Alert archive / California / Red Flag Warnings in 2024
Red Flag Warning 13, NWS Los Angeles, CA
NWS Los Angeles, CA issued this red flag warning at Dec 7, 2024, 2:36 PM PST for 4 counties in California. It took effect at Dec 9, 2024, 10:00 AM PST. It was in force for 51 hr. 33 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Dec 7, 2024, 2:36 PM PST (22:36 UTC)
- In effect from
- Dec 9, 2024, 10:00 AM PST
- Expired
- Dec 11, 2024, 1:09 PM PST
- In force
- 51 hr
- Issued by
- NWS Los Angeles, CA
Counties Los Angeles County, CA, San Luis Obispo County, CA, Santa Barbara County, CA, Ventura County, CA
The radar
The Los Angeles radar (KVTX), 35 km from the middle of the area, began a volume at 22:40 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Dec 9, 7:50 PM PST | NON-TSTM WND GST 59 | 7 Ese Acton, CA | Mesonet station 555SE N3 Highway (SCE). |
| Dec 9, 9:30 PM PST | NON-TSTM WND GST 76 | 8 S Agua Dulce, CA | Mesonet station SE678 Magic Mtn Truck Trl (SCE). |
| Dec 9, 9:41 PM PST | NON-TSTM WND GST 58 | 6 Ne Pyramid Lake, CA | ASOS station KSDB Sandberg. |
| Dec 9, 9:41 PM PST | NON-TSTM WND GST 58 | 6 Ne Pyramid Lake, CA | ASOS station KSDB Sandberg. |
| Dec 9, 9:50 PM PST | HIGH SUST WINDS 42 | 3 Ene Cayucos, CA | Mesonet station PG569 Whale Rock Rsvr (PGE). |
| Dec 9, 9:53 PM PST | NON-TSTM WND GST 59 | 8 Nne Mount Wilson, CA | Mesonet station CHOC1 Chilao RAWS. |
| Dec 9, 9:53 PM PST | NON-TSTM WND GST 61 | 8 Ese Castaic Lake, CA | Mesonet station WMSC1 Warm Springs RAWS. |
| Dec 9, 10:15 PM PST | NON-TSTM WND GST 69 | 6 E Point Mugu, CA | Mesonet station DW5145 Boney Mountain. |
| Dec 9, 10:20 PM PST | NON-TSTM WND GST 65 | 3 Nnw Chatsworth, CA | Mesonet station 470SE Palo Sola Truck Rd (SCE). |
| Dec 9, 10:40 PM PST | NON-TSTM WND GST 59 | 5 Nnw San Fernando, CA | Mesonet station 688SE Sombrero Rd (SCE). |
| Dec 9, 10:40 PM PST | NON-TSTM WND GST 93 | 8 S Agua Dulce, CA | Mesonet station SE678 Magic Mtn Truck Trl (SCE). |
| Dec 9, 10:50 PM PST | NON-TSTM WND GST 58 | 2 Nnw Ventura, CA | Mesonet station SE792 Crimea St Fire Rd (SCE). |
| Dec 9, 10:53 PM PST | NON-TSTM WND GST 62 | 8 Ese Castaic Lake, CA | Mesonet station WMSC1 Warm Springs RAWS. |
| Dec 9, 11:00 PM PST | HIGH SUST WINDS 45 | 4 Se Agua Dulce, CA | Mesonet station 804SE Sce Julians Ridge. |
| Dec 9, 11:00 PM PST | NON-TSTM WND GST 58 | 5 E Point Mugu, CA | Mesonet station 314SE Pacific View Dr (SCE). |
| Dec 9, 11:00 PM PST | NON-TSTM WND GST 73 | 6 E Point Mugu, CA | Mesonet station DW5145 Boney Mountain. |
| Dec 9, 11:15 PM PST | NON-TSTM WND GST 59 | 4 E Point Mugu, CA | Mesonet station FW0112 Deer Creek Canyon. |
| Dec 9, 11:30 PM PST | NON-TSTM WND GST 58 | 5 Nnw Altadena, CA | Mesonet station 148SE Clear Creek (SCE). |
| Dec 10, 12:10 AM PST | HIGH SUST WINDS 40 | 6 Ne Agua Dulce, CA | Mesonet station SE444 Sierra Pelona West (SCE). |
| Dec 10, 12:20 AM PST | NON-TSTM WND GST 77 | 3 Nnw Chatsworth, CA | Mesonet station 470SE Palo Sola Truck Rd (SCE). |
| Dec 10, 12:30 AM PST | NON-TSTM WND GST 58 | 4 N Moorpark, CA | Mesonet station 794SE Sce Moorpark Quarry. |
| Dec 10, 12:53 AM PST | NON-TSTM WND GST 62 | 8 Nne Mount Wilson, CA | Mesonet station CHOC1 Chilao RAWS. |
| Dec 10, 1:50 AM PST | NON-TSTM WND GST 68 | 4 Nne Chatsworth, CA | Mesonet station 777SE Limekiln Ridge (SCE). |
| Dec 10, 1:53 AM PST | NON-TSTM WND GST 63 | 8 Se Acton, CA | Mesonet station MLCC1 Mill Creek RAWS. |
| Dec 10, 2:00 AM PST | NON-TSTM WND GST 58 | 4 Se Agua Dulce, CA | Mesonet station 804SE Sce Julians Ridge. |
| Dec 10, 2:00 AM PST | NON-TSTM WND GST 59 | 4 Se Fillmore, CA | Mesonet station 788SE Sce Oak Ridge Canyon. |
| Dec 10, 2:20 AM PST | NON-TSTM WND GST 65 | 7 Ese Acton, CA | Mesonet station 555SE N3 Highway (SCE). |
| Dec 10, 2:20 AM PST | NON-TSTM WND GST 74 | 3 S Piru, CA | Mesonet station 803SE Sce Oakridge Oil Field. |
| Dec 10, 2:49 AM PST | NON-TSTM WND GST 60 | 3 Sw Piru, CA | Mesonet station WLYC1 Wiley Ridge RAWS. |
| Dec 10, 3:00 AM PST | NON-TSTM WND GST 58 | 6 Sw Thousand Oaks, CA | Mesonet station OOSC1 Sandstone Peak ALERT. |
| Dec 10, 3:00 AM PST | NON-TSTM WND GST 65 | 1 Nnw Chatsworth, CA | Mesonet station SE712 Browns Cyn (SCE). |
| Dec 10, 4:09 AM PST | NON-TSTM WND GST 62 | 5 Ne Point Mugu, CA | Mesonet station MLXC1 Miller Ranch. |
| Dec 10, 4:55 AM PST | NON-TSTM WND GST 64 | 5 Nne San Fernando, CA | Mesonet station CNIC1 Camp Nine RAWS. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Vandenberg AFB, CA (KVBG), launched 12:00Z, 10.6 hours before the alert went out and 95 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 3380 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- -26 m²/s²
- 0-3 km storm-relative helicity
- 19 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
344
WWUS86 KLOX 072236
RFWLOX
URGENT - FIRE WEATHER MESSAGE
National Weather Service Los Angeles/Oxnard CA
236 PM PST Sat Dec 7 2024
*** INCREASING POTENTIAL FOR HIGH END RED FLAG WARNING EVENT FOR
PORTIONS OF LOS ANGELES AND VENTURA COUNTIES ***
...RED FLAG WARNING IN EFFECT FOR LOS ANGELES AND VENTURA
COUNTY MOUNTAINS AND VALLEYS 10 AM MONDAY UNTIL 6 PM WEDNESDAY DUE
TO MODERATE TO STRONG SANTA ANA WINDS AND VERY LOW HUMIDITIES...
...RED FLAG WARNING IN EFFECT FOR VENTURA COUNTY COAST AND MALIBU
2 PM MONDAY UNTIL 2 PM WEDNESDAY DUE TO MODERATE TO STRONG SANTA
ANA WINDS AND VERY LOW HUMIDITIES...
...FIRE WEATHER WATCH IN EFFECT FOR SAN LUIS OBISPO COUNTY
MOUNTAINS 10 PM MONDAY UNTIL 10 PM TUESDAY DUE TO GUSTY SOUTHEAST
TO EAST WINDS AND VERY LOW HUMIDITIES...
.As surface high pressure builds into the Great Basin, Santa Ana
winds are expected to increase late Monday morning into
afternoon, then peak Monday night into Tuesday. Offshore winds
are expected to diminish some by Wednesday, but very dir will
persist. With the strong likelihood of widespread single digit
humidities with this event, confidence is increasing for a long
duration Red Flag event. In addition, there is the potential for a
high end Red Flag event across some of the windiest areas Monday
night through Tuesday, as localized wind gusts of 55 to 70 mph
could overlap with single digit humidities across the western San
Gabriels, Santa Susanas, western Santa Monicas, Ventura county
valleys, and the hills above Camarillo.
CAZ288-358-369>372-374-375-379-380-081830-
/O.UPG.KLOX.FW.A.0011.241209T1800Z-241212T0200Z/
/O.NEW.KLOX.FW.W.0013.241209T1800Z-241212T0200Z/
Santa Clarita Valley-Central Ventura County Valleys-
Western Santa Monica Mountains Recreational Area-
Eastern Santa Monica Mountains Recreational Area-
Calabasas and Agoura Hills-Western San Fernando Valley-
Southeastern Ventura County Valleys-Santa Susana Mountains-
Western San Gabriel Mountains and Highway 14 Corridor-
Eastern San Gabriel Mountains-
236 PM PST Sat Dec 7 2024
...RED FLAG WARNING IN EFFECT FROM 10 AM MONDAY TO 6 PM PST
WEDNESDAY FOR GUSTY SANTA ANA WINDS AND VERY LOW RELATIVE
HUMIDITY FOR THE VENTURA VALLEYS, SANTA CLARITA VALLEY, WESTERN
SAN FERNANDO VALLEY. SAN GABRIEL MOUNTAINS, SANTA MONICA
MOUNTAINS, SANTA SUSANA MOUNTAINS...
The National Weather Service in Los Angeles/Oxnard has issued a
Red Flag Warning for wind and low relative humidity, which is in
effect from 10 AM Monday to 6 PM PST Wednesday. The Fire Weather
Watch is no longer in effect.
* WINDS...Santa Ana winds expected to increase sharply late Monday
morning into afternoon, then peak Monday night into Tuesday.
when speeds of 25 to 40 mph with gusts of 35 to 55 mph will
likely be common. Isolated gusts as high as 55 to 70 mph will be
likely during the peak of the event in the windiest locations,
such as the western San Gabriels, Santa Susanas, western Santa
Monicas, Ventura county valleys, and hills above Camarillo.
Offshore winds are expected to diminish some on Wednesday, with
gusts mostly in the 20 to 40 mph range.
* RELATIVE HUMIDITY...Humidities are expected to lower to around
15 percent in many areas by Monday afternoon, with widespread
humidities of 5 to 10 percent likely from Monday night or
Tuesday, and persisting into Wednesday, with isolated readings
as low as 2 percent likely.
* IMPACTS...If fire ignition occurs, conditions are favorable for
very rapid fire spread, extreme fire behavior, and long range
spotting, which would threaten life and property. There is also
the risk of locally damaging winds including trees and power
lines.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will shortly. Use extreme caution
with anything that can spark a wildfire. Residents near wildland
interfaces should be prepared to evacuate if a wildfire breaks
out. See readyforwildfire.org and wildfirerisk.org for
information.
&&
$$
CAZ373-376>378-548-081830-
/O.UPG.KLOX.FW.A.0011.241209T1800Z-241212T0200Z/
/O.NEW.KLOX.FW.W.0013.241209T1800Z-241212T0200Z/
Eastern San Fernando Valley-Southern Ventura County Mountains-
Northern Ventura County Mountains-Interstate 5 Corridor-
Los Angeles County San Gabriel Valley-
236 PM PST Sat Dec 7 2024
...RED FLAG WARNING IN EFFECT FROM 10 AM MONDAY TO 6 PM PST
WEDNESDAY FOR GUSTY SANTA ANA WINDS AND VERY LOW RELATIVE
HUMIDITY FOR THE VENTURA COUNTY MOUNTAINS, INTERSTATE 5 CORRIDOR,
EASTERN SAN FERNANDO VALLEY, AND SAN GABRIEL VALLEY...
The National Weather Service in Los Angeles/Oxnard has issued a
Red Flag Warning for gusty Santa Ana winds and very low relative
humidity, which is in effect from 10 AM Monday to 6 PM PST
Wednesday. The Fire Weather Watch is no longer in effect.
* WINDS...Santa Ana winds expected to increase sharply late Monday
morning or afternoon, then peak Monday night into Tuesday, when
speeds of 20 to 30 mph with gusts of 35 to 50 mph will likely be
common. Offshore winds are expected to diminish some on
Wednesday, with gusts mostly in the 20 to 40 mph range.
* RELATIVE HUMIDITY...Humidities are expected to lower to around
15 percent in many areas by Monday afternoon, with widespread
humidities of 5 to 10 percent likely from Monday night or
Tuesday, and persisting into Wednesday, with isolated readings
as low as 2 percent likely.
* IMPACTS...If fire ignition occurs, conditions are favorable for
very rapid fire spread, extreme fire behavior, and long range
spotting, which would threaten life and property. There is also
the risk of locally damaging winds including trees and power
lines.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will shortly. Use extreme caution
with anything that can spark a wildfire. Residents near wildland
interfaces should be prepared to evacuate if a wildfire breaks
out. See readyforwildfire.org and wildfirerisk.org for
information.
&&
$$
CAZ354-355-362-081830-
/O.UPG.KLOX.FW.A.0011.241209T1800Z-241212T0200Z/
/O.NEW.KLOX.FW.W.0013.241209T2200Z-241211T2200Z/
Ventura County Beaches-Ventura County Inland Coast-Malibu Coast-
236 PM PST Sat Dec 7 2024
...RED FLAG WARNING IN EFFECT FROM 2 PM MONDAY TO 2 PM PST
WEDNESDAY FOR GUSTY SANTA ANA WINDS AND VERY LOW RELATIVE
HUMIDITY FOR THE VENTURA COASTAL PLAIN AND MALIBU COAST...
The National Weather Service in Los Angeles/Oxnard has issued a
Red Flag Warning for GUSTY Santa Ana winds and very low relative
humidity, which is in effect from 2 PM Monday to 2 PM PST
Wednesday. The Fire Weather Watch is no longer in effect.
* WINDS...Santa Ana winds expected to increase sharply by mid to
late Monday afternoon, then peak Monday night through Tuesday,
when speeds of 20 to 35 mph with gusts of 35 to 50 mph will
likely be common. Isolated gusts around 60 mph will be possible
in the hills above Camarillo and Somis.
* RELATIVE HUMIDITY...Humidities are expected to lower to around
15 percent in many areas by Monday afternoon, with widespread
humidities of 5 to 10 percent likely from Monday night or
Tuesday, and persisting into Wednesday, with isolated readings
as low as 2 percent likely.
* IMPACTS...If fire ignition occurs, conditions are favorable for
very rapid fire spread, extreme fire behavior, and long range
spotting, which would threaten life and property.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will shortly. Use extreme caution
with anything that can spark a wildfire. Residents near wildland
interfaces should be prepared to evacuate if a wildfire breaks
out. See readyforwildfire.org and wildfirerisk.org for
information.
&&
$$
CAZ345-081830-
/O.NEW.KLOX.FW.A.0012.241210T0600Z-241211T0600Z/
San Luis Obispo County Mountains-
236 PM PST Sat Dec 7 2024
...FIRE WEATHER WATCH IN EFFECT FROM MONDAY EVENING THROUGH
TUESDAY EVENING FOR GUSTY SOUTHEAST TO EAST WINDS AND VERY LOW
RELATIVE HUMIDITY FOR SAN LUIS OBISPO COUNTY MOUNTAINS...
The National Weather Service in Los Angeles/Oxnard has issued a
Fire Weather Watch for wind and low relative humidity, which is
in effect from Monday evening through Tuesday evening.
* WINDS...Southeast to east 15 to 30 mph with gusts to 40 mph.
* RELATIVE HUMIDITY...Widespread single digit humidities
developing by later Monday night or Tuesday.
* IMPACTS...If fire ignition occurs, conditions are favorable
for rapid fire spread and extreme fire behavior which would
threaten life and property.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Fire Weather Watch means that critical fire weather conditions
are likely to occur in the coming days. Residents near wildland
interfaces should prepare now on what to do if a wildfire breaks
out. See readyforwildfire.org and wildfirerisk.org for
information..
&&
$$
Gomberg9 follow-up statements
052 WWUS86 KLOX 081738 RFWLOX URGENT - FIRE WEATHER MESSAGE National Weather Service Los Angeles/Oxnard CA 938 AM PST Sun Dec 8 2024 ***INCREASING RISK FOR HIGH END RED FLAG WARNING EVENT WITH DANGEROUS FIRE WEATHER CONDITIONS FOR PORTIONS OF LOS ANGELES AND VENTURA COUNTIES DUE TO STRONG SANTA ANA WINDS, VERY LOW HUMIDITY, AND CRITICALLY DRY FUELS*** ...RED FLAG WARNING IN EFFECT FOR LOS ANGELES AND VENTURA COUNTY MOUNTAINS AND VALLEYS 10 AM MONDAY UNTIL 6 PM WEDNESDAY DUE TO STRONG SANTA ANA WINDS AND VERY LOW HUMIDITIES... ...RED FLAG WARNING IN EFFECT FOR VENTURA COUNTY COAST AND MALIBU 2 PM MONDAY UNTIL 2 PM WEDNESDAY DUE TO STRONG SANTA ANA WINDS AND VERY LOW HUMIDITIES... ...FIRE WEATHER WATCH IN EFFECT FOR SAN LUIS OBISPO COUNTY MOUNTAINS 10 PM MONDAY UNTIL 10 PM TUESDAY DUE TO GUSTY SOUTHEAST TO EAST WINDS AND VERY LOW HUMIDITIES... .DANGEROUS FIRE WEATHER EVENT BECOMING MORE LIKELY ACROSS PORTIONS OF LOS ANGELES AND VENTURA COUNTIES MONDAY INTO WEDNESDAY!!! As surface high pressure builds into the Great Basin, Santa Ana winds are expected to increase late Monday morning into afternoon, then peak Monday night into Tuesday. Offshore winds are expected to diminish some by Wednesday, but very dir will persist. With the strong likelihood of widespread single digit humidities with this event, confidence is increasing for a long duration Red Flag event. In addition, there is the increasing potential for a high end Red Flag event across some of the windiest areas Monday night through Tuesday, as damaging wind gusts of 60 to 80 mph could overlap with single digit humidities across many of the wind prone areas of Los Angeles and Ventura counties. With the threat of damaging wind gusts in these windier corridors, there will be an increased risk for downed trees and powerlines, along with power outages. During the peak of this event (Monday night into Tuesday), there will likely be strong offshore pressure gradients, strong cold air advection from the interior, and moderate upper level wind support. The hardest hit areas will likely be the San Gabriels, Santa Susanas, western Santa Monicas into Malibu, Ventura county valleys (especially Simi Valley and Moorpark), western San Fernando Valley (especially Highway 118/210 corridors from Porter Ranch to San Fernando), and the hills above Camarillo into east Ventura. Due to the expected long duration of dangerous fire weather conditions and critically dry fuels, there is the increasing potential for any new ignitions to have very rapid fire spread and extreme fire behavior (including long range spotting). As a result, there is the increasing threat for fire weather conditions to rival other historical fires in recent times including the Mountain and Thomas Fires. Dry offshore conditions will likely persist into Thursday. CAZ288-358-369>372-374-375-379-380-090045- /O.CON.KLOX.FW.W.0013.241209T1800Z-241212T0200Z/ Santa Clarita Valley-Central Ventura County Valleys- Western Santa Monica Mountains Recreational Area- Eastern Santa Monica Mountains Recreational Area- Calabasas and Agoura Hills-Western San Fernando Valley- Southeastern Ventura County Valleys-Santa Susana Mountains- Western San Gabriel Mountains and Highway 14 Corridor- Eastern San Gabriel Mountains- 938 AM PST Sun Dec 8 2024 ...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM MONDAY TO 6 PM PST WEDNESDAY FOR STRONG SANTA ANA WINDS AND VERY LOW RELATIVE HUMIDITY FOR THE VENTURA VALLEYS, SANTA CLARITA VALLEY, WESTERN SAN FERNANDO VALLEY. SAN GABRIEL MOUNTAINS, SANTA MONICA MOUNTAINS, SANTA SUSANA MOUNTAINS... * WINDS...Santa Ana winds expected to increase sharply late Monday morning into afternoon, then peak Monday night into Tuesday. when speeds of 25 to 45 mph with gusts of 40 to 60 mph common. Some of the windier corridor will potentially see damaging wind gusts in the 60 to 80 mph range during the peak of the event Monday night into Tuesday. Some of the highest wind areas will likely be the San Gabriels, Santa Susanas, western Santa Monicas into Malibu, Ventura county valleys (especially Simi Valley and Moorpark), and western San Fernando Valley (especially Highway 118/210 corridors from Porter Ranch to San Fernando). Offshore winds are expected to diminish some by Wednesday, with gusts mostly in the 20 to 40 mph range. * RELATIVE HUMIDITY...Humidities are expected to lower to around 15 percent in many areas by Monday afternoon or early evening, with widespread humidities of 5 to 10 percent likely later Monday evening into Tuesday, and persisting into Wednesday, with isolated readings as low as 2 percent likely. * IMPACTS...If fire ignition occurs, conditions are favorable for large fires with very rapid fire spread, extreme fire behavior, and long range spotting, which would threaten life and property. There is also the risk of damaging winds including trees and power lines, as well as power outages. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. Use extreme caution with anything that can spark a wildfire. Residents near wildland interfaces should be prepared to evacuate if a wildfire breaks out. See readyforwildfire.org and wildfirerisk.org for information. && $$ CAZ373-376>378-548-090045- /O.CON.KLOX.FW.W.0013.241209T1800Z-241212T0200Z/ Eastern San Fernando Valley-Southern Ventura County Mountains- Northern Ventura County Mountains-Interstate 5 Corridor- Los Angeles County San Gabriel Valley- 938 AM PST Sun Dec 8 2024 ...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM MONDAY TO 6 PM PST WEDNESDAY FOR GUSTY SANTA ANA WINDS AND VERY LOW RELATIVE HUMIDITY FOR THE VENTURA COUNTY MOUNTAINS, INTERSTATE 5 CORRIDOR, EASTERN SAN FERNANDO VALLEY, AND SAN GABRIEL VALLEY... * WINDS...Santa Ana winds expected to increase sharply late Monday morning or afternoon, then peak Monday night into Tuesday, when speeds of 20 to 30 mph with gusts of 35 to 55 mph will likely be common. Offshore winds are expected to diminish some on Wednesday, with gusts mostly in the 20 to 35 mph range. * RELATIVE HUMIDITY...Humidities are expected to lower to around 15 percent in many areas by Monday afternoon or early evening, with widespread humidities of 5 to 10 percent likely from late Monday evening into Tuesday, and persisting into Wednesday, with isolated readings as low as 2 percent likely. * IMPACTS...If fire ignition occurs, conditions are favorable for very rapid fire spread, extreme fire behavior, and long range spotting, which would threaten life and property. There is also the risk of locally damaging winds including trees and power lines. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. Use extreme caution with anything that can spark a wildfire. Residents near wildland interfaces should be prepared to evacuate if a wildfire breaks out. See readyforwildfire.org and wildfirerisk.org for information. && $$ CAZ354-355-362-090045- /O.CON.KLOX.FW.W.0013.241209T2200Z-241211T2200Z/ Ventura County Beaches-Ventura County Inland Coast-Malibu Coast- 938 AM PST Sun Dec 8 2024 ...RED FLAG WARNING REMAINS IN EFFECT FROM 2 PM MONDAY TO 2 PM PST WEDNESDAY FOR GUSTY SANTA ANA WINDS AND VERY LOW RELATIVE HUMIDITY FOR THE VENTURA COASTAL PLAIN AND MALIBU COAST... * WINDS...Santa Ana winds expected to increase sharply by mid to late Monday afternoon, then peak later Monday evening through Tuesday, when speeds of 25 to 40 mph with gusts of 35 to 55 mph will likely be common. Isolated damaging gusts of 55 to 65 mph will be possible in the hills above Camarillo and Somis extending into east Ventura, as well as Point Mugu. * RELATIVE HUMIDITY...Humidities are expected to lower to around 15 percent in many areas by late Monday afternoon or evening, with widespread humidities of 5 to 10 percent likely from late Monday evening into Tuesday, and persisting into Wednesday, with isolated readings as low as 2 percent likely. * IMPACTS...If fire ignition occurs, conditions are favorable for large fires with very rapid fire spread, extreme fire behavior, and long range spotting, which would threaten life and property. There is also the risk of damaging winds including trees and power lines, as well as power outages. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. Use extreme caution with anything that can spark a wildfire. Residents near wildland interfaces should be prepared to evacuate if a wildfire breaks out. See readyforwildfire.org and wildfirerisk.org for information. && $$ CAZ345-090045- /O.CON.KLOX.FW.A.0012.241210T0600Z-241211T0600Z/ San Luis Obispo County Mountains- 938 AM PST Sun Dec 8 2024 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM MONDAY EVENING THROUGH TUESDAY EVENING FOR GUSTY SOUTHEAST TO EAST WINDS AND VERY LOW RELATIVE HUMIDITY FOR SAN LUIS OBISPO COUNTY MOUNTAINS... * WINDS...Southeast to east 15 to 30 mph with gusts to 40 mph. * RELATIVE HUMIDITY...Widespread single digit humidities developing by later Monday night or Tuesday. * IMPACTS...If fire ignition occurs, conditions are favorable for rapid fire spread and extreme fire behavior which would threaten life and property. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Fire Weather Watch means that critical fire weather conditions are likely to occur in the coming days. Residents near wildland interfaces should prepare now on what to do if a wildfire breaks out. See readyforwildfire.org and wildfirerisk.org for information.. && $$ Gomberg
781 WWUS86 KLOX 082224 RFWLOX URGENT - FIRE WEATHER MESSAGE National Weather Service Los Angeles/Oxnard CA 224 PM PST Sun Dec 8 2024 ...PARTICULARLY DANGEROUS SITUATION (PDS) RED FLAG WARNING IN EFFECT FROM 10 PM MONDAY UNTIL 2 PM TUESDAY DUE TO DAMAGING SANTA ANA WINDS AND VERY LOW HUMIDITIES FOR THE FOLLOWING AREAS: SAN GABRIEL MOUNTAINS/ SANTA MONICA MOUNTAINS/ SANTA CLARITA VALLEY/ VENTURA COUNTY COASTS AND VALLEYS/ WESTERN SAN FERNANDO VALLEY -- AND RED FLAG WARNINGS IN EFFECT FOR ALL OTHER TIMES FROM 10 AM MONDAY UNTIL 6 PM WEDNESDAY IN THESE SAME AREAS... ...PARTICULARLY DANGEROUS SITUATION (PDS) RED FLAG WARNING IN EFFECT FROM 10 PM MONDAY UNTIL 10 AM WEDNESDAY DUE TO DAMAGING SANTA ANA WINDS AND VERY LOW HUMIDITIES FOR THE FOLLOWING AREAS: SANTA SUSANA MOUNTAINS-- AND RED FLAG WARNINGS IN EFFECT FOR ALL OTHER TIMES FROM 10 AM MONDAY UNTIL 6 PM WEDNESDAY IN THIS SAME AREA... ...PARTICULARLY DANGEROUS SITUATION (PDS) RED FLAG WARNING IN EFFECT FROM 10 PM MONDAY UNTIL 2 PM TUESDAY DUE TO DAMAGING SANTA ANA WINDS AND VERY LOW HUMIDITIES FOR THE FOLLOWING AREAS: VENTURA COASTAL PLAIN (ESPECIALLY FOOTHILLS)/ MALIBU COAST -- AND RED FLAG WARNINGS IN EFFECT FOR ALL OTHER TIMES FROM 2 PM MONDAY UNTIL 2 PM WEDNESDAY IN THESE SAME AREAS... ...RED FLAG WARNING IN EFFECT FROM 10 AM MONDAY UNTIL 6 PM WEDNESDAY FOR VENTURA MOUNTAINS, I5 CORRIDOR, EASTERN SAN FERNANDO VALLEY, AND SAN GABRIEL VALLEY DUE TO GUSTY SANTA ANA WINDS AND VERY LOW HUMIDITIES... ...RED FLAG WARNING IN EFFECT FROM 10 PM MONDAY UNTIL 10 PM TUESDAY FOR THE SAN LUIS OBISPO COUNTY MOUNTAINS DUE TO GUSTY EAST TO SOUTHEAST WINDS AND VERY LOW HUMIDITIES... ***THIS IS A PARTICULARLY DANGEROUS SITUATION (PDS) FOR MANY AREAS OF LOS ANGELES AND VENTURA COUNTIES *** A strong, widespread, and long duration Santa Ana event will bring widespread extremely critical fire weather conditions to many areas of Los Angeles and Ventura counties Monday into Wednesday. This will be a PARTICULAR DANGEROUS SITUATION (PDS) Red Flag Warning event in many areas, with the combination of a strong offshore pressure gradient (LAX-Daggett peaking at -8 to -9 mb), strong cold air advection, and moderate upper level wind support. As surface high pressure builds into the Great Basin, Santa Ana winds are expected to increase late Monday morning into afternoon, then peak Monday night into Tuesday. Offshore winds are expected to diminish some by Wednesday, but very dir will persist. With the strong likelihood of widespread single digit humidities with this event, there is high confidence for a long duration Red Flag event. In addition, there is high confidence of of PDS Red Flag Warning conditions late Monday evening through Tuesday, as damaging wind gusts of 60 to 80 mph could overlap with single digit humidities across many of the wind mountain and foothills areas, and with gusts of 40 to 65 mph across most wind prone coastal and valley areas of Los Angeles and Ventura counties. With the threat of damaging wind gusts in these windier corridors, there will be an increased risk for downed trees and powerlines, along with power outages. The hardest hit areas will likely be the San Gabriels, Santa Susanas, western Santa Monicas into Malibu, Ventura county valleys (especially Simi Valley and Moorpark), western San Fernando Valley (especially Highway 118/210 corridors from Porter Ranch to San Fernando), and the hills above Camarillo into east Ventura. Due to the expected long duration of dangerous fire weather conditions and critically dry fuels, there is the increasing potential for any new ignitions to have very rapid fire spread and extreme fire behavior (including long range spotting). As a result, there is the increasing threat for fire weather conditions to rival other historical fires in recent times including the Mountain and Thomas Fires. Dry offshore conditions will likely persist into Thursday. CAZ345-091900- /O.UPG.KLOX.FW.A.0012.241210T0600Z-241211T0600Z/ /O.EXB.KLOX.FW.W.0013.241210T0600Z-241211T0600Z/ San Luis Obispo County Mountains- 224 PM PST Sun Dec 8 2024 ...RED FLAG WARNING IN EFFECT FROM 10 PM MONDAY TO 10 PM PST TUESDAY FOR GUSTY SOUTHEAST TO EAST WINDS AND VERY LOW RELATIVE HUMIDITY FOR THE SAN LUIS OBISPO COUNTY MOUNTAINS... The National Weather Service in Los Angeles/Oxnard has issued a Red Flag Warning for gusty east to southeast winds and very low relative humidity, which is in effect from 10 PM Monday to 10 PM PST Tuesday. The Fire Weather Watch is no longer in effect. * WINDS...Southeast to east 15 to 30 mph with gusts to 40 mph. * RELATIVE HUMIDITY...Widespread single digit humidities developing by later Monday night or Tuesday. * IMPACTS...If fire ignition occurs, conditions are favorable for rapid fire spread and extreme fire behavior which would threaten life and property. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. Use extreme caution with anything that can spark a wildfire. Residents near wildland interfaces should be prepared to evacuate if a wildfire breaks out. See readyforwildfire.org and wildfirerisk.org for information. && $$ CAZ288-358-369>372-374-379-380-091900- /O.CON.KLOX.FW.W.0013.241209T1800Z-241212T0200Z/ Santa Clarita Valley-Central Ventura County Valleys- Western Santa Monica Mountains Recreational Area- Eastern Santa Monica Mountains Recreational Area- Calabasas and Agoura Hills-Western San Fernando Valley- Southeastern Ventura County Valleys- Western San Gabriel Mountains and Highway 14 Corridor- Eastern San Gabriel Mountains- 224 PM PST Sun Dec 8 2024 ...PARTICULARLY DANGEROUS SITUATION (PDS) RED FLAG WARNING IN EFFECT FROM 10 PM MONDAY UNTIL 2 PM TUESDAY DUE TO DAMAGING SANTA ANA WINDS AND VERY LOW HUMIDITIES FOR THE FOLLOWING AREAS: SAN GABRIEL MOUNTAINS/ SANTA MONICA MOUNTAINS/ SANTA CLARITA VALLEY/ VENTURA COUNTY COASTS AND VALLEYS/ WESTERN SAN FERNANDO VALLEY -- AND RED FLAG WARNINGS IN EFFECT FOR ALL OTHER TIMES FROM 10 AM MONDAY UNTIL 6 PM WEDNESDAY IN THESE SAME AREAS... * A particularly dangerous situation exists for these areas due to the combination of damaging winds, single digit humidities, and extremely dry vegetation. Any new fire ignitions in this area will have dangerous fire spread with a significant threat to life and property. * WINDS...Santa Ana winds expected to increase sharply late Monday morning into afternoon, then peak Monday night into Tuesday. when speeds of 25 to 40 mph with gusts of 40 to 65 mph common across coastal and valley areas Some of the windier foothills and mountains will likely see wind speeds of 30 to 50 mph with damaging wind gusts in the 60 to 80 mph range during the peak of the event Monday night into Tuesday. Some of the highest wind areas will likely be the San Gabriels, Santa Susanas, western Santa Monicas into Malibu, Ventura county valleys (especially Simi Valley and Moorpark), and western San Fernando Valley (especially Highway 118/210 corridors from Porter Ranch to San Fernando). Offshore winds are expected to diminish some by Wednesday, with gusts mostly in the 20 to 40 mph range, except locally higher in the Santa Susana mountains in the morning. * RELATIVE HUMIDITY...Humidities are expected to lower to around 15 percent in many areas by Monday afternoon or early evening, with widespread humidities of 5 to 10 percent likely later Monday evening into Tuesday, and persisting into Wednesday, with isolated readings as low as 2 percent likely. * IMPACTS...If fire ignition occurs, conditions are favorable for large fires with very rapid fire spread, extreme fire behavior, and long range spotting, which would threaten life and property. There is also the risk of damaging winds including downed trees and power lines, as well as power outages. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. Use extreme caution with anything that can spark a wildfire. Residents near wildland interfaces should be prepared to evacuate if a wildfire breaks out. See readyforwildfire.org and wildfirerisk.org for information. && $$ CAZ375-091900- /O.CON.KLOX.FW.W.0013.241209T1800Z-241212T0200Z/ Santa Susana Mountains- 224 PM PST Sun Dec 8 2024 ...PARTICULARLY DANGEROUS SITUATION (PDS) RED FLAG WARNING IN EFFECT FROM 10 PM MONDAY UNTIL 10 AM WEDNESDAY DUE TO DAMAGING SANTA ANA WINDS AND VERY LOW HUMIDITIES FOR THE FOLLOWING AREAS: SANTA SUSANA MOUNTAINS-- AND RED FLAG WARNINGS IN EFFECT FOR ALL OTHER TIMES FROM 10 AM MONDAY UNTIL 6 PM WEDNESDAY IN THIS SAME AREA... * A particularly dangerous situation exists for this area due to the combination of damaging winds, single digit humidities, and extremely dry vegetation. Any new fire ignitions in this area will have dangerous fire spread with a significant threat to life and property. * WINDS...Santa Ana winds expected to increase sharply late Monday morning into afternoon, then peak Monday night into early Wednesday morning. when speeds of 30 to 50 mph with gusts of 65 to 80 mph are likely. Offshore winds are expected to diminish some by late Wednesday morning, with gusts mostly in the 20 to 40 mph range. * RELATIVE HUMIDITY...Humidities are expected to lower to around 15 percent by Monday afternoon or early evening, with widespread humidities of 5 to 10 percent likely later Monday evening into Tuesday, and persisting into Wednesday, with isolated readings as low as 2 percent likely. * IMPACTS...If fire ignition occurs, conditions are favorable for large fires with very rapid fire spread, extreme fire behavior, and long range spotting, which would threaten life and property. There is also the risk of damaging winds including trees and power lines, as well as power outages. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. Use extreme caution with anything that can spark a wildfire. Residents near wildland interfaces should be prepared to evacuate if a wildfire breaks out. See readyforwildfire.org and wildfirerisk.org for information. && $$ CAZ354-355-362-091900- /O.CON.KLOX.FW.W.0013.241209T2200Z-241211T2200Z/ Ventura County Beaches-Ventura County Inland Coast-Malibu Coast- 224 PM PST Sun Dec 8 2024 ...PARTICULARLY DANGEROUS SITUATION (PDS) RED FLAG WARNING IN EFFECT FROM 10 PM MONDAY UNTIL 2 PM TUESDAY DUE TO DAMAGING SANTA ANA WINDS AND VERY LOW HUMIDITIES FOR THE FOLLOWING AREAS: VENTURA COASTAL PLAIN (ESPECIALLY FOOTHILLS)/ MALIBU COAST -- AND RED FLAG WARNINGS IN EFFECT FOR ALL OTHER TIMES FROM 2 PM MONDAY UNTIL 2 PM WEDNESDAY IN THESE SAME AREAS... * A particularly dangerous situation exists for these areas due to the combination of damaging winds, single digit humidities, and extremely dry vegetation. Any new fire ignitions in this area will have dangerous fire spread with a significant threat to life and property. * WINDS...Santa Ana winds expected to increase sharply by mid to late Monday afternoon, then peak later Monday evening through Tuesday, when speeds of 25 to 40 mph with gusts of 40 to 55 mph will likely be common. Isolated damaging gusts of 55 to 65 mph will be possible in the hills above Camarillo and Somis extending into east Ventura, as well as Point Mugu and Malibu. * RELATIVE HUMIDITY...Humidities are expected to lower to around 15 percent in many areas by late Monday afternoon or evening, with widespread humidities of 5 to 10 percent likely from late Monday evening into Tuesday, and persisting into Wednesday, with isolated readings as low as 2 percent likely. * IMPACTS...If fire ignition occurs, conditions are favorable for large fires with very rapid fire spread, extreme fire behavior, and long range spotting, which would threaten life and property. There is also the risk of damaging winds including trees and power lines, as well as power outages. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. Use extreme caution with anything that can spark a wildfire. Residents near wildland interfaces should be prepared to evacuate if a wildfire breaks out. See readyforwildfire.org and wildfirerisk.org for information. && $$ CAZ373-376>378-548-091900- /O.CON.KLOX.FW.W.0013.241209T1800Z-241212T0200Z/ Eastern San Fernando Valley-Southern Ventura County Mountains- Northern Ventura County Mountains-Interstate 5 Corridor- Los Angeles County San Gabriel Valley- 224 PM PST Sun Dec 8 2024 ...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM MONDAY TO 6 PM PST WEDNESDAY FOR GUSTY SANTA ANA WINDS AND VERY LOW RELATIVE HUMIDITY FOR THE VENTURA COUNTY MOUNTAINS, INTERSTATE 5 CORRIDOR, EASTERN SAN FERNANDO VALLEY, AND SAN GABRIEL VALLEY... * WINDS...Santa Ana winds expected to increase sharply late Monday morning or afternoon, then peak Monday night into Tuesday, when speeds of 20 to 30 mph with gusts of 35 to 55 mph will likely be common. Offshore winds are expected to diminish some on Wednesday, with gusts mostly in the 20 to 35 mph range. * RELATIVE HUMIDITY...Humidities are expected to lower to around 15 percent in many areas by Monday afternoon or early evening, with widespread humidities of 5 to 10 percent likely from late Monday evening into Tuesday, and persisting into Wednesday, with isolated readings as low as 2 percent likely. * IMPACTS...If fire ignition occurs, conditions are favorable for very rapid fire spread, extreme fire behavior, and long range spotting, which would threaten life and property. There is also the risk of locally damaging winds including trees and power lines. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. Use extreme caution with anything that can spark a wildfire. Residents near wildland interfaces should be prepared to evacuate if a wildfire breaks out. See readyforwildfire.org and wildfirerisk.org for information. && $$ Gomberg
605 WWUS86 KLOX 090004 RFWLOX URGENT - FIRE WEATHER MESSAGE National Weather Service Los Angeles/Oxnard CA 404 PM PST Sun Dec 8 2024 ...PARTICULARLY DANGEROUS SITUATION (PDS) RED FLAG WARNING IN EFFECT FROM 10 PM MONDAY UNTIL 2 PM TUESDAY DUE TO DAMAGING SANTA ANA WINDS AND VERY LOW HUMIDITIES FOR THE FOLLOWING AREAS: SAN GABRIEL MOUNTAINS/ SANTA MONICA MOUNTAINS/ SANTA CLARITA VALLEY/ VENTURA COUNTY COASTS AND VALLEYS/ WESTERN SAN FERNANDO VALLEY -- AND RED FLAG WARNINGS IN EFFECT FOR ALL OTHER TIMES FROM 10 AM MONDAY UNTIL 6 PM WEDNESDAY IN THESE SAME AREAS... ...PARTICULARLY DANGEROUS SITUATION (PDS) RED FLAG WARNING IN EFFECT FROM 10 PM MONDAY UNTIL 10 AM WEDNESDAY DUE TO DAMAGING SANTA ANA WINDS AND VERY LOW HUMIDITIES FOR THE FOLLOWING AREAS: SANTA SUSANA MOUNTAINS-- AND RED FLAG WARNINGS IN EFFECT FOR ALL OTHER TIMES FROM 10 AM MONDAY UNTIL 6 PM WEDNESDAY IN THIS SAME AREA... ...PARTICULARLY DANGEROUS SITUATION (PDS) RED FLAG WARNING IN EFFECT FROM 10 PM MONDAY UNTIL 2 PM TUESDAY DUE TO DAMAGING SANTA ANA WINDS AND VERY LOW HUMIDITIES FOR THE FOLLOWING AREAS: VENTURA COASTAL PLAIN (ESPECIALLY FOOTHILLS)/ MALIBU COAST -- AND RED FLAG WARNINGS IN EFFECT FOR ALL OTHER TIMES FROM 2 PM MONDAY UNTIL 2 PM WEDNESDAY IN THESE SAME AREAS... ...RED FLAG WARNING IN EFFECT FROM 10 AM MONDAY UNTIL 6 PM WEDNESDAY FOR VENTURA MOUNTAINS, I5 CORRIDOR, EASTERN SAN FERNANDO VALLEY, AND SAN GABRIEL VALLEY DUE TO GUSTY SANTA ANA WINDS AND VERY LOW HUMIDITIES... ...RED FLAG WARNING IN EFFECT FROM 10 PM MONDAY UNTIL 10 PM TUESDAY FOR THE SAN LUIS OBISPO COUNTY MOUNTAINS DUE TO GUSTY EAST TO SOUTHEAST WINDS AND VERY LOW HUMIDITIES... ***THIS IS A PARTICULARLY DANGEROUS SITUATION (PDS) FOR MANY AREAS OF LOS ANGELES AND VENTURA COUNTIES *** A strong, widespread, and long duration Santa Ana event will bring widespread critical to extremely critical fire weather conditions to many areas of Los Angeles and Ventura counties Monday into Wednesday. This will be a PARTICULAR DANGEROUS SITUATION (PDS) Red Flag Warning event in many areas, with the combination of a strong offshore pressure gradient (LAX-Daggett peaking at -8 to -9 mb), strong cold air advection, and moderate upper level wind support. As surface high pressure builds into the Great Basin, Santa Ana winds are expected to increase late Monday morning into afternoon, then peak Monday night into Tuesday. Offshore winds are expected to diminish some by Wednesday, but very dir will persist. With the strong likelihood of widespread single digit humidities with this event, there is high confidence for a long duration Red Flag event. In addition, there is high confidence of of PDS Red Flag Warning conditions late Monday evening through Tuesday, as damaging wind gusts of 60 to 80 mph will likely overlap with single digit humidities across many of the windier mountain and foothills areas, and with gusts of 40 to 65 mph across most wind prone coastal and valley areas of Los Angeles and Ventura counties. With the threat of damaging wind gusts in these windier corridors, there will be an increased risk for downed trees and powerlines, along with power outages. The hardest hit areas will likely be the San Gabriels, Santa Susanas, western Santa Monicas into Malibu, Ventura county valleys (especially Simi Valley and Moorpark), western San Fernando Valley (especially Highway 118/210 corridors from Porter Ranch to San Fernando), and the hills above Camarillo into east Ventura. Due to the expected long duration of dangerous fire weather conditions and critically dry fuels, there is the increasing potential for any new ignitions to have very rapid fire spread and extreme fire behavior (including long range spotting). As a result, there is the increasing threat for fire weather conditions to rival other historical fires in recent times including the Mountain and Thomas Fires. Dry offshore conditions will likely persist into Thursday. CAZ288-358-369>372-374-379-380-091900- /O.CON.KLOX.FW.W.0013.241209T1800Z-241212T0200Z/ Santa Clarita Valley-Central Ventura County Valleys- Western Santa Monica Mountains Recreational Area- Eastern Santa Monica Mountains Recreational Area- Calabasas and Agoura Hills-Western San Fernando Valley- Southeastern Ventura County Valleys- Western San Gabriel Mountains and Highway 14 Corridor- Eastern San Gabriel Mountains- 404 PM PST Sun Dec 8 2024 ...PARTICULARLY DANGEROUS SITUATION (PDS) RED FLAG WARNING IN EFFECT FROM 10 PM MONDAY UNTIL 2 PM TUESDAY DUE TO DAMAGING SANTA ANA WINDS AND VERY LOW HUMIDITIES FOR THE FOLLOWING AREAS: SAN GABRIEL MOUNTAINS/ SANTA MONICA MOUNTAINS/ SANTA CLARITA VALLEY/ VENTURA COUNTY COASTS AND VALLEYS/ WESTERN SAN FERNANDO VALLEY -- AND RED FLAG WARNINGS IN EFFECT FOR ALL OTHER TIMES FROM 10 AM MONDAY UNTIL 6 PM WEDNESDAY IN THESE SAME AREAS... * A particularly dangerous situation exists for these areas due to the combination of damaging winds, single digit humidities, and extremely dry vegetation. Any new fire ignitions in this area will have dangerous fire spread with a significant threat to life and property. * WINDS...Santa Ana winds expected to increase sharply late Monday morning into afternoon, then peak Monday night into Tuesday. when speeds of 25 to 40 mph with gusts of 40 to 65 mph common across coastal and valley areas. Some of the windier foothills and mountains will likely see wind speeds of 30 to 50 mph with damaging wind gusts in the 60 to 80 mph range during the peak of the event Monday night into Tuesday. Some of the highest wind areas will likely be the San Gabriels, Santa Susanas, western Santa Monicas into Malibu, Ventura county valleys (especially Simi Valley and Moorpark), and western San Fernando Valley (especially Highway 118/210 corridors from Porter Ranch to San Fernando). Offshore winds are expected to diminish some by Wednesday. * RELATIVE HUMIDITY...Humidities are expected to lower to around 15 percent in many areas by Monday afternoon or early evening, with widespread humidities of 5 to 10 percent likely later Monday evening into Tuesday, and persisting into Wednesday, with isolated readings as low as 2 percent likely. * IMPACTS...If fire ignition occurs, conditions are favorable for large fires with very rapid fire spread, extreme fire behavior, and long range spotting, which would threaten life and property. There is also the risk of damaging winds including downed trees and power lines, as well as power outages. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. Use extreme caution with anything that can spark a wildfire. Residents near wildland interfaces should be prepared to evacuate if a wildfire breaks out. See readyforwildfire.org and wildfirerisk.org for information. && $$ CAZ375-091900- /O.CON.KLOX.FW.W.0013.241209T1800Z-241212T0200Z/ Santa Susana Mountains- 404 PM PST Sun Dec 8 2024 ...PARTICULARLY DANGEROUS SITUATION (PDS) RED FLAG WARNING IN EFFECT FROM 10 PM MONDAY UNTIL 10 AM WEDNESDAY DUE TO DAMAGING SANTA ANA WINDS AND VERY LOW HUMIDITIES FOR THE FOLLOWING AREAS: SANTA SUSANA MOUNTAINS-- AND RED FLAG WARNINGS IN EFFECT FOR ALL OTHER TIMES FROM 10 AM MONDAY UNTIL 6 PM WEDNESDAY IN THIS SAME AREA... * A particularly dangerous situation exists for this area due to the combination of damaging winds, single digit humidities, and extremely dry vegetation. Any new fire ignitions in this area will have dangerous fire spread with a significant threat to life and property. * WINDS...Santa Ana winds expected to increase sharply late Monday morning into afternoon, then peak Monday night into early Wednesday morning. when speeds of 30 to 50 mph with gusts of 65 to 80 mph are likely. Offshore winds are expected to diminish some by late Wednesday morning, with gusts mostly in the 20 to 40 mph range. * RELATIVE HUMIDITY...Humidities are expected to lower to around 15 percent by Monday afternoon or early evening, with widespread humidities of 5 to 10 percent likely later Monday evening into Tuesday, and persisting into Wednesday, with isolated readings as low as 2 percent likely. * IMPACTS...If fire ignition occurs, conditions are favorable for large fires with very rapid fire spread, extreme fire behavior, and long range spotting, which would threaten life and property. There is also the risk of damaging winds including trees and power lines, as well as power outages. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. Use extreme caution with anything that can spark a wildfire. Residents near wildland interfaces should be prepared to evacuate if a wildfire breaks out. See readyforwildfire.org and wildfirerisk.org for information. && $$ CAZ354-355-362-091900- /O.CON.KLOX.FW.W.0013.241209T2200Z-241211T2200Z/ Ventura County Beaches-Ventura County Inland Coast-Malibu Coast- 404 PM PST Sun Dec 8 2024 ...PARTICULARLY DANGEROUS SITUATION (PDS) RED FLAG WARNING IN EFFECT FROM 10 PM MONDAY UNTIL 2 PM TUESDAY DUE TO DAMAGING SANTA ANA WINDS AND VERY LOW HUMIDITIES FOR THE FOLLOWING AREAS: VENTURA COASTAL PLAIN (ESPECIALLY FOOTHILLS)/ MALIBU COAST -- AND RED FLAG WARNINGS IN EFFECT FOR ALL OTHER TIMES FROM 2 PM MONDAY UNTIL 2 PM WEDNESDAY IN THESE SAME AREAS... * A particularly dangerous situation exists for these areas due to the combination of damaging winds, single digit humidities, and extremely dry vegetation. Any new fire ignitions in this area will have dangerous fire spread with a significant threat to life and property. * WINDS...Santa Ana winds expected to increase sharply by mid to late Monday afternoon, then peak later Monday evening through Tuesday, when speeds of 25 to 40 mph with gusts of 40 to 55 mph will likely be common. Isolated damaging gusts of 55 to 65 mph will be possible in the hills above Camarillo and Somis extending into east Ventura, as well as Point Mugu and Malibu. * RELATIVE HUMIDITY...Humidities are expected to lower to around 15 percent in many areas by late Monday afternoon or evening, with widespread humidities of 5 to 10 percent likely from late Monday evening into Tuesday, and persisting into Wednesday, with isolated readings as low as 2 percent likely. * IMPACTS...If fire ignition occurs, conditions are favorable for large fires with very rapid fire spread, extreme fire behavior, and long range spotting, which would threaten life and property. There is also the risk of damaging winds including trees and power lines, as well as power outages. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. Use extreme caution with anything that can spark a wildfire. Residents near wildland interfaces should be prepared to evacuate if a wildfire breaks out. See readyforwildfire.org and wildfirerisk.org for information. && $$ CAZ373-376>378-548-091900- /O.CON.KLOX.FW.W.0013.241209T1800Z-241212T0200Z/ Eastern San Fernando Valley-Southern Ventura County Mountains- Northern Ventura County Mountains-Interstate 5 Corridor- Los Angeles County San Gabriel Valley- 404 PM PST Sun Dec 8 2024 ...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM MONDAY TO 6 PM PST WEDNESDAY FOR GUSTY SANTA ANA WINDS AND VERY LOW RELATIVE HUMIDITY FOR THE VENTURA COUNTY MOUNTAINS, INTERSTATE 5 CORRIDOR, EASTERN SAN FERNANDO VALLEY, AND SAN GABRIEL VALLEY... * WINDS...Santa Ana winds expected to increase sharply late Monday morning or afternoon, then peak Monday night into Tuesday, when speeds of 20 to 30 mph with gusts of 35 to 55 mph will likely be common. Offshore winds are expected to diminish some on Wednesday, with gusts mostly in the 20 to 35 mph range. * RELATIVE HUMIDITY...Humidities are expected to lower to around 15 percent in many areas by Monday afternoon or early evening, with widespread humidities of 5 to 10 percent likely from late Monday evening into Tuesday, and persisting into Wednesday, with isolated readings as low as 2 percent likely. * IMPACTS...If fire ignition occurs, conditions are favorable for very rapid fire spread, extreme fire behavior, and long range spotting, which would threaten life and property. There is also the risk of locally damaging winds including trees and power lines. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. Use extreme caution with anything that can spark a wildfire. Residents near wildland interfaces should be prepared to evacuate if a wildfire breaks out. See readyforwildfire.org and wildfirerisk.org for information. && $$ CAZ345-091900- /O.CON.KLOX.FW.W.0013.241210T0600Z-241211T0600Z/ San Luis Obispo County Mountains- 404 PM PST Sun Dec 8 2024 ...RED FLAG WARNING REMAINS IN EFFECT FROM 10 PM MONDAY TO 10 PM PST TUESDAY FOR GUSTY SOUTHEAST TO EAST WINDS AND VERY LOW RELATIVE HUMIDITY FOR THE SAN LUIS OBISPO COUNTY MOUNTAINS... * WINDS...Southeast to east 15 to 30 mph with gusts to 40 mph. * RELATIVE HUMIDITY...Widespread single digit humidities developing by later Monday night or Tuesday. * IMPACTS...If fire ignition occurs, conditions are favorable for rapid fire spread and extreme fire behavior which would threaten life and property. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. Use extreme caution with anything that can spark a wildfire. Residents near wildland interfaces should be prepared to evacuate if a wildfire breaks out. See readyforwildfire.org and wildfirerisk.org for information. && $$ Gomberg
245 WWUS86 KLOX 091743 RFWLOX URGENT - FIRE WEATHER MESSAGE National Weather Service Los Angeles/Oxnard CA 943 AM PST Mon Dec 9 2024 ...PARTICULARLY DANGEROUS SITUATION (PDS) RED FLAG WARNING IN EFFECT FROM 10 PM TONIGHT UNTIL 2 PM TUESDAY DUE TO DAMAGING SANTA ANA WINDS AND VERY LOW HUMIDITIES FOR THE FOLLOWING AREAS: SAN GABRIEL MOUNTAINS/ SANTA MONICA MOUNTAINS/ SANTA CLARITA VALLEY/ VENTURA COUNTY COASTS AND VALLEYS/ WESTERN SAN FERNANDO VALLEY -- AND RED FLAG WARNINGS IN EFFECT FOR ALL OTHER TIMES UNTIL 6 PM WEDNESDAY IN THESE SAME AREAS... ...PARTICULARLY DANGEROUS SITUATION (PDS) RED FLAG WARNING IN EFFECT FROM 10 PM TONIGHT UNTIL 10 AM WEDNESDAY DUE TO DAMAGING SANTA ANA WINDS AND VERY LOW HUMIDITIES FOR THE FOLLOWING AREAS: SANTA SUSANA MOUNTAINS-- AND RED FLAG WARNINGS IN EFFECT FOR ALL OTHER TIMES UNTIL 6 PM WEDNESDAY IN THIS SAME AREA... ...PARTICULARLY DANGEROUS SITUATION (PDS) RED FLAG WARNING IN EFFECT FROM 10 PM TONIGHT UNTIL 2 PM TUESDAY DUE TO DAMAGING SANTA ANA WINDS AND VERY LOW HUMIDITIES FOR THE FOLLOWING AREAS: VENTURA COASTAL PLAIN (ESPECIALLY FOOTHILLS)/ MALIBU COAST -- AND RED FLAG WARNINGS IN EFFECT FOR ALL OTHER TIMES FROM 2 PM MONDAY UNTIL 2 PM WEDNESDAY IN THESE SAME AREAS... ...RED FLAG WARNING IN EFFECT FROM 10 AM TODAY UNTIL 6 PM WEDNESDAY FOR VENTURA MOUNTAINS, I5 CORRIDOR, EASTERN SAN FERNANDO VALLEY, AND SAN GABRIEL VALLEY DUE TO GUSTY SANTA ANA WINDS AND VERY LOW HUMIDITIES... ...RED FLAG WARNING IN EFFECT FROM 10 PM TONIGHT UNTIL 10 PM TUESDAY FOR THE SAN LUIS OBISPO COUNTY MOUNTAINS DUE TO GUSTY EAST TO SOUTHEAST WINDS AND VERY LOW HUMIDITIES... ...RED FLAG WARNING IN EFFECT FROM 8 PM TONIGHT UNTIL 2 PM TUESDAY FOR THE CHANNEL ISLANDS DUE TO GUSTY SANTA ANA WINDS AND VERY LOW HUMIDITIES... ***THIS IS A PARTICULARLY DANGEROUS SITUATION (PDS) FOR MANY AREAS OF LOS ANGELES AND VENTURA COUNTIES *** A strong, widespread, and long duration Santa Ana event will bring widespread critical to extremely critical fire weather conditions to many areas of Los Angeles and Ventura counties today into Wednesday. This will be a PARTICULAR DANGEROUS SITUATION (PDS) Red Flag Warning event in many areas, with the combination of a strong offshore pressure gradient (LAX-Daggett peaking at -8 to -9 mb), strong cold air advection, and moderate upper level wind support. As surface high pressure builds into the Great Basin, Santa Ana winds are expected to increase late this morning into afternoon, then peak tonight into Tuesday. A marine layer cloud presence this morning may delay the onset of offshore winds across portions of the coast and coastal valleys by a few hours from what was expected yesterday. Offshore winds are expected to diminish some by Wednesday, but very dir will persist. With the strong likelihood of widespread single digit humidities with this event, there is high confidence for a long duration Red Flag event. In addition, there is high confidence of of PDS Red Flag Warning conditions late Monday evening through Tuesday, as damaging wind gusts of 60 to 80 mph will likely overlap with single digit humidities across many of the windier mountain and foothill areas, and with gusts of 40 to 65 mph across most wind prone coastal and valley areas of Los Angeles and Ventura counties. With the threat of damaging wind gusts in these windier corridors, there will be an increased risk for downed trees and powerlines, along with power outages. The hardest hit areas will likely be the San Gabriels, Santa Susanas, western Santa Monicas into Malibu, Ventura county valleys (especially Simi Valley and Moorpark), western San Fernando Valley (especially Highway 118/210 corridors from Porter Ranch to San Fernando), and the hills above Camarillo into east Ventura. Due to the expected long duration of dangerous fire weather conditions and critically dry fuels, there is the increasing potential for any new ignitions to have very rapid fire spread and extreme fire behavior (including long range spotting). As a result, there is the increasing threat for fire weather conditions to rival other historical fires in recent times including the Mountain and Thomas Fires. Dry offshore conditions will likely persist into Thursday morning. CAZ549-550-101900- /O.EXB.KLOX.FW.W.0013.241210T0400Z-241210T2200Z/ San Miguel and Santa Rosa Islands-Santa Cruz and Anacapa Islands- 943 AM PST Mon Dec 9 2024 ...RED FLAG WARNING IN EFFECT FROM 8 PM THIS EVENING TO 2 PM PST TUESDAY FOR GUSTY SANTA ANA WINDS AND VERY LOW RELATIVE HUMIDITY FOR THE CHANNEL ISLANDS... The National Weather Service in Los Angeles/Oxnard has issued a Red Flag Warning for gusty Santa Ana winds and very low relative humidity, which is in effect from 8 PM this evening to 2 PM PST Tuesday. * WINDS...Santa Ana winds expected to increase sharply this evening and persist through early Tuesday afternoon. During the peak of the event, wind speeds of 25 to 35 mph with gusts of 45 to 60 mph can be expected, with the strongest winds focused across higher terrain. * RELATIVE HUMIDITY...Humidities are expected to lower to around 15 percent in many areas by this evening, with widespread humidities of 5 to 10 percent likely by Tuesday. * IMPACTS...If fire ignition occurs, conditions are favorable for large fires with very rapid fire spread, extreme fire behavior, and long range spotting, which would threaten life and property. There is also the risk of damaging winds including downed trees and power lines, as well as power outages. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. Use extreme caution with anything that can spark a wildfire. Residents near wildland interfaces should be prepared to evacuate if a wildfire breaks out. See readyforwildfire.org and wildfirerisk.org for information. && $$ CAZ288-358-369>372-374-379-380-101900- /O.CON.KLOX.FW.W.0013.241209T1800Z-241212T0200Z/ Santa Clarita Valley-Central Ventura County Valleys- Western Santa Monica Mountains Recreational Area- Eastern Santa Monica Mountains Recreational Area- Calabasas and Agoura Hills-Western San Fernando Valley- Southeastern Ventura County Valleys- Western San Gabriel Mountains and Highway 14 Corridor- Eastern San Gabriel Mountains- 943 AM PST Mon Dec 9 2024 ...PARTICULARLY DANGEROUS SITUATION (PDS) RED FLAG WARNING IN EFFECT FROM 10 PM TONIGHT UNTIL 2 PM TUESDAY DUE TO DAMAGING SANTA ANA WINDS AND VERY LOW HUMIDITIES FOR THE FOLLOWING AREAS: SAN GABRIEL MOUNTAINS/ SANTA MONICA MOUNTAINS/ SANTA CLARITA VALLEY/ VENTURA COUNTY COASTS AND VALLEYS/ WESTERN SAN FERNANDO VALLEY -- AND RED FLAG WARNINGS IN EFFECT FOR ALL OTHER TIMES UNTIL 6 PM WEDNESDAY IN THESE SAME AREAS... * WINDS...Santa Ana winds expected to increase sharply later this morning into afternoon, then peak tonight into Tuesday. when speeds of 25 to 40 mph with gusts of 40 to 65 mph common across coastal and valley areas. Some of the windier foothills and mountains will likely see wind speeds of 30 to 50 mph with damaging wind gusts in the 60 to 80 mph range during the peak of the event tonight into Tuesday. Some of the highest wind areas will likely be the San Gabriels, Santa Susanas, western Santa Monicas into Malibu, Ventura county valleys (especially Simi Valley and Moorpark), and western San Fernando Valley (especially Highway 118/210 corridors from Porter Ranch to San Fernando). Offshore winds are expected to diminish some by Wednesday. * RELATIVE HUMIDITY...Humidities are expected to lower to around 15 percent in many areas by this afternoon or early evening, with widespread humidities of 5 to 10 percent likely later this evening into Tuesday, and persisting into Wednesday, with isolated readings as low as 2 percent likely. * IMPACTS...If fire ignition occurs, conditions are favorable for large fires with very rapid fire spread, extreme fire behavior, and long range spotting, which would threaten life and property. There is also the risk of damaging winds including downed trees and power lines, as well as power outages. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. Use extreme caution with anything that can spark a wildfire. Residents near wildland interfaces should be prepared to evacuate if a wildfire breaks out. See readyforwildfire.org and wildfirerisk.org for information. && $$ CAZ375-101900- /O.CON.KLOX.FW.W.0013.241209T1800Z-241212T0200Z/ Santa Susana Mountains- 943 AM PST Mon Dec 9 2024 ...PARTICULARLY DANGEROUS SITUATION (PDS) RED FLAG WARNING IN EFFECT FROM 10 PM TONIGHT UNTIL 10 AM WEDNESDAY DUE TO DAMAGING SANTA ANA WINDS AND VERY LOW HUMIDITIES FOR THE FOLLOWING AREAS: SANTA SUSANA MOUNTAINS-- AND RED FLAG WARNINGS IN EFFECT FOR ALL OTHER TIMES UNTIL 6 PM WEDNESDAY IN THIS SAME AREA... * WINDS...Santa Ana winds expected to increase sharply late later this morning into afternoon, then peak tonight into early Wednesday morning. when speeds of 30 to 50 mph with gusts of 65 to 80 mph are likely. Offshore winds are expected to diminish some by late Wednesday morning, with gusts mostly in the 20 to 40 mph range. * RELATIVE HUMIDITY...Humidities are expected to lower to around 15 percent by this afternoon or early evening, with widespread humidities of 5 to 10 percent likely later this evening into Tuesday, and persisting into Wednesday, with isolated readings as low as 2 percent likely. * IMPACTS...If fire ignition occurs, conditions are favorable for large fires with very rapid fire spread, extreme fire behavior, and long range spotting, which would threaten life and property. There is also the risk of damaging winds including trees and power lines, as well as power outages. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. Use extreme caution with anything that can spark a wildfire. Residents near wildland interfaces should be prepared to evacuate if a wildfire breaks out. See readyforwildfire.org and wildfirerisk.org for information. && $$ CAZ354-355-362-101900- /O.CON.KLOX.FW.W.0013.241209T2200Z-241211T2200Z/ Ventura County Beaches-Ventura County Inland Coast-Malibu Coast- 943 AM PST Mon Dec 9 2024 ...PARTICULARLY DANGEROUS SITUATION (PDS) RED FLAG WARNING IN EFFECT FROM 10 PM TONIGHT UNTIL 2 PM TUESDAY DUE TO DAMAGING SANTA ANA WINDS AND VERY LOW HUMIDITIES FOR THE FOLLOWING AREAS: VENTURA COASTAL PLAIN (ESPECIALLY FOOTHILLS)/ MALIBU COAST -- AND RED FLAG WARNINGS IN EFFECT FOR ALL OTHER TIMES FROM 2 PM TODAY UNTIL 2 PM WEDNESDAY IN THESE SAME AREAS... * WINDS...Santa Ana winds expected to increase sharply by mid to late this afternoon, then peak later this evening through Tuesday, when speeds of 25 to 40 mph with gusts of 40 to 55 mph will likely be common. Isolated damaging gusts of 55 to 65 mph will be possible in the hills above Camarillo and Somis extending into east Ventura, as well as Point Mugu and Malibu. * RELATIVE HUMIDITY...Humidities are expected to lower to around 15 percent in many areas by late this afternoon or evening, with widespread humidities of 5 to 10 percent likely from late this evening into Tuesday, and persisting into Wednesday, with isolated readings as low as 2 percent likely. * IMPACTS...If fire ignition occurs, conditions are favorable for large fires with very rapid fire spread, extreme fire behavior, and long range spotting, which would threaten life and property. There is also the risk of damaging winds including trees and power lines, as well as power outages. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. Use extreme caution with anything that can spark a wildfire. Residents near wildland interfaces should be prepared to evacuate if a wildfire breaks out. See readyforwildfire.org and wildfirerisk.org for information. && $$ CAZ373-376>378-548-101900- /O.CON.KLOX.FW.W.0013.241209T1800Z-241212T0200Z/ Eastern San Fernando Valley-Southern Ventura County Mountains- Northern Ventura County Mountains-Interstate 5 Corridor- Los Angeles County San Gabriel Valley- 943 AM PST Mon Dec 9 2024 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM PST WEDNESDAY FOR GUSTY SANTA ANA WINDS AND VERY LOW RELATIVE HUMIDITY FOR THE VENTURA COUNTY MOUNTAINS, INTERSTATE 5 CORRIDOR, EASTERN SAN FERNANDO VALLEY, AND SAN GABRIEL VALLEY... * WINDS...Santa Ana winds expected to increase sharply late this morning or afternoon, then peak Monday night into Tuesday, when speeds of 20 to 30 mph with gusts of 35 to 55 mph will likely be common. Offshore winds are expected to diminish some on Wednesday, with gusts mostly in the 20 to 35 mph range. * RELATIVE HUMIDITY...Humidities are expected to lower to around 15 percent in many areas by this afternoon or early evening, with widespread humidities of 5 to 10 percent likely from late this evening into Tuesday, and persisting into Wednesday, with isolated readings as low as 2 percent likely. * IMPACTS...If fire ignition occurs, conditions are favorable for very rapid fire spread, extreme fire behavior, and long range spotting, which would threaten life and property. There is also the risk of locally damaging winds including trees and power lines. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. Use extreme caution with anything that can spark a wildfire. Residents near wildland interfaces should be prepared to evacuate if a wildfire breaks out. See readyforwildfire.org and wildfirerisk.org for information. && $$ CAZ345-101900- /O.CON.KLOX.FW.W.0013.241210T0600Z-241211T0600Z/ San Luis Obispo County Mountains- 943 AM PST Mon Dec 9 2024 ...RED FLAG WARNING REMAINS IN EFFECT FROM 10 PM THIS EVENING TO 10 PM PST TUESDAY FOR GUSTY SOUTHEAST TO EAST WINDS AND VERY LOW RELATIVE HUMIDITY FOR THE SAN LUIS OBISPO COUNTY MOUNTAINS... * WINDS...Southeast to east 15 to 30 mph with gusts to 40 mph. * RELATIVE HUMIDITY...Widespread single digit humidities developing by later tonight or Tuesday. * IMPACTS...If fire ignition occurs, conditions are favorable for rapid fire spread and extreme fire behavior which would threaten life and property. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. Use extreme caution with anything that can spark a wildfire. Residents near wildland interfaces should be prepared to evacuate if a wildfire breaks out. See readyforwildfire.org and wildfirerisk.org for information. && $$ Gomberg
941 WWUS86 KLOX 092140 RFWLOX URGENT - FIRE WEATHER MESSAGE National Weather Service Los Angeles/Oxnard CA 140 PM PST Mon Dec 9 2024 ...PARTICULARLY DANGEROUS SITUATION (PDS) RED FLAG WARNING IN EFFECT FROM 8 PM TONIGHT UNTIL 2 PM TUESDAY DUE TO DAMAGING SANTA ANA WINDS AND VERY LOW HUMIDITIES FOR THE FOLLOWING AREAS: SAN GABRIEL MOUNTAINS/ SANTA MONICA MOUNTAINS/ SANTA CLARITA VALLEY/ CALABASAS/ VENTURA COUNTY COASTS AND VALLEYS/ WESTERN SAN FERNANDO VALLEY -- AND RED FLAG WARNINGS IN EFFECT FOR ALL OTHER TIMES UNTIL 6 PM WEDNESDAY IN THESE SAME AREAS... ...PARTICULARLY DANGEROUS SITUATION (PDS) RED FLAG WARNING IN EFFECT FROM 8 PM TONIGHT UNTIL 10 AM WEDNESDAY DUE TO DAMAGING SANTA ANA WINDS AND VERY LOW HUMIDITIES FOR THE FOLLOWING AREAS: SANTA SUSANA MOUNTAINS-- AND RED FLAG WARNINGS IN EFFECT FOR ALL OTHER TIMES UNTIL 6 PM WEDNESDAY IN THIS SAME AREA... ...PARTICULARLY DANGEROUS SITUATION (PDS) RED FLAG WARNING IN EFFECT FROM 8 PM TONIGHT UNTIL 2 PM TUESDAY DUE TO DAMAGING SANTA ANA WINDS AND VERY LOW HUMIDITIES FOR THE FOLLOWING AREAS: VENTURA COASTAL PLAIN (ESPECIALLY FOOTHILLS)/ MALIBU COAST -- AND RED FLAG WARNINGS IN EFFECT FOR ALL OTHER TIMES FROM 2 PM MONDAY UNTIL 2 PM WEDNESDAY IN THESE SAME AREAS... ...RED FLAG WARNING IN EFFECT UNTIL 6 PM WEDNESDAY FOR VENTURA MOUNTAINS, I5 CORRIDOR, EASTERN SAN FERNANDO VALLEY, AND SAN GABRIEL VALLEY DUE TO GUSTY SANTA ANA WINDS AND VERY LOW HUMIDITIES... ...RED FLAG WARNING IN EFFECT FROM 10 PM TONIGHT UNTIL 10 PM TUESDAY FOR THE SAN LUIS OBISPO COUNTY MOUNTAINS DUE TO GUSTY EAST TO SOUTHEAST WINDS AND VERY LOW HUMIDITIES... ...RED FLAG WARNING IN EFFECT FROM 8 PM TONIGHT UNTIL 2 PM TUESDAY FOR THE CHANNEL ISLANDS AND PALOS VERDES DUE TO GUSTY SANTA ANA WINDS AND VERY LOW HUMIDITIES... ***THIS IS A PARTICULARLY DANGEROUS SITUATION (PDS) FOR MANY AREAS OF LOS ANGELES AND VENTURA COUNTIES *** A strong, widespread, and long duration Santa Ana event will bring widespread critical to extremely critical fire weather conditions to many areas of Los Angeles and Ventura counties through Wednesday. This will be a PARTICULAR DANGEROUS SITUATION (PDS) Red Flag Warning event in many areas, with the combination of a strong offshore pressure gradient (LAX-Daggett peaking at -8 to -9 mb), strong cold air advection, and moderate upper level wind support. As surface high pressure builds into the Great Basin, Santa Ana winds are expected to increase through the afternoon, then peak tonight into Tuesday. A marine layer cloud presence this morning may delay the onset of offshore winds across portions of the coast and coastal valleys by a few hours from what was expected yesterday. Offshore winds are expected to diminish some by Wednesday, but very dir will persist. With the strong likelihood of widespread single digit humidities with this event, there is high confidence for a long duration Red Flag event. In addition, there is high confidence of PDS Red Flag Warning conditions late this evening through Tuesday, as damaging wind gusts of 60 to 80 mph will likely overlap with single digit humidities across many of the windier mountain and foothill areas, and with gusts of 40 to 65 mph across most wind prone coastal and valley areas of Los Angeles and Ventura counties. With the threat of damaging wind gusts in these windier corridors, there will be an increased risk for downed trees and powerlines, along with power outages. The hardest hit areas will likely be the San Gabriels, Santa Susanas, western Santa Monicas into Malibu, Ventura county valleys (especially Simi Valley and Moorpark), western San Fernando Valley (especially Highway 118/210 corridors from Porter Ranch to San Fernando), and the hills above Camarillo into east Ventura. Due to the expected long duration of dangerous fire weather conditions and critically dry fuels, there is an increased risk for any new ignitions to have very rapid fire spread and extreme fire behavior (including long range spotting). As a result, there is the increasing threat for fire weather conditions to rival other historical fires in recent times including the Mountain and Thomas Fires. Dry offshore conditions will likely persist into Thursday morning, with a return of onshore flow and some humidity recovery in the afternoon. CAZ367-102000- /O.EXA.KLOX.FW.W.0013.241210T0400Z-241210T2200Z/ Palos Verdes Hills- 140 PM PST Mon Dec 9 2024 ...RED FLAG WARNING IN EFFECT FROM 8 PM THIS EVENING TO 2 PM PST TUESDAY FOR GUSTY SANTA ANA WINDS AND VERY LOW RELATIVE HUMIDITY FOR PALOS VERDES. The National Weather Service in Los Angeles/Oxnard has issued a Red Flag Warning for gusty Santa Ana winds and very low relative humidity, which is in effect from 8 PM this evening to 2 PM PST Tuesday. * WINDS...Santa Ana winds expected to increase this evening, then peak overnight into Tuesday morning. During the peak of the event, wind speeds of 15 to 30 mph with gusts to 40 mph can be expected, with the strongest winds focused across higher terrain. * RELATIVE HUMIDITY...Humidities are expected to lower to around 15 percent by this evening, with widespread humidities of 5 to 10 percent likely by Tuesday. * IMPACTS...If fire ignition occurs, conditions are favorable for large fires with very rapid fire spread, extreme fire behavior, and long range spotting, which would threaten life and property. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. Use extreme caution with anything that can spark a wildfire. Residents near wildland interfaces should be prepared to evacuate if a wildfire breaks out. See readyforwildfire.org and wildfirerisk.org for information. && $$ CAZ288-358-369>372-374-379-380-102000- /O.CON.KLOX.FW.W.0013.000000T0000Z-241212T0200Z/ Santa Clarita Valley-Central Ventura County Valleys- Western Santa Monica Mountains Recreational Area- Eastern Santa Monica Mountains Recreational Area- Calabasas and Agoura Hills-Western San Fernando Valley- Southeastern Ventura County Valleys- Western San Gabriel Mountains and Highway 14 Corridor- Eastern San Gabriel Mountains- 140 PM PST Mon Dec 9 2024 ...PARTICULARLY DANGEROUS SITUATION (PDS) RED FLAG WARNING IN EFFECT FROM 8 PM TONIGHT UNTIL 2 PM TUESDAY DUE TO DAMAGING SANTA ANA WINDS AND VERY LOW HUMIDITIES FOR THE FOLLOWING AREAS: SAN GABRIEL MOUNTAINS/ SANTA MONICA MOUNTAINS/ SANTA CLARITA VALLEY/ VENTURA COUNTY COASTS AND VALLEYS/ WESTERN SAN FERNANDO VALLEY -- AND RED FLAG WARNINGS IN EFFECT FOR ALL OTHER TIMES UNTIL 6 PM WEDNESDAY IN THESE SAME AREAS... * WINDS...Santa Ana winds expected to increase sharply this afternoon, then peak tonight into Tuesday. when speeds of 25 to 40 mph with gusts of 40 to 65 mph common across coastal and valley areas. Some of the windier foothills and mountains will likely see wind speeds of 30 to 50 mph with damaging wind gusts in the 60 to 80 mph range during the peak of the event tonight into Tuesday. Some of the highest wind areas will likely be the San Gabriels, Santa Susanas, western Santa Monicas into Malibu, Ventura county valleys (especially Simi Valley and Moorpark), and western San Fernando Valley (especially Highway 118/210 corridors from Porter Ranch to San Fernando). Offshore winds are expected to diminish some by Wednesday, with gusts mostly in the 20 to 40 mph range in the morning. * RELATIVE HUMIDITY...Humidities are expected to lower to around 15 percent in many areas by this afternoon or early evening, with widespread humidities of 5 to 10 percent likely later this evening into Tuesday, and persisting into Wednesday, with isolated readings as low as 2 percent likely. * IMPACTS...If fire ignition occurs, conditions are favorable for large fires with very rapid fire spread, extreme fire behavior, and long range spotting, which would threaten life and property. There is also the risk of damaging winds including downed trees and power lines, as well as power outages. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. Use extreme caution with anything that can spark a wildfire. Residents near wildland interfaces should be prepared to evacuate if a wildfire breaks out. See readyforwildfire.org and wildfirerisk.org for information. && $$ CAZ375-102000- /O.CON.KLOX.FW.W.0013.000000T0000Z-241212T0200Z/ Santa Susana Mountains- 140 PM PST Mon Dec 9 2024 ...PARTICULARLY DANGEROUS SITUATION (PDS) RED FLAG WARNING IN EFFECT FROM 10 PM TONIGHT UNTIL 10 AM WEDNESDAY DUE TO DAMAGING SANTA ANA WINDS AND VERY LOW HUMIDITIES FOR THE FOLLOWING AREAS: SANTA SUSANA MOUNTAINS-- AND RED FLAG WARNINGS IN EFFECT FOR ALL OTHER TIMES UNTIL 6 PM WEDNESDAY IN THIS SAME AREA... * WINDS...Santa Ana winds expected to increase sharply this afternoon, then peak tonight into Tuesday night, when speeds of 30 to 50 mph with damaging gusts of 65 to 80 mph are likely. Offshore winds are expected to diminish some by late Wednesday morning, with gusts mostly in the 20 to 40 mph range. * RELATIVE HUMIDITY...Humidities are expected to lower to around 15 percent this afternoon or early evening, with widespread humidities of 5 to 10 percent likely later this evening into Tuesday, and persisting into Wednesday, with isolated readings as low as 2 percent likely. * IMPACTS...If fire ignition occurs, conditions are favorable for large fires with very rapid fire spread, extreme fire behavior, and long range spotting, which would threaten life and property. There is also the risk of damaging winds including trees and power lines, as well as power outages. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. Use extreme caution with anything that can spark a wildfire. Residents near wildland interfaces should be prepared to evacuate if a wildfire breaks out. See readyforwildfire.org and wildfirerisk.org for information. && $$ CAZ354-355-362-102000- /O.CON.KLOX.FW.W.0013.241209T2200Z-241211T2200Z/ Ventura County Beaches-Ventura County Inland Coast-Malibu Coast- 140 PM PST Mon Dec 9 2024 ...PARTICULARLY DANGEROUS SITUATION (PDS) RED FLAG WARNING IN EFFECT FROM 8 PM TONIGHT UNTIL 2 PM TUESDAY DUE TO DAMAGING SANTA ANA WINDS AND VERY LOW HUMIDITIES FOR THE FOLLOWING AREAS: VENTURA COASTAL PLAIN (ESPECIALLY FOOTHILLS)/ MALIBU COAST -- AND RED FLAG WARNINGS IN EFFECT FOR ALL OTHER TIMES UNTIL 2 PM WEDNESDAY IN THESE SAME AREAS... * WINDS...Santa Ana winds expected to increase sharply by mid to late this afternoon, then peak later this evening through Tuesday, when speeds of 25 to 40 mph with gusts of 40 to 55 mph will likely be common. Isolated damaging gusts of 55 to 65 mph will be likely in the hills above Camarillo and Somis extending into east Ventura, as well as Point Mugu and Malibu. * RELATIVE HUMIDITY...Humidities are expected to lower to around 15 percent in many areas by late this afternoon or evening, with widespread humidities of 5 to 10 percent likely from late this evening into Tuesday, and persisting into Wednesday, with isolated readings as low as 2 percent likely. * IMPACTS...If fire ignition occurs, conditions are favorable for large fires with very rapid fire spread, extreme fire behavior, and long range spotting, which would threaten life and property. There is also the risk of damaging winds including trees and power lines, as well as power outages. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. Use extreme caution with anything that can spark a wildfire. Residents near wildland interfaces should be prepared to evacuate if a wildfire breaks out. See readyforwildfire.org and wildfirerisk.org for information. && $$ CAZ373-376>378-548-102000- /O.CON.KLOX.FW.W.0013.000000T0000Z-241212T0200Z/ Eastern San Fernando Valley-Southern Ventura County Mountains- Northern Ventura County Mountains-Interstate 5 Corridor- Los Angeles County San Gabriel Valley- 140 PM PST Mon Dec 9 2024 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM PST WEDNESDAY FOR GUSTY SANTA ANA WINDS AND VERY LOW RELATIVE HUMIDITY FOR THE VENTURA COUNTY MOUNTAINS, INTERSTATE 5 CORRIDOR, EASTERN SAN FERNANDO VALLEY, AND SAN GABRIEL VALLEY... * WINDS...Santa Ana winds expected to increase sharply this afternoon, then peak tonight into Tuesday, when speeds of 20 to 30 mph with gusts of 35 to 55 mph will likely be common. Offshore winds are expected to diminish some on Wednesday, with gusts mostly in the 20 to 35 mph range. * RELATIVE HUMIDITY...Humidities are expected to lower to around 15 percent in many areas this afternoon or early evening, with widespread humidities of 5 to 10 percent likely from late this evening into Tuesday, and persisting into Wednesday, with isolated readings as low as 2 percent likely. * IMPACTS...If fire ignition occurs, conditions are favorable for very rapid fire spread, extreme fire behavior, and long range spotting, which would threaten life and property. There is also the risk of locally damaging winds including trees and power lines. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. Use extreme caution with anything that can spark a wildfire. Residents near wildland interfaces should be prepared to evacuate if a wildfire breaks out. See readyforwildfire.org and wildfirerisk.org for information. && $$ CAZ345-102000- /O.CON.KLOX.FW.W.0013.241210T0600Z-241211T0600Z/ San Luis Obispo County Mountains- 140 PM PST Mon Dec 9 2024 ...RED FLAG WARNING REMAINS IN EFFECT FROM 10 PM THIS EVENING TO 10 PM PST TUESDAY FOR GUSTY SOUTHEAST TO EAST WINDS AND VERY LOW RELATIVE HUMIDITY FOR THE SAN LUIS OBISPO COUNTY MOUNTAINS... * WINDS...Southeast to east 15 to 30 mph with gusts to 40 mph. * RELATIVE HUMIDITY...Widespread single digit humidities developing by later tonight or Tuesday. * IMPACTS...If fire ignition occurs, conditions are favorable for rapid fire spread and extreme fire behavior which would threaten life and property. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. Use extreme caution with anything that can spark a wildfire. Residents near wildland interfaces should be prepared to evacuate if a wildfire breaks out. See readyforwildfire.org and wildfirerisk.org for information. && $$ CAZ549-550-102000- /O.CON.KLOX.FW.W.0013.241210T0400Z-241210T2200Z/ San Miguel and Santa Rosa Islands-Santa Cruz and Anacapa Islands- 140 PM PST Mon Dec 9 2024 ...RED FLAG WARNING REMAINS IN EFFECT FROM 8 PM THIS EVENING TO 2 PM PST TUESDAY FOR GUSTY SANTA ANA WINDS AND VERY LOW RELATIVE HUMIDITY FOR THE CHANNEL ISLANDS... * WINDS...Santa Ana winds expected to increase sharply this evening and persist through early Tuesday afternoon. During the peak of the event, wind speeds of 25 to 35 mph with gusts of 45 to 60 mph can be expected, with the strongest winds focused across higher terrain. * RELATIVE HUMIDITY...Humidities are expected to lower to around 15 percent in many areas by this evening, with widespread humidities of 5 to 10 percent likely by Tuesday. * IMPACTS...If fire ignition occurs, conditions are favorable for large fires with very rapid fire spread, extreme fire behavior, and long range spotting, which would threaten life and property. There is also the risk of locally damaging winds. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. Use extreme caution with anything that can spark a wildfire. Residents near wildland interfaces should be prepared to evacuate if a wildfire breaks out. See readyforwildfire.org and wildfirerisk.org for information. && $$ Gomberg
510 WWUS86 KLOX 101706 RFWLOX URGENT - FIRE WEATHER MESSAGE National Weather Service Los Angeles/Oxnard CA 906 AM PST Tue Dec 10 2024 ...PARTICULARLY DANGEROUS SITUATION (PDS) RED FLAG WARNING IN EFFECT UNTIL 2 PM TODAY DUE TO DAMAGING SANTA ANA WINDS AND VERY LOW HUMIDITIES FOR THE FOLLOWING AREAS: SAN GABRIEL MOUNTAINS/ SANTA MONICA MOUNTAINS/ SANTA CLARITA VALLEY/ CALABASAS/ VENTURA COUNTY COASTS AND VALLEYS/ WESTERN SAN FERNANDO VALLEY -- AND RED FLAG WARNINGS IN EFFECT FOR ALL OTHER TIMES UNTIL 6 PM WEDNESDAY IN THESE SAME AREAS... ...PARTICULARLY DANGEROUS SITUATION (PDS) RED FLAG WARNING IN EFFECT UNTIL 10 AM WEDNESDAY DUE TO DAMAGING SANTA ANA WINDS AND VERY LOW HUMIDITIES FOR THE FOLLOWING AREAS: SANTA SUSANA MOUNTAINS-- AND RED FLAG WARNINGS IN EFFECT FOR ALL OTHER TIMES UNTIL 6 PM WEDNESDAY IN THIS SAME AREA... ...PARTICULARLY DANGEROUS SITUATION (PDS) RED FLAG WARNING IN EFFECT UNTIL 2 PM TODAY DUE TO DAMAGING SANTA ANA WINDS AND VERY LOW HUMIDITIES FOR THE FOLLOWING AREAS: VENTURA COASTAL PLAIN (ESPECIALLY FOOTHILLS)/ MALIBU COAST -- AND RED FLAG WARNINGS IN EFFECT FOR ALL OTHER TIMES FROM 2 PM MONDAY UNTIL 2 PM WEDNESDAY IN THESE SAME AREAS... ...RED FLAG WARNING IN EFFECT UNTIL 6 PM WEDNESDAY FOR VENTURA MOUNTAINS, I5 CORRIDOR, EASTERN SAN FERNANDO VALLEY, AND SAN GABRIEL VALLEY DUE TO GUSTY SANTA ANA WINDS AND VERY LOW HUMIDITIES... ...RED FLAG WARNING IN EFFECT UNTIL 10 PM THIS EVENING FOR THE SAN LUIS OBISPO COUNTY MOUNTAINS DUE TO GUSTY EAST TO SOUTHEAST WINDS AND VERY LOW HUMIDITIES... ...RED FLAG WARNING IN EFFECT UNTIL 2 PM TODAY FOR THE CHANNEL ISLANDS AND PALOS VERDES DUE TO GUSTY SANTA ANA WINDS AND VERY LOW HUMIDITIES... ***THIS IS A PARTICULARLY DANGEROUS SITUATION (PDS) FOR MANY AREAS OF LOS ANGELES AND VENTURA COUNTIES *** A strong, widespread, and long duration Santa Ana event will bring widespread critical to extremely critical fire weather conditions to many areas of Los Angeles and Ventura counties through Wednesday. This will be a PARTICULARLY DANGEROUS SITUATION (PDS) Red Flag Warning event in many areas, with the combination of a strong offshore pressure gradient, strong cold air advection, and moderate upper level wind support. As surface high pressure builds into the Great Basin, Santa Ana winds will continue today into Wednesday, peaking through early this afternoon. The offshore winds are expected to diminish some by Wednesday, but a very dry air mass will persist. With the strong likelihood of widespread single digit humidities with this event, there is high confidence for a long duration Red Flag event. In addition, there is high confidence of PDS Red Flag Warning conditions through early this afternoon, as damaging wind gusts of 60 to 80 mph will likely overlap with single digit humidities across many of the windier mountain and foothill areas. Peak gusts of 40 to 65 mph will also affect most wind prone coastal and valley areas of Los Angeles and Ventura counties. With the threat of damaging wind gusts in these windier corridors, there will be an increased risk for downed trees and powerlines, along with power outages. The hardest hit areas will likely be the San Gabriels, Santa Susanas, western Santa Monicas into Malibu, Ventura county valleys (especially Simi Valley and Moorpark), western San Fernando Valley (especially Highway 118/210 corridors from Porter Ranch to San Fernando), and the hills above Camarillo into east Ventura. Due to the expected long duration of dangerous fire weather conditions and critically dry fuels, there is an increased risk for any new ignitions to have very rapid fire spread and extreme fire behavior (including long range spotting). As a result, there is the increasing threat for fire weather conditions to rival other historical fires in recent times including the Mountain and Thomas Fires. Dry offshore conditions will likely persist into Thursday morning, with a return of onshore flow and some humidity recovery in the afternoon. CAZ288-358-369>372-374-379-380-110115- /O.CON.KLOX.FW.W.0013.000000T0000Z-241212T0200Z/ Santa Clarita Valley-Central Ventura County Valleys- Western Santa Monica Mountains Recreational Area- Eastern Santa Monica Mountains Recreational Area- Calabasas and Agoura Hills-Western San Fernando Valley- Southeastern Ventura County Valleys- Western San Gabriel Mountains and Highway 14 Corridor- Eastern San Gabriel Mountains- 906 AM PST Tue Dec 10 2024 ...PARTICULARLY DANGEROUS SITUATION (PDS) RED FLAG WARNING IN EFFECT UNTIL 2 PM TODAY DUE TO DAMAGING SANTA ANA WINDS AND VERY LOW HUMIDITIES FOR THE FOLLOWING AREAS: SAN GABRIEL MOUNTAINS/ SANTA MONICA MOUNTAINS/ SANTA CLARITA VALLEY/ VENTURA COUNTY COASTS AND VALLEYS/ WESTERN SAN FERNANDO VALLEY -- AND RED FLAG WARNINGS IN EFFECT FOR ALL OTHER TIMES UNTIL 6 PM WEDNESDAY IN THESE SAME AREAS... * WINDS...Santa Ana winds will peak today with speeds of 25 to 40 mph gusting to 45 to 65 mph common across coastal and valley areas. Some of the windier foothills and mountains will likely see wind speeds of 30 to 50 mph with damaging wind gusts in the 60 to 80 mph range during the peak of the event through early this afternoon. Some of the highest wind areas will likely be the San Gabriels, Santa Susanas, western Santa Monicas into Malibu, Ventura county valleys (especially Simi Valley and Moorpark), and western San Fernando Valley (especially Highway 118/210 corridors from Porter Ranch to San Fernando). Offshore winds are expected to diminish some by Wednesday, with gusts mostly in the 20 to 40 mph range in the morning. * RELATIVE HUMIDITY...Widespread humidities of 5 to 10 percent are likely today, persisting into Wednesday, with isolated readings as low as 2 percent possible. * IMPACTS...If fire ignition occurs, conditions are favorable for large fires with very rapid fire spread, extreme fire behavior, and long range spotting, which would threaten life and property. There is also the risk of damaging winds including downed trees and power lines, as well as power outages. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. Use extreme caution with anything that can spark a wildfire. Residents near wildland interfaces should be prepared to evacuate if a wildfire breaks out. See readyforwildfire.org and wildfirerisk.org for information. && $$ CAZ375-110115- /O.CON.KLOX.FW.W.0013.000000T0000Z-241212T0200Z/ Santa Susana Mountains- 906 AM PST Tue Dec 10 2024 ...PARTICULARLY DANGEROUS SITUATION (PDS) RED FLAG WARNING IN EFFECT UNTIL 10 AM WEDNESDAY DUE TO DAMAGING SANTA ANA WINDS AND VERY LOW HUMIDITIES FOR THE FOLLOWING AREAS: SANTA SUSANA MOUNTAINS-- AND RED FLAG WARNINGS IN EFFECT FOR ALL OTHER TIMES UNTIL 6 PM WEDNESDAY IN THIS SAME AREA... * WINDS...Santa Ana winds will peak today into tonight with speeds of 30 to 50 mph. Damaging gusts of 65 to 80 mph are likely. Offshore winds are expected to diminish some by late Wednesday morning, with gusts mostly in the 20 to 40 mph range. * RELATIVE HUMIDITY...Widespread humidities of 5 to 10 percent are likely today, persisting into Wednesday, with isolated readings as low as 2 percent possible. * IMPACTS...If fire ignition occurs, conditions are favorable for large fires with very rapid fire spread, extreme fire behavior, and long range spotting, which would threaten life and property. There is also the risk of damaging winds including trees and power lines, as well as power outages. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. Use extreme caution with anything that can spark a wildfire. Residents near wildland interfaces should be prepared to evacuate if a wildfire breaks out. See readyforwildfire.org and wildfirerisk.org for information. && $$ CAZ354-355-362-110115- /O.CON.KLOX.FW.W.0013.000000T0000Z-241211T2200Z/ Ventura County Beaches-Ventura County Inland Coast-Malibu Coast- 906 AM PST Tue Dec 10 2024 ...PARTICULARLY DANGEROUS SITUATION (PDS) RED FLAG WARNING IN EFFECT UNTIL 2 PM TODAY DUE TO DAMAGING SANTA ANA WINDS AND VERY LOW HUMIDITIES FOR THE FOLLOWING AREAS: VENTURA COASTAL PLAIN (ESPECIALLY FOOTHILLS)/ MALIBU COAST -- AND RED FLAG WARNINGS IN EFFECT FOR ALL OTHER TIMES UNTIL 2 PM WEDNESDAY IN THESE SAME AREAS... * WINDS...Santa Ana winds will peak today with speeds of 25 to 40 mph gusting to 40 to 55 mph likely. Isolated damaging gusts of 55 to 65 mph will be likely in the hills above Camarillo and Somis extending into east Ventura, as well as Point Mugu and Malibu. Offshore winds are expected to diminish tonight into Wednesday morning, with gusts mostly in the 20 to 35 mph range. * RELATIVE HUMIDITY...Widespread humidities of 5 to 10 percent are likely today, persisting into Wednesday, with isolated readings as low as 2 percent possible. * IMPACTS...If fire ignition occurs, conditions are favorable for large fires with very rapid fire spread, extreme fire behavior, and long range spotting, which would threaten life and property. There is also the risk of damaging winds including trees and power lines, as well as power outages. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. Use extreme caution with anything that can spark a wildfire. Residents near wildland interfaces should be prepared to evacuate if a wildfire breaks out. See readyforwildfire.org and wildfirerisk.org for information. && $$ CAZ373-376>378-548-110115- /O.CON.KLOX.FW.W.0013.000000T0000Z-241212T0200Z/ Eastern San Fernando Valley-Southern Ventura County Mountains- Northern Ventura County Mountains-Interstate 5 Corridor- Los Angeles County San Gabriel Valley- 906 AM PST Tue Dec 10 2024 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM PST WEDNESDAY FOR GUSTY SANTA ANA WINDS AND VERY LOW RELATIVE HUMIDITY FOR THE VENTURA COUNTY MOUNTAINS, INTERSTATE 5 CORRIDOR, EASTERN SAN FERNANDO VALLEY, AND SAN GABRIEL VALLEY... * WINDS...Santa Ana winds will peak today with speeds of 20 to 30 mph gusting to 35 to 55 mph likely. Offshore winds are expected to diminish tonight and Wednesday, with gusts mostly in the 20 to 35 mph range. * RELATIVE HUMIDITY...Widespread humidities of 5 to 10 percent are likely today, persisting into Wednesday, with isolated readings as low as 2 percent possible. * IMPACTS...If fire ignition occurs, conditions are favorable for very rapid fire spread, extreme fire behavior, and long range spotting, which would threaten life and property. There is also the risk of locally damaging winds including trees and power lines. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. Use extreme caution with anything that can spark a wildfire. Residents near wildland interfaces should be prepared to evacuate if a wildfire breaks out. See readyforwildfire.org and wildfirerisk.org for information. && $$ CAZ345-110115- /O.CON.KLOX.FW.W.0013.000000T0000Z-241211T0600Z/ San Luis Obispo County Mountains- 906 AM PST Tue Dec 10 2024 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM PST THIS EVENING FOR GUSTY SOUTHEAST TO EAST WINDS AND VERY LOW RELATIVE HUMIDITY FOR THE SAN LUIS OBISPO COUNTY MOUNTAINS... * WINDS...Southeast to east 15 to 30 mph with gusts to 40 mph. * RELATIVE HUMIDITY...Widespread single digit humidities expected. * IMPACTS...If fire ignition occurs, conditions are favorable for rapid fire spread and extreme fire behavior which would threaten life and property. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. Use extreme caution with anything that can spark a wildfire. Residents near wildland interfaces should be prepared to evacuate if a wildfire breaks out. See readyforwildfire.org and wildfirerisk.org for information. && $$ CAZ549-550-102200- /O.CON.KLOX.FW.W.0013.000000T0000Z-241210T2200Z/ San Miguel and Santa Rosa Islands-Santa Cruz and Anacapa Islands- 906 AM PST Tue Dec 10 2024 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 2 PM PST THIS AFTERNOON FOR GUSTY SANTA ANA WINDS AND VERY LOW RELATIVE HUMIDITY FOR THE CHANNEL ISLANDS... * WINDS...Santa Ana winds will peak this morning, with wind speeds of 25 to 35 mph gusting to 45 to 60 mph expected. The strongest winds will be focused across higher terrain. * RELATIVE HUMIDITY...Widespread humidities of 5 to 10 percent. * IMPACTS...If fire ignition occurs, conditions are favorable for large fires with very rapid fire spread, extreme fire behavior, and long range spotting, which would threaten life and property. There is also the risk of locally damaging winds. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. Use extreme caution with anything that can spark a wildfire. Residents near wildland interfaces should be prepared to evacuate if a wildfire breaks out. See readyforwildfire.org and wildfirerisk.org for information. && $$ CAZ367-102200- /O.CON.KLOX.FW.W.0013.000000T0000Z-241210T2200Z/ Palos Verdes Hills- 906 AM PST Tue Dec 10 2024 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 2 PM PST THIS AFTERNOON FOR GUSTY SANTA ANA WINDS AND VERY LOW RELATIVE HUMIDITY... * WINDS...Santa Ana winds will peak this morning with wind speeds of 15 to 30 mph with gusts to 40 mph expected. The strongest winds will be focused across higher terrain. * RELATIVE HUMIDITY...Widespread humidities of 5 to 10 percent. * IMPACTS...If fire ignition occurs, conditions are favorable for large fires with very rapid fire spread, extreme fire behavior, and long range spotting, which would threaten life and property. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. Use extreme caution with anything that can spark a wildfire. Residents near wildland interfaces should be prepared to evacuate if a wildfire breaks out. See readyforwildfire.org and wildfirerisk.org for information. && $$ Sirard
224 WWUS86 KLOX 102219 RFWLOX URGENT - FIRE WEATHER MESSAGE National Weather Service Los Angeles/Oxnard CA 219 PM PST Tue Dec 10 2024 ...PARTICULARLY DANGEROUS SITUATION (PDS) RED FLAG WARNING IN EFFECT UNTIL 10 AM WEDNESDAY DUE TO STRONG SANTA ANA WINDS AND VERY LOW HUMIDITIES FOR THE FOLLOWING AREA: SANTA SUSANA MOUNTAINS-- THEN RED FLAG WARNING IN EFFECT 10 AM TO 6 PM WEDNESDAY IN THIS SAME AREA... ...RED FLAG WARNING IN EFFECT UNTIL 6 PM WEDNESDAY DUE TO STRONG SANTA ANA WINDS AND VERY LOW HUMIDITIES FOR THE FOLLOWING AREAS: SAN GABRIEL MOUNTAINS/ SANTA MONICA MOUNTAINS/ SANTA CLARITA VALLEY/ VENTURA COUNTY COASTS AND VALLEYS/ WESTERN SAN FERNANDO VALLEY/ VENTURA COUNTY MOUNTAINS/ I5 CORRIDOR... ...RED FLAG WARNING IN EFFECT UNTIL 2 PM WEDNESDAY DUE TO STRONG SANTA ANA WINDS AND VERY LOW HUMIDITIES FOR THE FOLLOWING AREAS: VENTURA COASTAL PLAIN (ESPECIALLY FOOTHILLS) AND MALIBU COAST... A strong Santa Ana event will continue to bring widespread critical to extremely critical fire weather conditions to many areas of Los Angeles and Ventura counties through Wednesday. For the Santa Susana Mountains, a PARTICULARLY DANGEROUS SITUATION (PDS) Red Flag Warning will continue into Wednesday morning, while elsewhere over wind-prone areas of Ventura and Los Angeles Counties Red Flag conditions will persist through Wednesday afternoon. Santa Ana winds will continue into Wednesday. The offshore winds are expected to diminish some by Wednesday, but a very dry air are likely today, persisting into Wednesday, mass will persist. Widespread single digit humidities can be expected through Wednesday. There is high confidence of PDS Red Flag Warning conditions through Wednesday morning for the Santa Susana Mountains, with gusts up to 55 mph possible. Peak gusts of 40 to 50 mph will also affect most wind prone coastal and valley areas of Los Angeles and Ventura counties through Wednesday morning. With the threat of these strong wind gusts in these windier corridors, there will be an increased risk for downed tree limbs and powerlines, along with power outages. The hardest hit areas will continue to be the San Gabriels, Santa Susanas, western Santa Monicas into Malibu, Ventura county valleys (especially Simi Valley and Moorpark), western San Fernando Valley (especially Highway 118/210 corridors from Porter Ranch to San Fernando), and the hills above Camarillo. Due to the expected long duration of dangerous fire weather conditions and critically dry fuels, there is the increased risk for any new ignitions to have very rapid fire spread and extreme fire behavior (including long range spotting). Dry offshore conditions will likely persist into Wednesday night, shifting onshore on Thursday. CAZ345-102330- /O.CAN.KLOX.FW.W.0013.000000T0000Z-241211T0600Z/ San Luis Obispo County Mountains- 219 PM PST Tue Dec 10 2024 ...RED FLAG WARNING IS CANCELLED... The National Weather Service in Los Angeles/Oxnard has cancelled the Red Flag Warning for the San Luis Obispo County Mountains. Winds have diminished and Red Flag conditions are no longer expected in this area. $$ CAZ373-548-102330- /O.CAN.KLOX.FW.W.0013.000000T0000Z-241212T0200Z/ Eastern San Fernando Valley-Los Angeles County San Gabriel Valley- 219 PM PST Tue Dec 10 2024 ...RED FLAG WARNING IS CANCELLED... The National Weather Service in Los Angeles/Oxnard has cancelled the Red Flag Warning for the Eastern San Fernando Valley and San Gabriel Valley. Winds have diminished and Red Flag conditions are no longer expected. $$ CAZ367-549-550-102330- /O.EXP.KLOX.FW.W.0013.000000T0000Z-241210T2200Z/ Palos Verdes Hills-San Miguel and Santa Rosa Islands- Santa Cruz and Anacapa Islands- 219 PM PST Tue Dec 10 2024 ...RED FLAG WARNING IS CANCELLED... The National Weather Service in Los Angeles/Oxnard has cancelled the Red Flag Warning for the Palos Verdes Hills, and San Miguel, Santa Rosa, Santa Cruz and Anacapa Islands. Winds have diminished and Red Flag conditions are no longer expected. $$ CAZ288-358-369>372-374-379-380-111730- /O.CON.KLOX.FW.W.0013.000000T0000Z-241212T0200Z/ Santa Clarita Valley-Central Ventura County Valleys- Western Santa Monica Mountains Recreational Area- Eastern Santa Monica Mountains Recreational Area- Calabasas and Agoura Hills-Western San Fernando Valley- Southeastern Ventura County Valleys- Western San Gabriel Mountains and Highway 14 Corridor- Eastern San Gabriel Mountains- 219 PM PST Tue Dec 10 2024 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM PST WEDNESDAY DUE TO STRONG SANTA ANA WINDS AND VERY LOW HUMIDITIES... * WINDS...northeast 20 to 30 mph with gusts up to 45 mph. * RELATIVE HUMIDITY...Widespread humidities of 5 to 10 percent with isolated readings as low as 2 percent possible. * IMPACTS...If fire ignition occurs, conditions are favorable for large fires with very rapid fire spread, extreme fire behavior, and long range spotting, which would threaten life and property. There is also the risk of damaging winds including downed trees and power lines, as well as power outages. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. Use extreme caution with anything that can spark a wildfire. Residents near wildland interfaces should be prepared to evacuate if a wildfire breaks out. See readyforwildfire.org and wildfirerisk.org for information. && $$ CAZ375-111730- /O.CON.KLOX.FW.W.0013.000000T0000Z-241212T0200Z/ Santa Susana Mountains- 219 PM PST Tue Dec 10 2024 ...PARTICULARLY DANGEROUS SITUATION (PDS) RED FLAG WARNING IN EFFECT UNTIL 10 AM WEDNESDAY DUE TO STRONG SANTA ANA WINDS AND VERY LOW HUMIDITIES FOR THE FOLLOWING AREA: SANTA SUSANA MOUNTAINS-- THEN RED FLAG WARNING IN EFFECT 10 AM TO 6 PM WEDNESDAY IN THIS SAME AREA... * WINDS...25 to 35 mph with gusts up to 55 mph. * RELATIVE HUMIDITY...Widespread humidities of 5 to 10 percent with isolated readings as low as 2 percent possible. * IMPACTS...If fire ignition occurs, conditions are favorable for large fires with very rapid fire spread, extreme fire behavior, and long range spotting, which would threaten life and property. There is also the risk of damaging winds including trees and power lines, as well as power outages. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. Use extreme caution with anything that can spark a wildfire. Residents near wildland interfaces should be prepared to evacuate if a wildfire breaks out. See readyforwildfire.org and wildfirerisk.org for information. && $$ CAZ354-355-362-111730- /O.CON.KLOX.FW.W.0013.000000T0000Z-241211T2200Z/ Ventura County Beaches-Ventura County Inland Coast-Malibu Coast- 219 PM PST Tue Dec 10 2024 ...RED FLAG WARNING IN EFFECT UNTIL 2 PM WEDNESDAY DUE TO GUSTY SANTA ANA WINDS AND VERY LOW HUMIDITIES... * WINDS...15 to 25 mph with gusts to 35 mph. * RELATIVE HUMIDITY...Widespread humidities of 8 to 15 percent. * IMPACTS...If fire ignition occurs, conditions are favorable for large fires with very rapid fire spread, extreme fire behavior, and long range spotting, which would threaten life and property. There is also the risk of damaging winds including trees and power lines, as well as power outages. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. Use extreme caution with anything that can spark a wildfire. Residents near wildland interfaces should be prepared to evacuate if a wildfire breaks out. See readyforwildfire.org and wildfirerisk.org for information. && $$ CAZ376>378-111730- /O.CON.KLOX.FW.W.0013.000000T0000Z-241212T0200Z/ Southern Ventura County Mountains- Northern Ventura County Mountains-Interstate 5 Corridor- 219 PM PST Tue Dec 10 2024 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM PST WEDNESDAY FOR GUSTY SANTA ANA WINDS AND VERY LOW RELATIVE HUMIDITY... * WINDS...20 to 30 mph with gusts to 40 mph. * RELATIVE HUMIDITY...Widespread humidities of 5 to 10 percent with isolated readings as low as 2 percent possible. * IMPACTS...If fire ignition occurs, conditions are favorable for very rapid fire spread, extreme fire behavior, and long range spotting, which would threaten life and property. There is also the risk of locally damaging winds including trees and power lines. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. Use extreme caution with anything that can spark a wildfire. Residents near wildland interfaces should be prepared to evacuate if a wildfire breaks out. See readyforwildfire.org and wildfirerisk.org for information. && $$ Sirard
135 WWUS86 KLOX 111805 RFWLOX URGENT - FIRE WEATHER MESSAGE National Weather Service Los Angeles/Oxnard CA 1005 AM PST Wed Dec 11 2024 ...RED FLAG WARNING IN EFFECT UNTIL 6 PM TODAY FOR MOST VALLEYS AND MOUNTAINS OF LOS ANGELES AND VENTURA COUNTIES... ...RED FLAG WARNING IN EFFECT UNTIL 2 PM TODAY FOR THE MALIBU AND VENTURA COUNTY COASTS... .Santa Ana winds will continue to weaken today and should end by later this evening. Gusts between 20 and 30 mph will be common in the wind prone areas into the afternoon however, with isolated gusts of 30 to 40 mph in the typically windiest locations this morning. Meanwhile, extremely low humidities will be more widespread than yesterday, with minimums under 10 percent common. The Red Flag Warnings will remain in place today, with no threats of extending. PDS warnings are no longer in effect. CAZ288-358-369>372-374>380-120200- /O.CON.KLOX.FW.W.0013.000000T0000Z-241212T0200Z/ Santa Clarita Valley-Central Ventura County Valleys- Western Santa Monica Mountains Recreational Area- Eastern Santa Monica Mountains Recreational Area- Calabasas and Agoura Hills-Western San Fernando Valley- Southeastern Ventura County Valleys-Santa Susana Mountains- Southern Ventura County Mountains- Northern Ventura County Mountains-Interstate 5 Corridor- Western San Gabriel Mountains and Highway 14 Corridor- Eastern San Gabriel Mountains- 1005 AM PST Wed Dec 11 2024 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM PST THIS EVENING... * WINDS...Northeast 8 to 15 mph with gusts to 30 mph. Isolated gusts of 30 to 40 mph in the favored hills. * HUMIDITY...Widespread humidities of 2 to 10 percent. * IMPACTS...If fire ignition occurs, conditions are favorable for extreme fire behavior which would threaten life and property. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. Use extreme caution with anything that can spark a wildfire. Residents near wildland interfaces should be prepared to evacuate if a wildfire breaks out. See readyforwildfire.org and wildfirerisk.org for information. && $$ CAZ354-355-362-112200- /O.CON.KLOX.FW.W.0013.000000T0000Z-241211T2200Z/ Ventura County Beaches-Ventura County Inland Coast-Malibu Coast- 1005 AM PST Wed Dec 11 2024 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 2 PM PST THIS AFTERNOON... * WINDS...North to northeast 8 to 15 mph with gusts to 25 mph. * HUMIDITY...Widespread humidities of 8 to 15 percent. * IMPACTS...If fire ignition occurs, conditions are favorable for extreme fire behavior which would threaten life and property. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. Use extreme caution with anything that can spark a wildfire. Residents near wildland interfaces should be prepared to evacuate if a wildfire breaks out. See readyforwildfire.org and wildfirerisk.org for information. && $$ rk
979 WWUS86 KLOX 112109 RFWLOX URGENT - FIRE WEATHER MESSAGE National Weather Service Los Angeles/Oxnard CA 109 PM PST Wed Dec 11 2024 CAZ288-358-369>372-374>380-112215- /O.CAN.KLOX.FW.W.0013.000000T0000Z-241212T0200Z/ Santa Clarita Valley-Central Ventura County Valleys- Western Santa Monica Mountains Recreational Area- Eastern Santa Monica Mountains Recreational Area- Calabasas and Agoura Hills-Western San Fernando Valley- Southeastern Ventura County Valleys-Santa Susana Mountains- Southern Ventura County Mountains- Northern Ventura County Mountains-Interstate 5 Corridor- Western San Gabriel Mountains and Highway 14 Corridor- Eastern San Gabriel Mountains- 109 PM PST Wed Dec 11 2024 ...RED FLAG WARNING IS CANCELLED... The National Weather Service in Los Angeles/Oxnard has cancelled the Red Flag Warning. Winds have decreased faster than expected. While very dry air and elevated fire weather conditions will persist into tonight, the threat of critical fire weather conditions have ended. $$ CAZ354-355-362-112215- /O.CAN.KLOX.FW.W.0013.000000T0000Z-241211T2200Z/ Ventura County Beaches-Ventura County Inland Coast-Malibu Coast- 109 PM PST Wed Dec 11 2024 ...RED FLAG WARNING IS CANCELLED... The National Weather Service in Los Angeles/Oxnard has cancelled the Red Flag Warning. Winds have decreased faster than expected. While very dry air and elevated fire weather conditions will persist into tonight, the threat of critical fire weather conditions have ended. $$
What forecasters said that day
The local office's own words before this red flag warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Los Angeles, CA wrote its last area forecast discussion before this red flag warning went out at Dec 7, 2:05 PM PST, 31 minutes earlier.
Area forecast discussion, Dec 7, 2:05 PM PST, 31 minutes before
Area Forecast Discussion
National Weather Service Los Angeles/Oxnard CA
205 PM PST Sat Dec 7 2024
.SYNOPSIS...07/109 PM.
Much cooler weather is expected Sunday and Monday as light onshore
flow returns as well as areas of low clouds and locally dense fog.
Then late Monday into Tuesday a strong and possibly damaging
Santa Ana wind event is expected across parts of Los Angeles and
Ventura Counties. Fire weather concerns will be high with the
winds and low humidity. Rain is possible by next Friday or
Saturday.
&&
.SHORT TERM (TDY-TUE)...07/154 PM.
After another warm day across the area today high temperatures
are expected to cool 6-12 degrees Sunday and Monday as light
onshore flow returns. That still keeps most of the area 3-6
degrees above normal. And along with that shift to light onshore
flow there is a 50-70% chance of a shallow marine layer returning
to coastal areas with areas of very dense fog. Aside from that
Sunday and Monday will be relatively low impact weather days.
The biggest concern in the short term weather is the expected
development of another potentially very dangerous Santa Ana wind
event Monday night into Tuesday, creating significant fire weather
conditions. The NAM has double downed on the gradients with the
12z run, boosting an already impressive gradient of -8mb on the
Friday models to a hefty -10mb with the 12z run this morning.
Couple that with 50kt sustained winds as low as 900mb and strong
cold advection and the ingredients are in place for a very strong
Santa Ana wind event. This event is maximized with an easterly
wind component and very little north component, which typically
favors the entire Oxnard/Ventura/Camarillo plain and through the
interior Ventura County valleys, along with the usual areas of the
Santa Clarita Valley as well as the San Gabriels and Santa Susana
Mountains. A -10mb gradient would be greater than the 97th
percentile of all offshore events over the last 30 years or so.
And often, especially with strong events, the actual gradient will
weaken by 1-2 mb. In any case, even an -8mb gradient with similar
support aloft will produce very strong winds.
As mentioned, this event has quite a bit of cold air advection
with it so this will not be a particularly warm Santa Ana event.
However, temperatures are expected to remain mostly in the 70s
which for this time of year is at least 3-6 degrees above normal.
With humidities dropping into the teens and single digits during
the day and minimal overnight recovery, areas that are sheltered
from the winds at night will see temperatures drop considerably,
with areas of frost/freeze likely. The most notable areas would be
the Antelope Valley and portions of interior SLO County where
overnight temps in the 20s are likely, and the AV could see some
high teens.
.LONG TERM (WED-SAT)...07/204 PM.
Some lingering offshore winds expected on Wednesday but with
upper support dropping off winds are expected to be much weaker
than Tuesday. The rest of the week will feature a gradual return
to onshore flow as models continue to advertise another storm
system hitting the West Coast either Friday or Saturday. Still
quite a bit of ensemble spread, but overall the trend has been
towards a weaker system, and decreasing chances for rain south of
Santa Barbara. All the 12z ensembles keep rain amounts in the LA
area at less than a tenth of an inch (with roughly 50% of the
solutions showing no rain), and only around a quarter inch across
northern areas.
&&
.AVIATION...07/1907Z.
Around 19Z, there was no marine layer or inversion at KLAX.
Low confidence in coastal TAFs between 06Z-18Z with a 20-40
percent chance (except 50 percent at KLGB) of at least brief
VLIFR/LIFR cigs/vsbys.
Otherwise high confidence in light winds and VFR conds elsewhere
and otherwise.
KLAX...There is a 20-30 percent chance of VLIFR conditions
between 10Z and 17Z. Any east winds will likely be less than 7
knots.
KBUR...VFR conditions are expected through the period.
&&
.MARINE...07/139 PM.
Moderate confidence in the current forecast. Slightly higher
confidence in seas relative to winds.
For the waters southwest through northwest of the Channel Islands
and along the Central Coast, there is a low chance (10 to 30
percent) chance of Small Craft Advisory (SCA) level northwest
winds this afternoon, increasing to a moderate- to-likely (30 to
60 percent) chance of SCA level winds this evening through early
Monday morning. The highest chance for SCA level winds will be for
the waters beyond 30 NM offshore of the Central Coast extending
south to northwest of San Nicolas Island, while the lowest chance
will be for the waters nearshore along the Central Coast. There is
a moderate-to-high (30-50 percent) chance of widespread SCA
conditions between Sunday night and Monday across this region.
After Monday morning, winds and seas will likely drop below SCA
levels through Wednesday.
Inside the southern California bight, nearshore Ventura to Malibu
west to the Channel Islands, SCA level winds are likely (80-90
percent chance) late Monday to early Wednesday with a 30-50
percent chance of peaking at GALE strength Tuesday morning to
early afternoon. There is a 60-70 percent chance of SCA offshore
winds from the Port of LA to Catalina Harbor. There is a
moderate- to- high chance (60-70 percent) of breaking waves or
minor coastal flooding for east facing harbors. Theses harbors
would include Avalon and Two Harbors on Catalina Island, and
Smugglers Cove on Santa Cruz Island.
&&
.BEACHES...07/250 AM.
High astronomical tides approaching 7 feet during the early
morning hours will bring a chance of moderate coastal flooding to
southwest California shores late next week and next weekend.
Normally dry beach walkways and parking lots may see tidal
overflows and minor coastal flooding. There is a chance that beach
erosion may occur. Rip current activity may increase during the
run up to high tide.
&&
.LOX WATCHES/WARNINGS/ADVISORIES...
CA...Fire Weather Watch in effect from Monday morning through
Wednesday afternoon for zones
288-354-355-358-362-369>380-548. (See LAXRFWLOX).
PZ...Small Craft Advisory in effect until 4 AM PST Monday for zone
670. (See LAXMWWLOX).
Small Craft Advisory in effect from 9 PM this evening to 9 AM
PST Sunday for zone 673. (See LAXMWWLOX).
&&
PUBLIC...MW
AVIATION...Munroe
MARINE...Munroe/Hall
BEACHES...Hall
SYNOPSIS...MW
weather.gov/losangeles
Experimental Graphical Hazardous Weather Outlook at:
https://www.weather.gov/erh/ghwo?wfo=loxThe office that day
Everything else NWS Los Angeles, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 6, 7:19 PM PST | Small Craft Advisory | LOX | 49 hr | |
| Dec 6, 7:30 PM PST | Wind Advisory | LOX | Los Angeles, Ventura | 15 hr |
| Dec 7, 2:36 PM PST | Fire Weather Watch | LOX | San Luis Obispo | 24 hr |
Nearby
Red Flag Warnings in California, 2024Every red flag warning in 2024
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.