Alert archive / California / Red Flag Warnings in 2019
Red Flag Warning 3, NWS San Diego, CA
NWS San Diego, CA issued this red flag warning at Oct 26, 2019, 1:19 PM PDT for 4 counties in California. It took effect at Oct 27, 2019, 10:00 PM PDT. It was in force for 20 hr. 8 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
- Oct 26, 2019, 1:19 PM PDT (20:19 UTC)
- In effect from
- Oct 27, 2019, 10:00 PM PDT
- Expired
- Oct 28, 2019, 6:00 PM PDT
- In force
- 20 hr
- Issued by
- NWS San Diego, CA
Counties Orange County, CA, Riverside County, CA, San Bernardino County, CA, San Diego County, CA
The radar
The Santa Ana Mts radar (KSOX), 88 km from the middle of the area, began a volume at 20:21 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 |
|---|---|---|---|
| Oct 28, 4:10 AM PDT | NON-TSTM WND GST 52 | 1 Ese Ontario, CA | WEATHER STATION AT ONTARIO AIRPORT. |
| Oct 28, 4:45 AM PDT | NON-TSTM WND GST 51 | 5 Wnw Palomar Mountain, CA | WEATHER STATION AT PALOMAR MOUNTAIN LAUNCH. |
| Oct 28, 5:51 AM PDT | NON-TSTM WND GST 63 | 8 Ene Orange, CA | WEATHER STATION AT FREMONT CANYON. STATION ELEVATION: 1780 FT. |
| Oct 28, 6:10 AM PDT | NON-TSTM WND GST 51 | 3 Sw Devore, CA | WEATHER STATION AT LYTLE CREEK WASH. |
| Oct 28, 6:20 AM PDT | NON-TSTM WND GST 52 | 7 E Valley Center, CA | WEATHER STATION AT HELLHOLE CANYON. |
| Oct 28, 6:25 AM PDT | NON-TSTM WND GST 51 | 9 Wnw Santa Ysabel, CA | WEATHER STATION AT BIG BLACK MOUNTAIN. |
| Oct 28, 6:30 AM PDT | NON-TSTM WND GST 51 | 6 S Lytle Creek, CA | WEATHER STATION AT BULLOCK SPUR. |
| Oct 28, 6:30 AM PDT | NON-TSTM WND GST 52 | 5 Sw Devore, CA | WEATHER STATION AT LYTLE CREEK RD. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
San Diego, CA (KNKX), launched 12:00Z, 8.3 hours before the alert went out and 124 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
- 4393 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 18 m²/s²
- 0-3 km storm-relative helicity
- 41 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
611 WWUS86 KSGX 262019 RFWSGX URGENT - FIRE WEATHER MESSAGE National Weather Service San Diego CA 119 PM PDT Sat Oct 26 2019 CAZ248-255>257-265-554-270500- /O.UPG.KSGX.FW.A.0003.191028T0600Z-191029T0100Z/ /O.NEW.KSGX.FW.W.0003.191028T0500Z-191029T0100Z/ San Bernardino and Riverside County Valleys - The Inland Empire- San Bernardino County Mountains- Including The Mountain Top And Front Country Ranger Districts Of The San Bernardino National Forest-Riverside County Mountains- Including The San Jacinto Ranger District Of The San Bernardino National Forest-Santa Ana Mountains- Including The Trabuco Ranger District of the Cleveland National Forest-San Gorgonio Pass Near Banning-Orange County Inland Areas- 119 PM PDT Sat Oct 26 2019 ...RED FLAG WARNING IN EFFECT FROM 10 PM SUNDAY TO 6 PM PDT MONDAY FOR STRONG GUSTY WINDS AND LOW HUMIDITY FOR SAN BERNARDINO RIVERSIDE AND SANTA ANA MOUNTAINS, SAN GORGONIO PASS AREA, INLAND EMPIRE AND INLAND ORANGE COUNTY... The National Weather Service in San Diego has issued a Red Flag Warning...which is in effect from 10 PM Sunday to 6 PM PDT Monday. * Fire Weather Watch has become a Red Flag Warning. * WINDS...North to northeast 15 to 25 with gusts 35 to 50 mph. Peak gusts to 70 mph in offshore wind-prone areas. * HUMIDITY...Falling to 5-10 percent. * TIMING...Sunday night through Monday afternoon. * OUTLOOK...Winds will be light and relative humidity will recover on Tuesday. Another moderate to strong Santa Ana wind event is possible by Wednesday. * IMPACTS...If fire ignition occurs, conditions will be favorable for extreme fire behavior and rapid growth 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. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ CAZ250-258-270500- /O.CON.KSGX.FW.A.0003.191028T1500Z-191029T0100Z/ San Diego County Inland Valleys-San Diego County Mountains- Including The Palomar And Descanso Ranger Districts of the Cleveland National Forest- 119 PM PDT Sat Oct 26 2019 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM MONDAY MORNING THROUGH MONDAY AFTERNOON FOR STRONG GUSTY WINDS AND LOW HUMIDITY FOR THE SAN DIEGO COUNTY Mountains AND EASTERN VALLEY AREAS... * WIND...Increasing east to northeast winds 15 to 25 mph with gusts to 35 To locally 45 mph. * HUMIDITY...Falling to 5-10 percent. * TIMING...Monday morning through Monday afternoon. * OUTLOOK...Winds will turn back onshore and become gusty from the west on Tuesday pushing higher humidity inland. A moderate to strong Santa Ana wind event is possible by Wednesday. * IMPACTS...If fire ignition occurs, conditions will be favorable for extreme fire behavior and rapid growth which would threaten life and property. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$
7 follow-up statements
413 WWUS86 KSGX 270449 RFWSGX URGENT - FIRE WEATHER MESSAGE National Weather Service San Diego CA 949 PM PDT Sat Oct 26 2019 CAZ248-255>257-265-554-271300- /O.CON.KSGX.FW.W.0003.191028T0500Z-191029T0100Z/ San Bernardino and Riverside County Valleys - The Inland Empire- San Bernardino County Mountains- Including The Mountain Top And Front Country Ranger Districts Of The San Bernardino National Forest-Riverside County Mountains- Including The San Jacinto Ranger District Of The San Bernardino National Forest-Santa Ana Mountains- Including The Trabuco Ranger District of the Cleveland National Forest-San Gorgonio Pass Near Banning-Orange County Inland Areas- 949 PM PDT Sat Oct 26 2019 ...RED FLAG WARNING REMAINS IN EFFECT FROM 10 PM SUNDAY TO 6 PM PDT MONDAY FOR STRONG GUSTY WINDS AND LOW HUMIDITY FOR SAN BERNARDINO RIVERSIDE AND SANTA ANA MOUNTAINS, SAN GORGONIO PASS AREA, INLAND EMPIRE AND INLAND ORANGE COUNTY... * WINDS...North to northeast 20 to 30 with gusts to 50 mph. Gusts to 70 mph in the backcountry canyons and hillsides. * HUMIDITY...Falling into the single digits with very poor overnight recovery. * TIMING...Sunday night through Monday afternoon. * OUTLOOK...By Tuesday, winds will be light and relative humidity will recover. Another moderate to strong Santa Ana wind event is possible by Wednesday and into Thursday. * IMPACTS...If fire ignition occurs, conditions will be favorable for extreme fire behavior and rapid growth 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. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ CAZ250-258-271300- /O.CON.KSGX.FW.A.0003.191028T1500Z-191029T0100Z/ San Diego County Inland Valleys-San Diego County Mountains- Including The Palomar And Descanso Ranger Districts of the Cleveland National Forest- 949 PM PDT Sat Oct 26 2019 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM MONDAY MORNING THROUGH MONDAY AFTERNOON FOR STRONG GUSTY WINDS AND LOW HUMIDITY FOR THE SAN DIEGO COUNTY MOUNTAINS AND EASTERN VALLEY AREAS... * WIND...Increasing east to northeast winds 15 to 25 mph with gusts to 45 mph possible. * HUMIDITY...Falling into the single digits with very poor overnight recovery. * TIMING...Monday morning through Monday afternoon. * OUTLOOK...Winds will turn back onshore and become gusty from the west on Tuesday pushing higher humidity inland. A moderate to strong Santa Ana wind event is possible by Wednesday and into Tuesday. * IMPACTS...If fire ignition occurs, conditions will be favorable for extreme fire behavior and rapid growth which would threaten life and property. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$ jmb
230 WWUS86 KSGX 271119 RFWSGX URGENT - FIRE WEATHER MESSAGE National Weather Service San Diego CA 419 AM PDT Sun Oct 27 2019 CAZ248-255>257-265-554-272100- /O.CON.KSGX.FW.W.0003.191028T0500Z-191029T0100Z/ San Bernardino and Riverside County Valleys - The Inland Empire- San Bernardino County Mountains- Including The Mountain Top And Front Country Ranger Districts Of The San Bernardino National Forest-Riverside County Mountains- Including The San Jacinto Ranger District Of The San Bernardino National Forest-Santa Ana Mountains- Including The Trabuco Ranger District of the Cleveland National Forest-San Gorgonio Pass Near Banning-Orange County Inland Areas- 419 AM PDT Sun Oct 27 2019 ...RED FLAG WARNING REMAINS IN EFFECT FROM 10 PM THIS EVENING TO 6 PM MONDAY FOR STRONG GUSTY WINDS AND LOW HUMIDITY FOR SAN BERNARDINO RIVERSIDE AND SANTA ANA MOUNTAINS, SAN GORGONIO PASS AREA, ORANGE COUNTY AND THE INLAND EMPIRE BELOW THE CAJON PASS... * WINDS...North to northeast 20 to 30 with gusts to 50 mph. Gusts to 70 mph in the backcountry canyons and hillsides. * HUMIDITY...Falling into the single digits with very poor overnight recovery. * TIMING...Tonight through Monday afternoon. * OUTLOOK...By Tuesday, winds will be light and relative humidity will recover. Another moderate to strong Santa Ana wind event is likely Wednesday and Thursday. * IMPACTS...If fire ignition occurs, conditions will be favorable for extreme fire behavior and rapid growth 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. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ CAZ250-258-272100- /O.CON.KSGX.FW.A.0003.191028T1500Z-191029T0100Z/ San Diego County Inland Valleys-San Diego County Mountains- Including The Palomar And Descanso Ranger Districts of the Cleveland National Forest- 419 AM PDT Sun Oct 27 2019 ...FIRE WEATHER WATCH REMAINS IN EFFECT MONDAY FOR STRONG GUSTY WINDS AND LOW HUMIDITY IN THE SAN DIEGO COUNTY MOUNTAINS AND EASTERN VALLEYS... * WIND...Increasing east to northeast winds 15 to 25 mph with gusts to 45 mph Monday morning. * HUMIDITY...Falling into the single digits with very poor overnight recovery. * TIMING...Monday morning through Monday afternoon. * OUTLOOK...Winds will turn back onshore and become gusty from the west on Tuesday pushing higher humidity inland. Another moderate to strong Santa Ana wind event is likely Wednesday and Thursday. * IMPACTS...If fire ignition occurs, conditions will be favorable for extreme fire behavior and rapid growth which would threaten life and property. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$ Moede
728 WWUS86 KSGX 271626 RFWSGX URGENT - FIRE WEATHER MESSAGE National Weather Service San Diego CA 926 AM PDT Sun Oct 27 2019 CAZ250-258-271730- /O.CAN.KSGX.FW.A.0003.191028T1500Z-191029T0100Z/ San Diego County Inland Valleys-San Diego County Mountains- Including The Palomar And Descanso Ranger Districts of the Cleveland National Forest- 926 AM PDT Sun Oct 27 2019 ...FIRE WEATHER WATCH IS CANCELLED FOR INLAND PORTIONS OF SAN DIEGO COUNTY ON MONDAY... The National Weather Service in San Diego has cancelled the Fire Weather Watch. Latest forecast guidance shows less wind over San Diego County on Monday than previous. This, coupled with slower drying does not support widespread critical fire weather conditions. An elevated fire weather condition is still likely for a few hours, but winds will fall off rapidly on Monday afternoon. $$ CAZ248-255>257-265-554-280030- /O.CON.KSGX.FW.W.0003.191028T0500Z-191029T0100Z/ San Bernardino and Riverside County Valleys - The Inland Empire- San Bernardino County Mountains- Including The Mountain Top And Front Country Ranger Districts Of The San Bernardino National Forest-Riverside County Mountains- Including The San Jacinto Ranger District Of The San Bernardino National Forest-Santa Ana Mountains- Including The Trabuco Ranger District of the Cleveland National Forest-San Gorgonio Pass Near Banning-Orange County Inland Areas- 926 AM PDT Sun Oct 27 2019 ...RED FLAG WARNING REMAINS IN EFFECT FROM 10 PM THIS EVENING TO 6 PM PDT MONDAY FOR STRONG GUSTY WINDS AND LOW HUMIDITY FOR SAN BERNARDINO RIVERSIDE AND SANTA ANA MOUNTAINS, SAN GORGONIO PASS AREA, ORANGE COUNTY AND THE INLAND EMPIRE BELOW THE CAJON PASS... * WINDS...North to northeast 25 to 40 with gusts to 50 mph. Local gusts to 70 mph below the Cajon Pass and over the Santa Ana Mountains. * HUMIDITY...Falling into the single digits with very poor overnight recovery. * TIMING...Tonight through Monday afternoon. * OUTLOOK...By Tuesday, winds will be light and relative humidity will recover. Another moderate to strong Santa Ana wind event is likely Wednesday and Thursday. * IMPACTS...If fire ignition occurs, conditions will be favorable for extreme fire behavior and rapid growth which would threaten life and property. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ 10
780 WWUS86 KSGX 272000 RFWSGX URGENT - FIRE WEATHER MESSAGE National Weather Service San Diego CA 100 PM PDT Sun Oct 27 2019 ...RED FLAG WARNING FOR SAN BERNARDINO RIVERSIDE AND SANTA ANA MOUNTAINS, SAN GORGONIO PASS AREA, ORANGE COUNTY AND THE INLAND EMPIRE BELOW THE CAJON PASS TONIGHT AND MONDAY... ...FIRE WEATHER WATCH FOR SAN BERNARDINO RIVERSIDE AND SANTA ANA MOUNTAINS, SAN GORGONIO PASS AREA, ORANGE COUNTY AND THE INLAND EMPIRE BELOW THE CAJON PASS AND THE SAN DIEGO COUNTY MOUNTAINS AND VALLEYS TUESDAY NIGHT THROUGH THURSDAY... .Strong north to northeast winds will surface this evening through and below the Cajon Pass and over the Santa Ana Mountains and inland Orange County. The winds will peak Monday morning and decrease during the afternoon. winds will be weaker over San Diego County but it will be very dry and breezy by late Monday morning. Another strong offshore wind event is likely for Tuesday night into Thursday, prompting another Fire Weather Watch for that period over most of Southern California. CAZ248-255>257-265-554-280500- /O.NEW.KSGX.FW.A.0004.191030T0600Z-191101T0100Z/ /O.CON.KSGX.FW.W.0003.191028T0500Z-191029T0100Z/ San Bernardino and Riverside County Valleys - The Inland Empire- San Bernardino County Mountains- Including The Mountain Top And Front Country Ranger Districts Of The San Bernardino National Forest-Riverside County Mountains- Including The San Jacinto Ranger District Of The San Bernardino National Forest-Santa Ana Mountains- Including The Trabuco Ranger District of the Cleveland National Forest-San Gorgonio Pass Near Banning-Orange County Inland Areas- 100 PM PDT Sun Oct 27 2019 ...RED FLAG WARNING REMAINS IN EFFECT FROM 10 PM THIS EVENING TO 6 PM PDT MONDAY FOR STRONG GUSTY WINDS AND LOW HUMIDITY SAN BERNARDINO RIVERSIDE AND SANTA ANA MOUNTAINS, SAN GORGONIO PASS AREA, ORANGE COUNTY AND THE INLAND EMPIRE BELOW THE CAJON PASS... ...FIRE WEATHER WATCH IN EFFECT FROM TUESDAY EVENING THROUGH THURSDAY AFTERNOON FOR STRONG GUSTY WINDS AND LOW HUMIDITY FOR SAN BERNARDINO RIVERSIDE AND SANTA ANA MOUNTAINS, SAN GORGONIO PASS AREA, ORANGE COUNTY AND THE INLAND EMPIRE BELOW THE CAJON PASS... The National Weather Service in San Diego has issued a Fire Weather Watch...which is in effect from Tuesday evening through Thursday afternoon. * WINDS...North to northeast 25 to 40 with gusts to 50 mph. Local gusts to 70 mph below the Cajon Pass and over the Santa Ana Mountains. * HUMIDITY...Falling into the single digits with very poor overnight recovery. * TIMING...For the Warning...Tonight through Monday afternoon. For the Watch...late Tuesday evening thrugh Thursday. * OUTLOOK...By Tuesday, winds will be light and relative humidity will recover. Another moderate to strong Santa Ana wind event is likely Tuesday night through Thursday. * IMPACTS...If fire ignition occurs, conditions will be favorable for extreme fire behavior and rapid growth 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. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$ CAZ250-258-280500- /O.NEW.KSGX.FW.A.0004.191030T0600Z-191101T0100Z/ San Diego County Inland Valleys-San Diego County Mountains- Including The Palomar And Descanso Ranger Districts of the Cleveland National Forest- 100 PM PDT Sun Oct 27 2019 ...FIRE WEATHER WATCH IN EFFECT FROM TUESDAY EVENING THROUGH THURSDAY AFTERNOON FOR STRONG GUSTY WINDS AND LOW HUMIDITY FOR THE SAN DIEGO COUNTY MOUNTAINS AND VALLEYS... The National Weather Service in San Diego has issued a Fire Weather Watch...which is in effect from Tuesday evening through Thursday afternoon. * LOCATION...Mountains and Valleys * WIND...Northeast to east 20 to 35 MPH with gusts 60 MPH on the coastal slopes * HUMIDITY...5-10% * TIMING...Late Tuesday night through Thursday * OUTLOOK...Very dry and breezy offshore conditions are likely to continue into next weekend keeping fire weather conditions elevated. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$ 10
917 WWUS86 KSGX 280440 RFWSGX URGENT - FIRE WEATHER MESSAGE National Weather Service San Diego CA 940 PM PDT Sun Oct 27 2019 ...RED FLAG WARNING FOR SAN BERNARDINO, RIVERSIDE, AND SANTA ANA MOUNTAINS, SAN GORGONIO PASS, ORANGE COUNTY, AND THE INLAND EMPIRE BELOW THE CAJON PASS TONIGHT AND MONDAY... ...FIRE WEATHER WATCH FOR SAN BERNARDINO, RIVERSIDE, AND SANTA ANA MOUNTAINS, SAN GORGONIO PASS, ORANGE COUNTY, THE INLAND EMPIRE BELOW THE CAJON PASS, AND THE SAN DIEGO COUNTY MOUNTAINS AND VALLEYS TUESDAY NIGHT THROUGH THURSDAY... .Strong north to northeast winds will occur Monday through and below the Cajon Pass and over the Santa Ana Mountains and inland Orange County. The winds will be weaker over San Diego County but it will still be very dry. Another Santa Ana event, potentially the strongest of the season, is slated for Tuesday night through Thursday, prompting another Fire Weather Watch over most of Southern California. CAZ248-255>257-265-554-281245- /O.CON.KSGX.FW.W.0003.191028T0500Z-191029T0100Z/ /O.CON.KSGX.FW.A.0004.191030T0600Z-191101T0100Z/ San Bernardino and Riverside County Valleys - The Inland Empire- San Bernardino County Mountains- Including The Mountain Top And Front Country Ranger Districts Of The San Bernardino National Forest-Riverside County Mountains- Including The San Jacinto Ranger District Of The San Bernardino National Forest-Santa Ana Mountains- Including The Trabuco Ranger District of the Cleveland National Forest-San Gorgonio Pass Near Banning-Orange County Inland Areas- 940 PM PDT Sun Oct 27 2019 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM PDT MONDAY FOR STRONG GUSTY WINDS AND LOW HUMIDITY FOR SAN BERNARDINO, RIVERSIDE AND SANTA ANA MOUNTAINS, SAN GORGONIO PASS, ORANGE COUNTY, AND THE INLAND EMPIRE BELOW THE CAJON PASS... ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM TUESDAY EVENING THROUGH THURSDAY AFTERNOON FOR STRONG GUSTY WINDS AND LOW HUMIDITY FOR SAN BERNARDINO, RIVERSIDE, AND SANTA ANA MOUNTAINS, SAN GORGONIO PASS, ORANGE COUNTY, THE INLAND EMPIRE BELOW THE CAJON PASS, AND THE SAN DIEGO COUNTY MOUNTAINS AND VALLEYS... The National Weather Service in San Diego has issued a Fire Weather Watch...which is in effect from Tuesday evening through Thursday afternoon. * WINDS...North to northeast 25 to 35 with gusts to 50 mph. Isolated gusts to 70 mph below Cajon Pass and over the Santa Ana Mountains. * HUMIDITY...Single digits with very poor overnight recovery. * TIMING...For the Warning...Tonight through Monday afternoon. For the Watch...Tuesday evening through Thursday. * OUTLOOK...By Tuesday, winds will be light and relative humidity will recover. Another Santa Ana event, potentially a strong one, is likely Tuesday night through Thursday. Very dry and breezy conditions are then likely to continue into next weekend, keeping fire weather conditions elevated. * IMPACTS...If fire ignition occurs, conditions will be favorable for extreme fire behavior and rapid growth 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. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$ CAZ250-258-281245- /O.CON.KSGX.FW.A.0004.191030T0600Z-191101T0100Z/ San Diego County Inland Valleys-San Diego County Mountains- Including The Palomar And Descanso Ranger Districts of the Cleveland National Forest- 940 PM PDT Sun Oct 27 2019 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM TUESDAY EVENING THROUGH THURSDAY AFTERNOON FOR STRONG GUSTY WINDS AND LOW HUMIDITY FOR THE SAN DIEGO VALLEYS AND MOUNTAINS... * WINDS...Northeast to east 25 to 35 MPH with gusts to 60 MPH along the coastal slopes. * HUMIDITY...Single digits with very poor overnight recovery. * TIMING...Late Tuesday night through Thursday. * OUTLOOK...Very dry and breezy conditions are likely to continue into next weekend, keeping fire weather conditions elevated. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$ jmb
589 WWUS86 KSGX 281144 RFWSGX URGENT - FIRE WEATHER MESSAGE National Weather Service San Diego CA 444 AM PDT Mon Oct 28 2019 CAZ248-255>257-265-554-282330- /O.CON.KSGX.FW.W.0003.000000T0000Z-191029T0100Z/ /O.CON.KSGX.FW.A.0004.191030T0600Z-191101T0100Z/ San Bernardino and Riverside County Valleys - The Inland Empire- San Bernardino County Mountains- Including The Mountain Top And Front Country Ranger Districts Of The San Bernardino National Forest-Riverside County Mountains- Including The San Jacinto Ranger District Of The San Bernardino National Forest-Santa Ana Mountains- Including The Trabuco Ranger District of the Cleveland National Forest-San Gorgonio Pass Near Banning-Orange County Inland Areas- 444 AM PDT Mon Oct 28 2019 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM PDT THIS EVENING FOR STRONG GUSTY WINDS AND LOW HUMIDITY FOR FOR MOUNTAINS OF SAN BERNARDINO...RIVERSIDE...AND ORANGE COUNTIES...THE INLAND EMPIRE...AND INLAND ORANGE COUNTY... ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM TUESDAY EVENING THROUGH THURSDAY AFTERNOON FOR STRONG GUSTY WINDS AND LOW HUMIDITY FOR MOUNTAINS...VALLEYS...AND INLAND ORANGE COUNTY... The National Weather Service in San Diego has issued a Fire Weather Watch...which is in effect from Tuesday evening through Thursday afternoon. * WINDS THROUGH TODAY...Areas of northeast winds 20 to 30 mph with gusts to 55 mph. Gusts to 65 mph below the Cajon Pass and near the coastal slopes of the Santa Ana Mountains. * WINDS FOR LATE TUESDAY NIGHT THROUGH THURSDAY...Areas of northeast winds 25 to 35 mph with gusts to 65 mph. * HUMIDITY THROUGH TODAY...Lowest daytime humidity around 10 percent. * HUMIDITY FOR LATE TUESDAY NIGHT THROUGH THURSDAY...Lowest daytime humidity around 5 percent with poor overnight recovery. * TIMING FOR TODAY...winds becoming stronger and more widespread after sunrise, then subsiding during the late morning and afternoon. * TIMING FOR LATE TUESDAY NIGHT THROUGH THURSDAY...The strongest and most widespread winds are expected on Wednesday. * OUTLOOK...Winds will weaken for Friday through the weekend, but only slow recovery of the very low humidity with elevated fire weather conditions. * IMPACTS...If fire ignition occurs, conditions will be favorable for extreme fire behavior and rapid growth 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. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$ CAZ250-258-282330- /O.CON.KSGX.FW.A.0004.191030T0600Z-191101T0100Z/ San Diego County Inland Valleys-San Diego County Mountains- Including The Palomar And Descanso Ranger Districts of the Cleveland National Forest- 444 AM PDT Mon Oct 28 2019 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM TUESDAY EVENING THROUGH THURSDAY AFTERNOON FOR STRONG GUSTY WINDS AND LOW HUMIDITY FOR MOUNTAINS...VALLEYS...AND INLAND ORANGE COUNTY... * WINDS...Areas of northeast to east winds 25 to 35 mph with gusts to 65 mph. * HUMIDITY...Lowest daytime humidity around 5 percent with poor overnight recovery. * TIMING...The strongest and most widespread winds are expected on Wednesday. * OUTLOOK...Winds will weaken for Friday through the weekend, but only slow recovery of the very low humidity with elevated fire weather conditions. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$ 17
591 WWUS86 KSGX 282045 RFWSGX URGENT - FIRE WEATHER MESSAGE National Weather Service San Diego CA 145 PM PDT Mon Oct 28 2019 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM PDT THIS EVENING FOR STRONG GUSTY WINDS AND LOW HUMIDITY FOR THE MOUNTAINS OF SAN BERNARDINO...RIVERSIDE...AND ORANGE COUNTIES...THE INLAND EMPIRE...AND INLAND ORANGE COUNTY... ...RED FLAG WARNING IN EFFECT FROM 11 PM TUESDAY TO 6 PM PDT THURSDAY FOR STRONG GUSTY WINDS AND LOW HUMIDITY FOR THE MOUNTAINS OF SAN BERNARDINO...RIVERSIDE...AND ORANGE COUNTIES...THE INLAND EMPIRE...INLAND ORANGE COUNTY...INLAND SAN DIEGO COUNTY...AND THE SAN DIEGO COUNTY MOUNTAINS... A strong Santa Ana wind event will impact Southern California beginning Tuesday night and lasting through Thursday. This event will likely be the strongest of the season so far. Winds will increase out of the northeast to east with gusts of 50-70 mph forecast across the Santa Ana wind prone areas. Isolated wind gusts to 80 mph are possible in the mountains. The strong and potentially damaging winds, combined with extremely dry air, will create an extreme fire weather environment. CAZ248-255>257-265-554-290445- /O.UPG.KSGX.FW.A.0004.191030T0600Z-191101T0100Z/ /O.NEW.KSGX.FW.W.0004.191030T0600Z-191101T0100Z/ /O.CON.KSGX.FW.W.0003.000000T0000Z-191029T0100Z/ San Bernardino and Riverside County Valleys - The Inland Empire- San Bernardino County Mountains- Including The Mountain Top And Front Country Ranger Districts Of The San Bernardino National Forest-Riverside County Mountains- Including The San Jacinto Ranger District Of The San Bernardino National Forest-Santa Ana Mountains- Including The Trabuco Ranger District of the Cleveland National Forest-San Gorgonio Pass Near Banning-Orange County Inland Areas- 145 PM PDT Mon Oct 28 2019 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM PDT THIS EVENING FOR STRONG GUSTY WINDS AND LOW HUMIDITY FOR THE MOUNTAINS OF SAN BERNARDINO...RIVERSIDE...AND ORANGE COUNTIES...THE INLAND EMPIRE...AND INLAND ORANGE COUNTY... ...RED FLAG WARNING IN EFFECT FROM 11 PM TUESDAY TO 6 PM PDT THURSDAY FOR STRONG GUSTY WINDS AND LOW HUMIDITY FOR THE MOUNTAINS OF SAN BERNARDINO...RIVERSIDE...AND ORANGE COUNTIES...THE INLAND EMPIRE...AND INLAND ORANGE COUNTY...... The National Weather Service in San Diego has issued a Red Flag Warning...which is in effect from 11 PM Tuesday to 6 PM PDT Thursday. The Fire Weather Watch is no longer in effect. * WINDS THROUGH THIS AFTERNOON...Areas of northeast winds 15 TO 20 mph with gusts to 50 mph. * WINDS FOR LATE TUESDAY NIGHT THROUGH THURSDAY...Areas of northeast winds 20 to 40 mph with damaging wind gusts to 70 mph possible. Isolated gusts to 80 mph at the windiest foothill and canyon locations. * HUMIDITY THROUGH TODAY...Lowest daytime humidity 5 to 10 percent. * HUMIDITY FOR LATE TUESDAY NIGHT THROUGH THURSDAY...Lowest daytime humidity around 5 percent with poor overnight recovery. * TIMING FOR TODAY...winds will continue to gradually lessen throughout the afternoon. * TIMING FOR LATE TUESDAY NIGHT THROUGH THURSDAY...Winds will rapidly increase Tuesday night, especially after midnight, then remain strong through Thursday. The highest winds will occur during the late nights and morning hours. * OUTLOOK...Winds will weaken for Friday through the weekend, but very low humidity will remain, resulting in elevated fire weather conditions. * IMPACTS...If fire ignition occurs, conditions will be favorable for extreme fire behavior and rapid growth 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. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ CAZ250-258-290445- /O.UPG.KSGX.FW.A.0004.191030T0600Z-191101T0100Z/ /O.NEW.KSGX.FW.W.0004.191030T0600Z-191101T0100Z/ San Diego County Inland Valleys-San Diego County Mountains- Including The Palomar And Descanso Ranger Districts of the Cleveland National Forest- 145 PM PDT Mon Oct 28 2019 ...RED FLAG WARNING IN EFFECT FROM 11 PM TUESDAY TO 6 PM PDT THURSDAY FOR STRONG GUSTY WINDS AND LOW HUMIDITY FOR THE SAN DIEGO COUNTY MOUNTAINS AND INLAND VALLEYS... The National Weather Service in San Diego has issued a Red Flag Warning...which is in effect from 11 PM Tuesday to 6 PM PDT Thursday. The Fire Weather Watch is no longer in effect. * WINDS...Areas of east to northeast winds 20 to 40 mph with damaging wind gusts of 50 to 70 mph with the strongest gusts over the eastern valleys to the coastal mountain slopes. Isolated gusts to 80 mph on the windiest slopes. * HUMIDITY...Lowest daytime humidity around 5 percent with poor overnight recovery. * TIMING...Winds will increase Tuesday night, especially after midnight, then remain strong through Thursday. The highest winds will occur during the late nights and morning hours with the strongest winds forecast to occur late Wednesday night through Thursday morning. * OUTLOOK...Winds will weaken for Friday through the weekend, but very low humidity will remain, resulting in elevated fire weather conditions. * IMPACTS...If fire ignition occurs, conditions will be favorable for extreme fire behavior and rapid growth which would threaten life and property. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ Gregoria
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 San Diego, CA wrote its last area forecast discussion before this red flag warning went out at Oct 26, 9:31 AM PDT, 3 hours 48 minutes earlier.
Area forecast discussion, Oct 26, 9:31 AM PDT, 3 hours 48 minutes before
Area Forecast Discussion
National Weather Service San Diego CA
931 AM PDT Sat Oct 26 2019
.SYNOPSIS...
Mostly sunny and warm today, followed by much cooler weather Sunday
as a trough approaches from the north. The trough passes quickly
Sunday afternoon with gusty Santa Ana winds returning Sunday night
and Monday. It will be much cooler over the deserts, while
temperatures west of the mountains hover within a few degrees of
average. More gusty Santa Ana winds are expected midweek, followed
by quieter weather next weekend.
&&
.DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE...
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...
Most areas are trending a bit cooler this morning as the onshore
trends develop. As of 8 AM PDT...skies were clear and there were
still some light NE winds to 15 MPH. Dewpoints remain low inland,
but should trend upward later today. Expect another warm day, but
not as hot as yesterday as the onshore flow develops.
Sunday will be cooler. A strong shortwave over the Pacific Northwest
will dig a deep trough south across the Great Basin and bring a 24-
hour period of fairly strong onshore flow. A coastal eddy spins up
over outer waters Sunday morning and that will also contribute to
rapid marine layer deepening early Sunday morning. Low clouds will
move into the coastal zones shortly before sunrise and perhaps push
into the inland valleys through midday. The strong onshore flow
continues through the afternoon and there may even be a few pockets
of drizzle in San Diego County Sunday evening. Highs will be mostly
in the 70s west of the mountains, the 60s in the mountains and high
deserts, and the 80s in the lower deserts. The onshore gradients
will support gust west winds in the mountains and deserts Saturday
afternoon and evening.
Offshore flow returns Sunday night as the trough axis races
southeast into Arizona. This stronger offshore solution was
advertised by the ECMWF a couple days ago, whereas the GFS was
farther east with the trough and weaker with the offshore flow. A
1028 mb surface builds over northern Nevada bringing a burst of
colder north-northeast flow into SoCal Sunday night through Monday.
This offshore event will be as strong nor as widespread as the
Friday event, but still notable with northeast winds of 20 to 30
mph, with gusts to 50 mph, especially in Orange and San Bernardino
Counties.
After a respite Tuesday, another strong offshore wind event will
impact the area Wednesday and Thursday. As with the Sunday-Monday
system, the ECMWF ensemble mean has been consistently farther west
and more accurate with the trough digging over the Intermountain
west than the GFS. However, the most recent GEFS ensembles and the
00Z operational run are now more in line with the EC solutions.
Confidence is growing that we will be impacted by a strong Santa Ana
event Wednesday and Thursday.
&&
.AVIATION...
261600Z...Coastal Areas...Low clouds will form along the coast after
07Z Sunday, impacting coastal TAF sites after 09Z. Bases will be
around 400-700 ft MSL then will lift to around 1000 ft MSL after
12Z. Areas of visibility 1-3 miles possible in fog between 09Z and
15Z. Low clouds may persist throughout the day on Sunday, but
confidence is low for impacts at TAF sites after 15Z.
Otherwise, clear with unrestricted vis through Sunday.
&&
.MARINE...
Patchy dense fog may impact the coastal waters for a few hours
tonight into Sunday morning with visibility less than one mile
possible. Otherwise, no hazardous marine weather is expected through
Thursday.
&&
.FIRE WEATHER...
...FIRE WEATHER WATCH LATE SUNDAY THROUGH MONDAY...
Continued dry inland today with min RH values near 10% but winds
will be light. fire weather conditions remain elevated due to the
low RH and changing wind conditions and the sea breeze develops.
Winds will start to turn onshore this afternoon and accelerate
overnight as a strong coastal eddy develops. High RH values will
prevail west of the mts on Sunday as the marine layer deepens
rapidly with increasing onshore flow. Strong westerly winds of 30 to
40 MPH and gusts to 60 MPH will develop over the mtn crests and on
the desert slopes through early Sunday evening.
The winds will turn back offshore Sunday night and Monday, with
strong north to northeast winds of 30-50 MPH and peak gusts 65 to 75
MPH possible in the wind-prone areas of the Santa Ana Mts and
through and below the Cajon Pass. Winds will not be as strong as
they develop across San Diego County early Monday Morning with peak
gusts closer to 50 MPH probable on the wind-prone coastal slope
areas later in the morning. Offshore gusts of 25-30 MPH are possible
over far northern coastal San Diego and Orange Counties. Inland
Orange County could see northeast gusts of 40 MPH or more briefly
Monday morning. Minimum Rh values fall back to 5-10% in these areas.
A Fire Weather Watch is in effect for the valleys/mtns/inland O.C.
Wednesday and Thursday: Model consensus is improving and confidence
is growing that there will be another strong offshore wind event
during this time.
&&
.SKYWARN...
Skywarn activation is not requested.
&&
.SGX WATCHES/WARNINGS/ADVISORIES...
CA...Fire Weather Watch from Monday morning through Monday afternoon
for San Diego County Inland Valleys-San Diego County
Mountains-Including The Palomar And Descanso Ranger
Districts of the Cleveland National Forest.
Fire Weather Watch from Sunday evening through Monday afternoon
for Orange County Inland Areas-Riverside County Mountains-
Including The San Jacinto Ranger District Of The San
Bernardino National Forest-San Bernardino County Mountains-
Including The Mountain Top And Front Country Ranger
Districts Of The San Bernardino National Forest-San
Bernardino and Riverside County Valleys -The Inland Empire-
San Gorgonio Pass Near Banning-Santa Ana Mountains-
Including The Trabuco Ranger District of the Cleveland
National Forest.
PZ...NONE.
&&
PUBLIC...10/Moede/
FIRE WEATHER...10
AVIATION/MARINE..PGThe office that day
Everything else NWS San Diego, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 26, 11:29 AM PDT | High Wind Watch | SGX | Orange, Riverside, San Bernardino, San Diego | 16 hr |
| Oct 26, 11:29 AM PDT | High Wind Warning | SGX | San Diego | 31 hr |
| Oct 26, 11:29 AM PDT | Wind Advisory | SGX | Riverside, San Bernardino, San Diego | 31 hr |
Nearby
Red Flag Warnings in California, 2019Every red flag warning in 2019
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.