Alert archive / California / Red Flag Warnings in 2012
Red Flag Warning 1, NWS San Diego, CA
NWS San Diego, CA issued this red flag warning at Jan 7, 2012, 3:37 AM PST for 4 counties in California. It took effect at Jan 8, 2012, 8:00 AM PST. It was in force for 10 hr. 6 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
- Jan 7, 2012, 3:37 AM PST (11:37 UTC)
- In effect from
- Jan 8, 2012, 8:00 AM PST
- Expired
- Jan 8, 2012, 6:00 PM PST
- In force
- 10 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 11:41 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 |
|---|---|---|---|
| Jan 8, 8:17 AM PST | NON-TSTM WND GST 0 | 2 S Crestline, CA | CHP REPORTED A TREE BLOCKING OLD WATERMAN CANYON ROAD JUST SOUTH OF SR-18. |
| Jan 8, 9:42 AM PST | NON-TSTM WND DMG | 2 W Crestline, CA | CHP REPORTED A POWERLINE DOWN IN THE ROAD NEAR THE INTERSECTION OF RATE RD AND LOVERS LN. |
| Jan 8, 10:24 AM PST | NON-TSTM WND DMG | 3 Ene Ontario, CA | CHP REPORTED AN OVERTURNED BIG RIG ON I-10 NEAR THE N VINEYARD AVE EXIT. KONT WIND GUST OF 36 MPH AT 953 AM. |
| Jan 8, 10:24 AM PST | NON-TSTM WND DMG | 3 Wnw Ontario, CA | CHP REPORTED AN OVERTURNED BIG RIG ON I-10 NEAR THE N VINEYARD AVE EXIT. KONT WIND GUST OF 36 MPH AT 953 AM. |
| Jan 8, 10:45 AM PST | DUST STORM | 25 W Blythe, CA | SPOTTER REPORT OF BLOWING DUST ON INTERSTATE 10 WEST OF BLYTHE THROUGH DESERT CENTER. VISIBILITIES AT OR LESS THAN A QUARTER OF A MILE AT TIMES. |
| Jan 8, 11:00 AM PST | DUST STORM | 7 W Blythe, CA | RIVERSIDE COUNTY FIRE STATION REPORT CONFIRMS BLOWING DUST AND SAND REDUCING VISIBILITY ALONG INTERSTATE 10. POOR VISIBILITY AT THE STATION THROUGH DESERT CENTER. |
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 00:00Z, 11.6 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
- 4005 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 10 m²/s²
- 0-3 km storm-relative helicity
- 5 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
522 WWUS86 KSGX 071137 RFWSGX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SAN DIEGO CA 337 AM PST SAT JAN 7 2012 ...RED FLAG WARNING FROM 8 AM TO 6 PM SUNDAY FOR ORANGE COUNTY COASTAL AREAS...THE SANTA ANA MOUNTAINS...THE INLAND EMPIRE...AND THE SAN BERNARDINO COUNTY MOUNTAINS... .SURFACE HIGH PRESSURE OVER THE GREAT BASIN AND UPPER LEVEL LOW PRESSURE OVER THE SOUTHERN ROCKIES WILL BRING MODERATE TO STRONG NORTHEAST WINDS AND MUCH LOWER HUMIDITIES FOR LATE TONIGHT THROUGH SUNDAY WITH STRONGEST WINDS THROUGH AND BELOW PASSES AND CANYONS. NORTHEAST WINDS WILL DECREASE SOMEWHAT AND CONTINUE FOR SUNDAY NIGHT INTO MONDAY MORNING. CAZ242-248-255-257-072200- /O.UPG.KSGX.FW.A.0001.120108T1600Z-120109T0000Z/ /O.NEW.KSGX.FW.W.0001.120108T1600Z-120109T0200Z/ ORANGE COUNTY COASTAL AREAS- 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-SANTA ANA MOUNTAINS- INCLUDING THE TRABUCO RANGER DISTRICT OF THE CLEVELAND NATIONAL FOREST- 337 AM PST SAT JAN 7 2012 ...RED FLAG WARNING IN EFFECT FROM 8 AM TO 6 PM PST SUNDAY FOR STRONG GUSTY WINDS AND LOW HUMIDITIES... THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A RED FLAG WARNING FOR STRONG GUSTY WINDS AND LOW HUMIDITIES...WHICH IS IN EFFECT FROM 8 AM TO 6 PM PST SUNDAY. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. * WINDS...NORTHEAST 20 TO 30 MPH WITH GUSTS TO 65 MPH. STRONGEST WINDS ARE EXPECTED THROUGH SUNDAY MORNING WITH WINDS GRADUALLY DECREASING SUNDAY AFTERNOON. * RELATIVE HUMIDITY...LOWEST DAYTIME AROUND 10 PERCENT WITH POOR OVERNIGHT RECOVERY. * OUTLOOK...FOR SUNDAY NIGHT AND MONDAY...POOR OVERNIGHT RECOVERY OF HUMIDITIES WITH LOWEST DAYTIME HUMIDITIES MONDAY AROUND 10 PERCENT. NORTHEAST WINDS WILL BE WEAKER...15 TO 25 MPH WITH GUSTS TO 45 MPH. 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 WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ HTTP://WEATHER.GOV/SANDIEG0 MARTIN
5 follow-up statements
159 WWUS86 KSGX 072125 RFWSGX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SAN DIEGO CA 125 PM PST SAT JAN 7 2012 ...RED FLAG WARNING FROM 8 AM TO 6 PM SUNDAY FOR ORANGE COUNTY COASTAL AREAS...THE SANTA ANA MOUNTAINS...THE INLAND EMPIRE...AND THE SAN BERNARDINO COUNTY MOUNTAINS... .SURFACE HIGH PRESSURE OVER THE GREAT BASIN AND UPPER LEVEL LOW PRESSURE OVER THE SOUTHERN ROCKIES WILL BRING MODERATE TO STRONG NORTHEAST WINDS AND MUCH LOWER HUMIDITIES SUNDAY WITH STRONGEST WINDS THROUGH AND BELOW PASSES AND CANYONS. NORTHEAST WINDS WILL DECREASE SOMEWHAT AND CONTINUE FOR SUNDAY NIGHT INTO MONDAY MORNING. CAZ242-248-255-257-081100- /O.CON.KSGX.FW.W.0001.120108T1600Z-120109T0200Z/ ORANGE COUNTY COASTAL AREAS- SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE- SAN BERNARDINO COUNTY MOUNTAINS- INCLUDING THE MOUNTAIN TOP AND FRONT COUNTRY RANGER DISTRICTS OF THE SAN BERNARDINO NATIONAL FOREST-SANTA ANA MOUNTAINS- INCLUDING THE TRABUCO RANGER DISTRICT OF THE CLEVELAND NATIONAL FOREST- 125 PM PST SAT JAN 7 2012 ...RED FLAG WARNING REMAINS IN EFFECT FROM 8 AM TO 6 PM PST SUNDAY FOR STRONG WINDS AND LOW HUMIDITY... A RED FLAG WARNING REMAINS IN EFFECT FROM 8 AM TO 6 PM PST SUNDAY. * WINDS...NORTHEAST 20 TO 30 MPH WITH GUSTS TO 60 MPH. * RELATIVE HUMIDITY...LOWEST DAYTIME AROUND 10 PERCENT WITH POOR OVERNIGHT RECOVERY. * OUTLOOK...FOR SUNDAY NIGHT AND MONDAY...POOR OVERNIGHT RECOVERY OF HUMIDITIES WITH LOWEST DAYTIME HUMIDITIES MONDAY AROUND 10 PERCENT. NORTHEAST WINDS WILL BE WEAKER...15 TO 25 MPH WITH GUSTS TO 45 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ MM
428 WWUS86 KSGX 080350 RFWSGX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SAN DIEGO CA 750 PM PST SAT JAN 7 2012 ...RED FLAG WARNING FROM 8 AM TO 6 PM SUNDAY FOR ORANGE COUNTY COASTAL AREAS...THE SANTA ANA MOUNTAINS...THE INLAND EMPIRE...AND THE SAN BERNARDINO COUNTY MOUNTAINS FOR STRONG GUSTY WINDS AND LOW RELATIVE HUMIDITY... .SURFACE HIGH PRESSURE OVER THE GREAT BASIN AND UPPER LEVEL LOW PRESSURE OVER THE SOUTHERN ROCKIES WILL GENERATE MODERATE TO STRONG NORTHEAST WINDS AND VERY LOW HUMIDITIES SUNDAY. WINDS WILL BE STRONGEST THROUGH AND BELOW THE PASSES AND CANYONS OF THE SAN BERNARDINO AND SANTA ANA MOUNTAINS...EXTENDING INTO THE INLAND EMPIRE AND INLAND PORTIONS OF THE ORANGE COUNTY COASTAL AREAS. DAYTIME HUMIDITY WILL BE IN THE LOW TEENS WITH POOR OVERNIGHT RECOVERY IN THE WIND PRONE AREAS. NORTHEAST WINDS WILL DECREASE SUNDAY AFTERNOON WITH LOCALLY BREEZY CONDITIONS CONTINUING INTO MONDAY MORNING. CAZ242-248-255-257-081400- /O.CON.KSGX.FW.W.0001.120108T1600Z-120109T0200Z/ ORANGE COUNTY COASTAL AREAS- 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-SANTA ANA MOUNTAINS- INCLUDING THE TRABUCO RANGER DISTRICT OF THE CLEVELAND NATIONAL FOREST- 750 PM PST SAT JAN 7 2012 ...RED FLAG WARNING REMAINS IN EFFECT FROM 8 AM TO 6 PM PST SUNDAY FOR STRONG WINDS AND LOW HUMIDITY... A RED FLAG WARNING REMAINS IN EFFECT FROM 8 AM TO 6 PM PST SUNDAY. * WINDS...NORTHEAST 20 TO 30 MPH WITH GUSTS TO 50 MPH. LOCAL GUSTS TO 65 MPH THROUGH AND BELOW THE WIND PRONE PASSES AND CANYONS. * RELATIVE HUMIDITY...LOWEST DAYTIME AROUND 10 PERCENT WITH POOR OVERNIGHT RECOVERY. * OUTLOOK...FOR SUNDAY NIGHT AND MONDAY...POOR OVERNIGHT RECOVERY OF HUMIDITIES WITH LOWEST DAYTIME HUMIDITIES MONDAY AROUND 10 PERCENT. NORTHEAST WINDS WILL BE WEAKER...15 TO 25 MPH WITH LOCAL GUSTS TO 45 MPH. 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 WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ SS
064 WWUS86 KSGX 081109 RFWSGX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SAN DIEGO CA 309 AM PST SUN JAN 8 2012 ...RED FLAG WARNING FROM 8 AM TO 6 PM TODAY FOR ORANGE COUNTY COASTAL AREAS...THE SANTA ANA MOUNTAINS...THE INLAND EMPIRE...AND THE SAN BERNARDINO COUNTY MOUNTAINS FOR STRONG GUSTY WINDS AND LOW RELATIVE HUMIDITIES... .SURFACE HIGH PRESSURE OVER THE GREAT BASIN AND UPPER LEVEL LOW PRESSURE OVER THE SOUTHERN ROCKIES WILL BRING MODERATE TO STRONG NORTHEAST TO EAST WINDS AND VERY LOW HUMIDITIES TODAY. WINDS WILL BE STRONGEST THROUGH AND BELOW THE PASSES AND CANYONS OF THE SAN BERNARDINO AND SANTA ANA MOUNTAINS...EXTENDING INTO THE INLAND EMPIRE AND INLAND PORTIONS OF THE ORANGE COUNTY COASTAL AREAS. LOWEST DAYTIME HUMIDITIES WILL FALL BELOW 10 PERCENT WITH POOR OVERNIGHT RECOVERY IN THE WIND PRONE AREAS. NORTHEAST WINDS WILL DECREASE THIS AFTERNOON WITH LOCALLY BREEZY CONDITIONS CONTINUING INTO MONDAY MORNING. CAZ242-248-255-257-090200- /O.CON.KSGX.FW.W.0001.120108T1600Z-120109T0200Z/ ORANGE COUNTY COASTAL AREAS- 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-SANTA ANA MOUNTAINS- INCLUDING THE TRABUCO RANGER DISTRICT OF THE CLEVELAND NATIONAL FOREST- 309 AM PST SUN JAN 8 2012 ...RED FLAG WARNING REMAINS IN EFFECT FROM 8 AM THIS MORNING TO 6 PM PST THIS EVENING FOR STRONG GUSTY WINDS AND LOW HUMIDITIES... A RED FLAG WARNING REMAINS IN EFFECT FROM 8 AM THIS MORNING TO 6 PM PST THIS EVENING. * WINDS...NORTHEAST 20 TO 30 MPH WITH GUSTS TO 65 MPH. * RELATIVE HUMIDITY...LOWEST DAYTIME AROUND 10 PERCENT WITH POOR OVERNIGHT RECOVERY. * OUTLOOK...FOR TONIGHT AND MONDAY...POOR OVERNIGHT RECOVERY OF HUMIDITIES WITH LOWEST DAYTIME HUMIDITIES MONDAY AROUND 10 PERCENT. NORTHEAST WINDS WILL BE WEAKER...15 TO 25 MPH WITH LOCAL GUSTS TO 40 MPH. 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 WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ HTTP://WEATHER.GOV/SANDIEG0 MARTIN
324 WWUS86 KSGX 081618 RFWSGX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SAN DIEGO CA 818 AM PST SUN JAN 8 2012 ...RED FLAG WARNING UNTIL 6 PM TODAY FOR ORANGE COUNTY COASTAL AREAS...THE SANTA ANA MOUNTAINS...THE INLAND EMPIRE...AND THE SAN BERNARDINO COUNTY MOUNTAINS FOR STRONG GUSTY WINDS AND LOW RELATIVE HUMIDITIES... .SURFACE HIGH PRESSURE OVER THE GREAT BASIN AND UPPER LEVEL LOW PRESSURE OVER THE SOUTHERN ROCKIES WILL BRING MODERATE TO STRONG NORTHEAST TO EAST WINDS AND VERY LOW HUMIDITIES TODAY. WINDS WILL BE STRONGEST THROUGH AND BELOW THE PASSES AND CANYONS OF THE SAN BERNARDINO AND SANTA ANA MOUNTAINS...EXTENDING INTO THE INLAND EMPIRE AND INLAND PORTIONS OF THE ORANGE COUNTY COASTAL AREAS. LOWEST DAYTIME HUMIDITIES WILL FALL BELOW 10 PERCENT WITH POOR OVERNIGHT RECOVERY IN THE WIND PRONE AREAS. NORTHEAST WINDS WILL DECREASE THIS AFTERNOON WITH LOCALLY BREEZY CONDITIONS CONTINUING INTO MONDAY MORNING. CAZ242-248-255-257-090200- /O.CON.KSGX.FW.W.0001.000000T0000Z-120109T0200Z/ ORANGE COUNTY COASTAL AREAS- 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-SANTA ANA MOUNTAINS- INCLUDING THE TRABUCO RANGER DISTRICT OF THE CLEVELAND NATIONAL FOREST- 818 AM PST SUN JAN 8 2012 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM PST THIS EVENING FOR STRONG WINDS AND LOW RELATIVE HUMIDITY... A RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM PST THIS EVENING. * WINDS...NORTHEAST 20 TO 30 MPH WITH GUSTS TO 65 MPH. * RELATIVE HUMIDITY...LOWEST DAYTIME AROUND 10 PERCENT WITH POOR OVERNIGHT RECOVERY. * OUTLOOK...FOR TONIGHT AND MONDAY...POOR OVERNIGHT RECOVERY OF HUMIDITIES WITH LOWEST DAYTIME HUMIDITIES MONDAY AROUND 10 PERCENT. NORTHEAST WINDS WILL BE WEAKER...15 TO 25 MPH WITH LOCAL GUSTS TO 40 MPH. 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 WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ MM
955 WWUS86 KSGX 090155 RFWSGX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SAN DIEGO CA 555 PM PST SUN JAN 8 2012 CAZ242-248-255-257-090300- /O.EXP.KSGX.FW.W.0001.000000T0000Z-120109T0200Z/ ORANGE COUNTY COASTAL AREAS- SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE- SAN BERNARDINO COUNTY MOUNTAINS- INCLUDING THE MOUNTAIN TOP AND FRONT COUNTRY RANGER DISTRICTS OF THE SAN BERNARDINO NATIONAL FOREST-SANTA ANA MOUNTAINS- INCLUDING THE TRABUCO RANGER DISTRICT OF THE CLEVELAND NATIONAL FOREST- 555 PM PST SUN JAN 8 2012 ...RED FLAG WARNING WILL EXPIRE AT 6 PM PST THIS EVENING FOR STRONG GUSTY WINDS AND LOW HUMIDITIES... THE RED FLAG WARNING WILL EXPIRE AT 6 PM PST THIS EVENING. WIND GUSTS HAVE DECREASED BELOW 35 MPH THIS EVENING AND THE RED FLAG WARNING WILL BE ALLOWED TO EXPIRE AT 6 PM. LOCAL GUSTY NORTHEAST TO EAST WINDS AND POOR HUMIDITY RECOVERY IS EXPECTED TO CONTINUE THROUGH MONDAY...MAINLY NEAR THE FOOTHILLS AND THROUGH AND BELOW THE WIND PRONE PASSES AND CANYONS. $$ SS
The office that day
Everything else NWS San Diego, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 7, 3:28 AM PST | High Wind Warning | SGX | Orange, Riverside, San Bernardino, San Diego | 32 hr |
| Jan 7, 3:28 AM PST | Wind Advisory | SGX | Orange, Riverside, San Bernardino, San Diego | 37 hr |
Nearby
Red Flag Warnings in California, 2012Every red flag warning in 2012
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.