Alert archive / California / Red Flag Warnings in 2011
Red Flag Warning 5, NWS San Diego, CA
NWS San Diego, CA issued this red flag warning at Dec 4, 2011, 1:40 PM PST for 4 counties in California. It took effect at Dec 5, 2011, 6:00 AM PST. It was in force for 34 hr. 5 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 4, 2011, 1:40 PM PST (21:40 UTC)
- In effect from
- Dec 5, 2011, 6:00 AM PST
- Expired
- Dec 6, 2011, 4:00 PM PST
- In force
- 34 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 21:42 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 6, 1:00 AM PST | NON-TSTM WND GST 65 | 1 Wsw Cuyamaca Peak, CA | BOCSD BOULDER CREEK MESONET |
| Dec 6, 2:00 AM PST | NON-TSTM WND GST 56 | 5 Ese Cuyamaca Peak, CA | CUYAMACA STATE PARK MESONET SITE LFRSD LUCKY FIVE |
| Dec 6, 2:00 AM PST | NON-TSTM WND GST 58 | 4 Wnw Cuyamaca Peak, CA | NORTH BOULDER CREEK MESONET SITE NBCSD |
| Dec 6, 4:00 AM PST | NON-TSTM WND GST 52 | 6 Wnw Julian, CA | SANTA YSABEL RAWS |
| Dec 6, 4:00 AM PST | NON-TSTM WND GST 58 | 9 Ssw Mount Laguna, CA | BUCKMAN SPRINGS MESONET SITE BMSSD ON INTERSTATE 8 SOUTH OF PINE VALLEY |
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, 9.7 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
- 3013 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 171 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
391 WWUS86 KSGX 042140 RFWSGX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SAN DIEGO CA 140 PM PST SUN DEC 4 2011 ...STRONG GUSTY NORTH TO NORTHEAST WINDS AND LOW HUMIDITIES FOR MONDAY THROUGH TUESDAY... .A LOW PRESSURE SYSTEM MOVING SOUTHWARD THROUGH THE GREAT BASIN INTO ARIZONA WILL BRING STRONG GUSTY NORTH TO NORTHEAST WINDS AND LOW HUMIDITIES FOR EARLY MONDAY MORNING THROUGH TUESDAY. WEAKER NORTHEAST WINDS AND LOW HUMIDITIES WILL CONTINUE INTO THURSDAY. CAZ242-248-257-051400- /O.UPG.KSGX.FW.A.0004.111205T1400Z-111207T0000Z/ /O.NEW.KSGX.FW.W.0005.111205T1400Z-111207T0000Z/ ORANGE COUNTY COASTAL AREAS- SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE- SANTA ANA MOUNTAINS- INCLUDING THE TRABUCO RANGER DISTRICT OF THE CLEVELAND NATIONAL FOREST- 140 PM PST SUN DEC 4 2011 ...RED FLAG WARNING IN EFFECT FROM 6 AM MONDAY TO 4 PM PST TUESDAY 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 6 AM MONDAY TO 4 PM PST TUESDAY. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. * WINDS...NORTHEAST 20 TO 30 MPH WITH GUSTS TO 60 MPH. LOCAL GUSTS UP TO 70 MPH POSSIBLE THROUGH AND BELOW THE FAVORED CANYONS AND PASSES. * RELATIVE HUMIDITY...LOWEST DAYTIME AROUND 10 PERCENT WITH POOR OVERNIGHT RECOVERY. * TIMING...STRONGEST WINDS WILL DEVELOP EARLY MONDAY MORNING. ALTHOUGH THE WINDS WILL DECREASE SOME FOR MONDAY AFTERNOON AND EVENING...ANOTHER ROUND OF STRONGER WINDS WILL BE POSSIBLE LATE MONDAY NIGHT INTO TUESDAY MORNING...BEFORE DECREASING TUESDAY AFTERNOON. * OUTLOOK...WEAKER NORTHEAST WINDS...LOW DAYTIME HUMIDITIES...AND POOR OVERNIGHT RECOVERIES WILL CONTINUE THROUGH THURSDAY. 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. && $$ HTTP://WEATHER.GOV/SANDIEG0 PALMER
4 follow-up statements
265 WWUS86 KSGX 051057 RFWSGX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SAN DIEGO CA 257 AM PST MON DEC 5 2011 ...STRONG GUSTY NORTH TO NORTHEAST WINDS AND LOW HUMIDITIES THROUGH TUESDAY... .A LOW PRESSURE SYSTEM MOVING SOUTHWARD THROUGH THE GREAT BASIN INTO ARIZONA WILL BRING STRONG GUSTY NORTH TO NORTHEAST WINDS AND LOW HUMIDITIES THROUGH TUESDAY. WEAKER NORTHEAST WINDS AND LOW HUMIDITIES WILL CONTINUE INTO THURSDAY. CAZ242-248-257-052200- /O.CON.KSGX.FW.W.0005.111205T1400Z-111207T0000Z/ ORANGE COUNTY COASTAL AREAS- SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE- SANTA ANA MOUNTAINS- INCLUDING THE TRABUCO RANGER DISTRICT OF THE CLEVELAND NATIONAL FOREST- 257 AM PST MON DEC 5 2011 ...RED FLAG WARNING REMAINS IN EFFECT FROM 6 AM THIS MORNING TO 4 PM PST TUESDAY FOR STRONG GUSTY WINDS AND LOW HUMIDITIES... A RED FLAG WARNING REMAINS IN EFFECT FROM 6 AM THIS MORNING TO 4 PM PST TUESDAY. * WINDS...NORTHEAST 20 TO 30 MPH TODAY WITH GUSTS TO 60 MPH THROUGH AND BELOW PASSES AND CANYONS AND NEAR COASTAL FOOTHILLS...BECOMING 15 TO 25 MPH WITH GUSTS TO 45 MPH TONIGHT AND TUESDAY...DIMINISHING TUESDAY AFTERNOON. * RELATIVE HUMIDITY...LOWEST DAYTIME AROUND 10 PERCENT WITH POOR OVERNIGHT RECOVERY. * OUTLOOK...WEAKER NORTHEAST WINDS...LOW DAYTIME HUMIDITIES... AND POOR OVERNIGHT RECOVERIES WILL CONTINUE THROUGH THURSDAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ HTTP://WEATHER.GOV/SANDIEG0 MARTIN
080 WWUS86 KSGX 052125 RFWSGX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SAN DIEGO CA 125 PM PST MON DEC 5 2011 ...STRONG GUSTY NORTH TO NORTHEAST WINDS AND LOW HUMIDITIES THROUGH TUESDAY... .BUILDING SURFACE HIGH PRESSURE OVER THE GREAT BASIN AND AN EXITING TROUGH OVER THE SOUTHERN ROCKIES WILL CONTINUE STRONG GUSTY NORTH TO NORTHEAST WINDS AND LOW HUMIDITIES THROUGH TUESDAY. WEAKER NORTHEAST WINDS AND LOW HUMIDITIES WILL CONTINUE INTO THURSDAY. CAZ242-248-257-061200- /O.CON.KSGX.FW.W.0005.000000T0000Z-111207T0000Z/ ORANGE COUNTY COASTAL AREAS- SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE- SANTA ANA MOUNTAINS- INCLUDING THE TRABUCO RANGER DISTRICT OF THE CLEVELAND NATIONAL FOREST- 125 PM PST MON DEC 5 2011 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 4 PM PST TUESDAY FOR STRONG GUSTY WINDS AND LOW HUMIDITIES... A RED FLAG WARNING REMAINS IN EFFECT UNTIL 4 PM PST TUESDAY. * WINDS...NORTHEAST 15 TO 25 MPH WITH GUSTS TO 45 MPH THIS AFTERNOON THROUGH TUESDAY...DIMINISHING TUESDAY AFTERNOON. * RELATIVE HUMIDITY...LOWEST DAYTIME AROUND 10 PERCENT WITH POOR OVERNIGHT RECOVERY. * OUTLOOK...WEAKER NORTHEAST WINDS...LOW DAYTIME HUMIDITIES... AND POOR OVERNIGHT RECOVERIES WILL CONTINUE THROUGH THURSDAY. 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. && $$ MAXWELL
509 WWUS86 KSGX 061135 RFWSGX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SAN DIEGO CA 335 AM PST TUE DEC 6 2011 ...STRONG NORTHEAST WINDS AND LOW HUMIDITY TODAY... .STRONG AND GUSTY NORTHEAST WINDS WILL CONTINUE TODAY AND DECREASE THIS AFTERNOON. THESE WINDS WILL COMBINE WITH HUMIDITY THAT WILL DROP TO BETWEEN 10 AND 20 PERCENT ACROSS MANY MOUNTAINS AND VALLEYS...AND EVEN CLOSE TO THE COAST. WINDS WILL DECREASE THIS AFTERNOON AND EVENING AND ALLOW HUMIDITY TO RECOVER SLIGHTLY BETTER TONIGHT. CAZ242-248-257-070000- /O.CON.KSGX.FW.W.0005.000000T0000Z-111207T0000Z/ ORANGE COUNTY COASTAL AREAS- SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE- SANTA ANA MOUNTAINS- INCLUDING THE TRABUCO RANGER DISTRICT OF THE CLEVELAND NATIONAL FOREST- 335 AM PST TUE DEC 6 2011 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 4 PM PST THIS AFTERNOON FOR STRONG GUSTY WINDS AND LOW HUMIDITY... A RED FLAG WARNING REMAINS IN EFFECT UNTIL 4 PM PST THIS AFTERNOON. * WINDS...NORTHEAST 15 TO 25 MPH WITH GUSTS TO 50 MPH. * RELATIVE HUMIDITY...LOWEST DAYTIME AROUND 10 TO 15 PERCENT. * OUTLOOK...WEAKER NORTHEAST WINDS...LOW DAYTIME HUMIDITY...AND POOR OVERNIGHT RECOVERIES WILL CONTINUE THROUGH THURSDAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS AND LOW RELATIVE HUMIDITY WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ MM
494 WWUS86 KSGX 070003 RFWSGX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SAN DIEGO CA 403 PM PST TUE DEC 6 2011 ...RED FLAG WARNING HAS EXPIRED... CAZ242-248-257-070115- /O.EXP.KSGX.FW.W.0005.000000T0000Z-111207T0000Z/ ORANGE COUNTY COASTAL AREAS- SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE- SANTA ANA MOUNTAINS- INCLUDING THE TRABUCO RANGER DISTRICT OF THE CLEVELAND NATIONAL FOREST- 403 PM PST TUE DEC 6 2011 ...RED FLAG WARNING HAS EXPIRED... THE RED FLAG WARNING IS NO LONGER IN EFFECT. EAST WINDS IN AND BELOW THE MOUNTAIN PASSES WILL CONTINUE TO DECREASE THROUGH THE EVENING. $$ MOEDE
The office that day
Everything else NWS San Diego, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 3, 4:55 PM PST | Frost Advisory | SGX | Riverside, San Bernardino, San Diego | 15 hr |
| Dec 4, 1:22 AM PST | Frost Advisory | SGX | Riverside, San Bernardino, San Diego | 31 hr |
| Dec 4, 1:22 AM PST | High Wind Watch | SGX | Orange, Riverside, San Bernardino, San Diego | 12 hr |
| Dec 4, 1:35 PM PST | High Wind Warning | SGX | Orange, Riverside, San Bernardino, San Diego | 24 hr |
| Dec 4, 1:35 PM PST | Wind Advisory | SGX | Orange, Riverside, San Bernardino, San Diego | 48 hr |
Nearby
Red Flag Warnings in California, 2011Every red flag warning in 2011
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.