Alert archive / California / Red Flag Warnings in 2011
Red Flag Warning 4, NWS San Diego, CA
NWS San Diego, CA issued this red flag warning at Nov 30, 2011, 1:30 PM PST for 4 counties in California. It took effect at Nov 30, 2011, 10:00 PM PST. It was in force for 29 hr. 20 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
- Nov 30, 2011, 1:30 PM PST (21:30 UTC)
- In effect from
- Nov 30, 2011, 10:00 PM PST
- Expired
- Dec 2, 2011, 2:43 AM PST
- In force
- 29 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 21:30 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 1, 2:39 AM PST | SNOW 0 | Big Bear City, CA | 3 TO 4 INCHES OF SNOW CONTINUING TO FALL. |
| Dec 1, 2:39 AM PST | SNOW 4 | Big Bear City, CA | SNOW CONTINUING TO FALL. |
| Dec 1, 3:00 AM PST | NON-TSTM WND GST 55 | 1 E Ontario, CA | VISIBILITY WAS REDUCED TO 3SM IN BLOWING DUST DUE TO THE STRONG WINDS. |
| Dec 1, 3:43 AM PST | NON-TSTM WND DMG | San Bernardino, CA | LARGE TREE BRANCH BLOCKING THE ON RAMP TO STATE ROUTE 210 AT WATERMAN AVE. |
| Dec 1, 4:00 AM PST | NON-TSTM WND GST 56 | San Bernardino, CA | |
| Dec 1, 4:46 AM PST | NON-TSTM WND DMG | 3 Nw Fontana, CA | BIG RIG OVERTURNED IN THE CENTER DIVIDE OF HIGHWAY 210 AT BEECH AVENUE BLOCKING THE HOV LANE. REPORT CITES EXTREME WINDS. LANES CLOSED UNTIL 0930 PST WHEN TRUCK WAS UPRIGHTED. |
| Dec 1, 4:50 AM PST | HIGH SUST WINDS 40 | San Bernardino, CA | HIGH WINDS BEGAN AT THE CAL STATE SAN BERNARDINO MESONET STATION BETWEEN 0350 AND 0450 PST. DURING THIS TIME SUSTAINED WINDS OF 40 MPH WERE RECORDED ALONG WITH GUSTS OF 47 AND 53 MPH. HIGH WINDS ENDED BETWEEN 0450 AND 0550 PST. |
| Dec 1, 5:31 AM PST | SNOW 3.2 | 11 Se Big Bear City, CA | 3.25 INCHES OF SNOW. SNOW CONTINUING TO FALL AT ONYX PEAK 8000 FEET ELEVATION. |
| Dec 1, 5:31 AM PST | SNOW 31 | 11 Se Big Bear City, CA | 31/4 INCHES OF SNOW CONTINUING TO FALL AT ONYX PEAK 8000 FEET ELEVATION. |
| Dec 1, 5:51 AM PST | HIGH SUST WINDS 49 | San Bernardino, CA | THE PALM AVENUE ELEMENTARY WEATHER STATION RECORDED SUSTAINED NORTHEAST WINDS OF 49 MPH AROUND 0700 PST. A MAX WIND GUST OF 70 MPH WAS RECORDED AT THE SAME STATION AT 0551 PST. |
| Dec 1, 6:26 AM PST | NON-TSTM WND DMG | 1 Se Mentone, CA | POWER POLES DOWN ACROSS THE WHOLE STREET ON 3RD AVENUE NEAR THE CRAFTON RESERVOIR. CARS WERE DRIVING OVER THE LINES UNTIL FIRE AND POLICE ARRIVED TO BLOCK OFF THE ROADWAY. ETA FROM EDISON UNKNOWN. |
| Dec 1, 6:46 AM PST | NON-TSTM WND DMG | 4 Nw San Bernardino, CA | BOX TRUCK ON ITS SIDE IN THE SLOW LANE OF INTERSTATE 15 NEAR GLEN HELEN PARKWAY. |
| Dec 1, 7:10 AM PST | NON-TSTM WND DMG | 3 Ne Rancho Cucamonga, CA | SLOW LANE OF HIGHWAY 210 AT DAY CREEK BLVD CLOSED FOR APPROXIMATELY ONE HOUR TO UPRIGHT A SEMI TRUCK. |
| Dec 1, 7:44 AM PST | NON-TSTM WND DMG | 3 Ese Crestline, CA | POWER LINES ARE DOWN ACROSS CREST FOREST DRIVE AT SCENIC DRIVE NEAR RIMFOREST. |
| Dec 1, 7:44 AM PST | NON-TSTM WND DMG | 4 Ne San Bernardino, CA | POWER LINES ARE DOWN IN THE LANES OF EDGEMONT DRIVE NEAR SAN BERNARDINO. A TREE IS ALSO DOWN. |
| Dec 1, 8:24 AM PST | NON-TSTM WND DMG | Rancho Cucamonga, CA | MULTIPLE BIG TREES DOWN BLOCKING ROADWAYS, AS WELL AS FENCES DOWN. |
| Dec 1, 10:24 AM PST | NON-TSTM WND GST 60 | 13 S Red-Pass-Lake (Clr, CA | CALIFORNIA HIGHWAY PATROL ESTIMATED 40 TO 60 MPH WINDS ALONG INTERSTATE 15 FROM BARSTOW TO BAKER. |
| Dec 1, 5:30 PM PST | NON-TSTM WND GST 58 | Fremont Canyon, CA | AT 451 PM FREMONT CANYON REPORTS SUSTAINED NORTHEAST WINDS OF 32 MPH GUSTING TO 58 MPH. |
| Dec 1, 5:30 PM PST | HEAVY SNOW 11 | Big Bear Lake, CA | BIG BEAR LAKE MEASURED SNOW TOTAL OF 11 INCHES AT 5 PM WITH DRIFTS OF 1-2 FEET. |
| Dec 1, 11:26 PM PST | SNOW 18 | Big Bear Lake, CA | SNOW TOTAL 18 INCHES. STILL SNOWING HEAVILY. SNOW DRIFTS 2 TO 3 FEET DEEP. |
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, 9.5 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
- 3365 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 45 m²/s²
- 0-3 km storm-relative helicity
- 58 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
618 WWUS86 KSGX 302130 RFWSGX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SAN DIEGO CA 130 PM PST WED NOV 30 2011 ...VERY STRONG AND GUSTY NORTH TO NORTHEAST WINDS LATE THIS EVENING THROUGH FRIDAY... .A VERY COLD AND STRONG UPPER LEVEL LOW WILL DIG SOUTHWARD OVER THE GREAT BASIN AND DEEPEN INTO THE LOWER COLORADO RIVER BASIN THROUGH FRIDAY...BRINGING VERY STRONG AND GUSTY NORTH TO NORTHEAST WINDS AS WELL AS MUCH COLDER AIR TO SOUTHERN CALIFORNIA LATE THIS EVENING THROUGH FRIDAY. DEPENDING ON THE TRACK OF THIS SYSTEM...IT COULD ALSO BRING SOME SHOWERS...SNOW SHOWERS...AND THUNDERSTORMS TO PORTIONS OF THE REGION THURSDAY AND FRIDAY. CAZ255-302230- /O.CAN.KSGX.FW.A.0002.111201T0600Z-111202T2300Z/ SAN BERNARDINO COUNTY MOUNTAINS- INCLUDING THE MOUNTAIN TOP AND FRONT COUNTRY RANGER DISTRICTS OF THE SAN BERNARDINO NATIONAL FOREST- 130 PM PST WED NOV 30 2011 ...FIRE WEATHER WATCH IS CANCELLED FOR STRONG GUSTY WINDS AND MARGINAL HUMIDITIES... THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS CANCELLED THE FIRE WEATHER WATCH. ALTHOUGH VERY STRONG AND GUSTY WINDS WILL BE POSSIBLE OVER THE RIDGE TOPS AND THROUGH AND BELOW THE CANYONS AND PASSES OF THE SAN BERNARDINO MOUNTAINS...HUMIDITIES WILL INCREASE SUCH THAT SHOWERS AND SNOW SHOWERS WILL BE POSSIBLE FOR THURSDAY THROUGH FRIDAY. SOME OF THESE STRONG SHOWERS MAY ALSO GENERATE WETTING RAINS...WITH A COUPLE OF INCHES OF SNOW POSSIBLE ABOVE 3500 FEET. $$ CAZ242-248-257-011315- /O.UPG.KSGX.FW.A.0002.111201T0600Z-111202T2300Z/ /O.NEW.KSGX.FW.W.0004.111201T0600Z-111202T2300Z/ ORANGE COUNTY COASTAL AREAS- SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE- SANTA ANA MOUNTAINS- INCLUDING THE TRABUCO RANGER DISTRICT OF THE CLEVELAND NATIONAL FOREST- 130 PM PST WED NOV 30 2011 ...RED FLAG WARNING IN EFFECT FROM 10 PM THIS EVENING TO 3 PM PST FRIDAY FOR STRONG GUSTY WINDS AND MARGINAL HUMIDITIES... THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A RED FLAG WARNING FOR STRONG GUSTY WINDS AND MARGINAL HUMIDITIES...WHICH IS IN EFFECT FROM 10 PM THIS EVENING TO 3 PM PST FRIDAY. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. * WINDS...NORTH TO NORTHEAST WINDS 25 TO 45 MPH...WITH GUSTS UP TO 70 MPH POSSIBLE. LOCAL GUSTS UP TO 80 MPH WILL BE POSSIBLE THROUGH AND BELOW THE FAVORED CANYONS AND PASSES. * RELATIVE HUMIDITY...LOWEST HUMIDITIES WILL RANGE BETWEEN 15 AND 30 PERCENT. HOWEVER...THIS STORM COULD BRING HIGHER HUMIDITIES TO PORTIONS OF THE INLAND EMPIRE AND THE SANTA ANA MOUNTAINS AND FOOTHILL ALONG WITH A SLIGHT CHANCE OF SHOWERS THURSDAY THROUGH FRIDAY. * TIMING...STRONG AND GUSTY NORTH TO NORTHEAST WINDS WILL DEVELOP THIS EVENING AND LAST INTO FRIDAY...WITH THE STRONGEST WIND GUSTS OCCURRING ON THURSDAY MORNING AND AGAIN ON FRIDAY MORNING. * OUTLOOK...WINDS WILL DECREASE ON FRIDAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ HTTP://WEATHER.GOV/SANDIEG0
3 follow-up statements
781 WWUS86 KSGX 011152 RFWSGX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SAN DIEGO CA 352 AM PST THU DEC 1 2011 ...VERY STRONG AND GUSTY NORTH TO NORTHEAST WINDS TODAY THROUGH FRIDAY... .A VERY COLD AND STRONG UPPER LEVEL LOW DEEPENING AND MOVING INTO THE LOWER COLORADO RIVER BASIN IS BRINGING VERY STRONG AND GUSTY NORTH TO NORTHEAST WINDS AS WELL AS MUCH COLDER AIR TO SOUTHERN CALIFORNIA TODAY. THE SYSTEM IS ALSO BRINGING SHOWERS...SNOW SHOWERS...AND THUNDERSTORMS TO PORTIONS OF THE REGION. THESE CONDITIONS WILL CONTINUE THROUGH FRIDAY...THEN TAPER OFF ON SATURDAY. CAZ242-248-257-012230- /O.CON.KSGX.FW.W.0004.000000T0000Z-111202T2300Z/ 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- 352 AM PST THU DEC 1 2011 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 3 PM PST FRIDAY FOR STRONG GUSTY WINDS AND MARGINAL HUMIDITIES... A RED FLAG WARNING REMAINS IN EFFECT UNTIL 3 PM PST FRIDAY. * WINDS...NORTH 25 TO 35 MPH WITH GUSTS TO 60 MPH. * RELATIVE HUMIDITY...LOWEST DAYTIME AROUND 20 PERCENT WITH POOR OVERNIGHT RECOVERY FOR SOME LOCATIONS. * TIMING...STRONG AND GUSTY NORTH TO NORTHEAST WINDS WILL CONTINUE INTO FRIDAY...WITH THE STRONGEST WIND GUSTS OCCURRING THIS MORNING AND AGAIN ON FRIDAY MORNING. * OUTLOOK...WINDS WILL DECREASE ON FRIDAY. 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. && $$ HTTP://WEATHER.GOV/SANDIEG0
717 WWUS86 KSGX 012120 RFWSGX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SAN DIEGO CA 120 PM PST THU DEC 1 2011 ...VERY STRONG AND GUSTY NORTH TO NORTHEAST WINDS THROUGH FRIDAY MORNING... .A VERY COLD AND STRONG UPPER LEVEL LOW OVER THE CALIFORNIA AND ARIZONA BORDER WILL CONTINUE TO BRING STRONG AND GUSTY NORTH TO NORTHEAST WINDS AND MARGINAL HUMIDITIES TO PORTIONS OF THE INLAND EMPIRE...THE ORANGE COUNTY COASTAL AREAS...AND THE SANTA ANA MOUNTAINS AND FOOTHILLS THROUGH FRIDAY. ELSEWHERE...SCATTERED SHOWERS AND SNOW SHOWERS WILL BE POSSIBLE. CAZ242-248-257-021400- /O.CON.KSGX.FW.W.0004.000000T0000Z-111202T2300Z/ ORANGE COUNTY COASTAL AREAS- SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE- SANTA ANA MOUNTAINS- INCLUDING THE TRABUCO RANGER DISTRICT OF THE CLEVELAND NATIONAL FOREST- 120 PM PST THU DEC 1 2011 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 3 PM PST FRIDAY FOR STRONG GUSTY WINDS AND MARGINAL HUMIDITIES... A RED FLAG WARNING REMAINS IN EFFECT UNTIL 3 PM PST FRIDAY. * WINDS: NORTH TO NORTHEAST 15 TO 30 MPH...WITH GUSTS TO 60 MPH THROUGH FRIDAY MORNING. HOWEVER...WINDS WILL DECREASE LATE FRIDAY MORNING...WITH LOCAL GUSTS UP TO 35 MPH POSSIBLE. * RELATIVE HUMIDITY: LOWEST DAYTIME AROUND 20 PERCENT...WITH MODERATE TO POOR OVERNIGHT RECOVERY. * TIMING: STRONG AND GUSTY NORTH TO NORTHEAST WINDS WILL CONTINUE INTO FRIDAY...WITH THE STRONGEST WIND GUSTS OCCURRING LATE TONIGHT AND EARLY FRIDAY MORNING. * OUTLOOK...WINDS WILL DECREASE THROUGH THE DAY ON FRIDAY. LIGHT TO MODERATE OFFSHORE WINDS MAY REDEVELOP THIS WEEKEND AND EARLY NEXT WEEK. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ HTTP://WEATHER.GOV/SANDIEG0
804 WWUS86 KSGX 021043 RFWSGX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SAN DIEGO CA 243 AM PST FRI DEC 2 2011 ...RED FLAG WARNING CANCELLED... .UPPER LEVEL LOW PRESSURE OVER ARIZONA AND SOUTHERN CALIFORNIA WILL MOVE EAST TODAY. MOISTURE ASSOCIATED WITH THE LOW PRESSURE SYSTEM WILL BEGIN TO DRY TODAY AS THE LOW PRESSURE SYSTEM MOVES EAST. HOWEVER WINDS ARE EXPECTED TO DECREASE BY AFTERNOON WHEN THE HUMIDITIES WILL BEGIN TO FALL. CAZ242-248-257-021145- /O.CAN.KSGX.FW.W.0004.000000T0000Z-111202T2300Z/ 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- 243 AM PST FRI DEC 2 2011 ...RED FLAG WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS CANCELLED THE RED FLAG WARNING. AREAS OF NORTHEAST WINDS 20 TO 30 MPH WITH GUSTS TO 45 MPH WILL CONTINUE THROUGH MID MORNING...THEN DECREASE THROUGH EARLY AFTERNOON. LOWEST HUMIDITIES WILL LOWER TO AROUND 15 PERCENT...BUT NOT UNTIL AFTERNOON WHEN WINDS HAVE DECREASED. MORE STRONG GUSTY NORTHEAST TO EAST WINDS ARE EXPECTED FOR LATE TONIGHT THROUGH SUNDAY. HOWEVER...LOWEST HUMIDITIES WILL REMAIN MARGINAL TO REACH RED FLAG WARNING CRITERIA. HIGHER FUEL MOISTURES AS A RESULT OF PRECIPITATION IN NOVEMBER WILL CONTINUE TO MINIMIZE CHANCES FOR LARGER WILDFIRE GROWTH. $$ HTTP://WEATHER.GOV/SANDIEG0 MARTIN
The office that day
Everything else NWS San Diego, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 29, 10:10 PM PST | Wind Advisory | SGX | Orange, Riverside, San Bernardino, San Diego | 53 hr |
| Nov 30, 8:09 AM PST | Gale Warning | SGX | 28 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.