Alert archive / California / Red Flag Warnings in 2011
Red Flag Warning 1, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this red flag warning at Sep 9, 2011, 12:02 PM PDT for 7 counties in California. It was in force for 23 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Sep 9, 2011, 12:02 PM PDT (19:02 UTC)
- Expired
- Sep 10, 2011, 11:00 AM PDT
- In force
- 23 hr
- Issued by
- NWS San Francisco Bay Area, CA
Counties Alameda County, CA, Contra Costa County, CA, Monterey County, CA, San Benito County, CA, San Mateo County, CA, Santa Clara County, CA, Santa Cruz County, CA
The radar
The San Francisco radar (KMUX), 12 km from the middle of the area, began a volume at 18:59 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.
The nearest sounding before it
Oakland, CA (KOAK), launched 12:00Z, 7.0 hours before the alert went out and 74 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
- 1291 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 52 m²/s²
- 0-3 km storm-relative helicity
- 52 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
476 WWUS86 KMTR 091902 RFWMTR URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 1202 PM PDT FRI SEP 9 2011 ...LOW RELATIVE HUMIDITY RECOVERIES AND GUSTY OFFSHORE WINDS EXPECTED IN THE NORTH BAY MOUNTAINS THROUGH SATURDAY MORNING... ...DRY LIGHTNING POSSIBLE IN MONTEREY...SAN BENITO AND SANTA CLARA SATURDAY MORNING THROUGH SUNDAY MORNING... CAZ507-100315- /O.NEW.KMTR.FW.W.0001.110909T1902Z-110910T1800Z/ NORTH BAY MOUNTAINS- 1202 PM PDT FRI SEP 9 2011 ...RED FLAG WARNING IN EFFECT UNTIL 11 AM PDT SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTH BAY MOUNTAINS ABOVE 1500 FEET... THE NATIONAL WEATHER SERVICE IN SAN FRANCISCO HAS ISSUED A RED FLAG WARNING FOR WIND AND LOW RELATIVE HUMIDITY...WHICH IS IN EFFECT UNTIL 11 AM PDT SATURDAY. * AFFECTED AREA...NORTH BAY MOUNTAINS ABOVE 1500 FEET. * WINDS...NORTH TO NORTHEAST WINDS 6 TO 12 MPH WITH GUSTS UP TO 22 MPH. * RELATIVE HUMIDITY...AS LOW AS 10 PERCENT THROUGH THIS AFTERNOON WITH RECOVERIES BETWEEN 20 TO 35 PERCENT. * IMPACTS...THE COMBINATION OF LOW RELATIVE HUMIDITY AND GUSTY OFFSHORE WINDS WILL RESULT IN HEIGHTENED RISK OF WILD FIRE ACTIVITY. 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. && $$ CAZ511-516>518-100315- /O.NEW.KMTR.FW.A.0001.110910T1800Z-110911T1800Z/ EAST BAY HILLS AND DIABLO RANGE- SOUTHERN SALINAS VALLEY...ARROYO SECO...AND LAKE SAN ANTONIO- SANTA LUCIA MOUNTAINS AND LOS PADRES NATIONAL FOREST- MOUNTAINS OF SAN BENITO AND INTERIOR MONTEREY COUNTY INCLUDING PINNACLES NATIONAL MONUMENT- 1202 PM PDT FRI SEP 9 2011 ...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY MORNING THROUGH SUNDAY MORNING FOR THUNDERSTORMS WITH DRY LIGHTNING FOR PORTIONS OF SANTA CLARA COUNTY...MONTEREY COUNTY AND SAN BENITO COUNTY... THE NATIONAL WEATHER SERVICE IN SAN FRANCISCO HAS ISSUED A FIRE WEATHER WATCH FOR THUNDERSTORMS WITH DRY LIGHTNING...WHICH IS IN EFFECT FROM SATURDAY MORNING THROUGH SUNDAY MORNING. * AFFECTED AREA...PORTIONS OF SANTA CLARA COUNTY...MONTEREY AND SANTA CLARA COUNTIES. * DRY LIGHTNING...INITIALLY ANY THUNDERSTORMS WILL BE DRY WITH GUSTY WINDS. THUNDERSTORMS WILL TRANSITION TO WET AS THE ATMOSPHERE MOISTENS. * THUNDERSTORMS...COVERAGE WILL BE SCATTERED WITH SOME AREAS NOT SEEING ANY ACTIVITY AT ALL. * IMPACTS...EASTERN PORTIONS OF SANTA CLARA COUNTY AND AREAS ABOVE 1500 FEET ELEVATION IN BOTH MONTEREY AND SAN BENITO COUNTIES ARE EXPERIENCING POOR RELATIVE HUMIDITY RECOVERIES AND HAVE BEEN REPORTING DRY CONDITIONS. THEREFORE EVEN WITH SCATTERED THUNDERSTORM ACTIVITY AND LIGHTNING STRIKES WILL HAVE TO POTENTIAL TO IGNITE A FIRE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE RED FLAG WARNINGS. && $$ FOR MORE INFORMATION FROM NOAA/NATIONAL WEATHER SERVICE VISIT... HTTP://WEATHER.GOV/SANFRANCISCO (ALL LOWER CASE) LARRY
5 follow-up statements
188 WWUS86 KMTR 091957 RFWMTR URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 1257 PM PDT FRI SEP 9 2011 ...LOW RELATIVE HUMIDITY RECOVERIES AND GUSTY OFFSHORE WINDS EXPECTED IN THE NORTH BAY MOUNTAINS THROUGH SATURDAY MORNING... ...DRY LIGHTNING POSSIBLE IN MONTEREY...SAN BENITO...ALAMEDA AND SANTA CLARA COUNTIES SATURDAY MORNING THROUGH SUNDAY MORNING... CAZ507-100800- /O.CON.KMTR.FW.W.0001.000000T0000Z-110910T1800Z/ NORTH BAY MOUNTAINS- 1257 PM PDT FRI SEP 9 2011 ...RED FLAG WARNING IN EFFECT UNTIL 11 AM PDT SATURDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR THE NORTH BAY MOUNTAINS ABOVE 1500 FEET... THE NATIONAL WEATHER SERVICE IN SAN FRANCISCO HAS ISSUED A RED FLAG WARNING FOR WIND AND LOW RELATIVE HUMIDITY...WHICH IS IN EFFECT UNTIL 11 AM PDT SATURDAY. * AFFECTED AREA...NORTH BAY MOUNTAINS ABOVE 1500 FEET. * WINDS...NORTH TO NORTHEAST WINDS 6 TO 12 MPH WITH GUSTS UP TO 22 MPH. * RELATIVE HUMIDITY...AS LOW AS 10 PERCENT THROUGH THIS AFTERNOON WITH RECOVERIES BETWEEN 20 TO 35 PERCENT. * IMPACTS...THE COMBINATION OF LOW RELATIVE HUMIDITY AND GUSTY OFFSHORE WINDS WILL RESULT IN HEIGHTENED RISK OF WILD FIRE ACTIVITY. 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. && $$ CAZ510-100800- /O.EXA.KMTR.FW.A.0001.110910T1800Z-110911T1800Z/ EAST BAY INTERIOR VALLEYS- 1257 PM PDT FRI SEP 9 2011 ...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY MORNING THROUGH SUNDAY MORNING FOR THUNDERSTORMS WITH DRY LIGHTNING FOR PORTIONS OF ALAMEDA COUNTY... THE NATIONAL WEATHER SERVICE SAN FRANCISCO HAS ISSUED A FIRE WEATHER WATCH...WHICH IS IN EFFECT FROM SATURDAY MORNING THROUGH SUNDAY MORNING. * AFFECTED AREA...PORTIONS OF ALAMEDA COUNTY. * DRY LIGHTNING...INITIALLY ANY THUNDERSTORMS WILL BE DRY WITH GUSTY WINDS. THUNDERSTORMS WILL TRANSITION TO WET AS THE ATMOSPHERE MOISTENS. * THUNDERSTORMS...COVERAGE WILL BE SCATTERED WITH SOME AREAS NOT SEEING ANY ACTIVITY AT ALL. * IMPACTS...PORTIONS OF ALAMEDA COUNTY ARE EXPERIENCING POOR RELATIVE HUMIDITY RECOVERIES AND HAVE BEEN REPORTING DRY CONDITIONS. THEREFORE EVEN WITH SCATTERED THUNDERSTORM ACTIVITY AND LIGHTNING STRIKES WILL HAVE TO POTENTIAL TO IGNITE A FIRE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE RED FLAG WARNINGS. && $$ CAZ511-516>518-100800- /O.CON.KMTR.FW.A.0001.110910T1800Z-110911T1800Z/ EAST BAY HILLS AND DIABLO RANGE- SOUTHERN SALINAS VALLEY...ARROYO SECO...AND LAKE SAN ANTONIO- SANTA LUCIA MOUNTAINS AND LOS PADRES NATIONAL FOREST- MOUNTAINS OF SAN BENITO AND INTERIOR MONTEREY COUNTY INCLUDING PINNACLES NATIONAL MONUMENT- 1257 PM PDT FRI SEP 9 2011 ...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY MORNING THROUGH SUNDAY MORNING FOR THUNDERSTORMS WITH DRY LIGHTNING FOR PORTIONS OF SANTA CLARA COUNTY...MONTEREY COUNTY AND SAN BENITO COUNTY... THE NATIONAL WEATHER SERVICE IN SAN FRANCISCO HAS ISSUED A FIRE WEATHER WATCH FOR THUNDERSTORMS WITH DRY LIGHTNING...WHICH IS IN EFFECT FROM SATURDAY MORNING THROUGH SUNDAY MORNING. * AFFECTED AREA...PORTIONS OF SANTA CLARA COUNTY...MONTEREY AND SANTA CLARA COUNTIES. * DRY LIGHTNING...INITIALLY ANY THUNDERSTORMS WILL BE DRY WITH GUSTY WINDS. THUNDERSTORMS WILL TRANSITION TO WET AS THE ATMOSPHERE MOISTENS. * THUNDERSTORMS...COVERAGE WILL BE SCATTERED WITH SOME AREAS NOT SEEING ANY ACTIVITY AT ALL. * IMPACTS...EASTERN PORTIONS OF SANTA CLARA COUNTY AND AREAS ABOVE 1500 FEET ELEVATION IN BOTH MONTEREY AND SAN BENITO COUNTIES ARE EXPERIENCING POOR RELATIVE HUMIDITY RECOVERIES AND HAVE BEEN REPORTING DRY CONDITIONS. THEREFORE EVEN WITH SCATTERED THUNDERSTORM ACTIVITY AND LIGHTNING STRIKES WILL HAVE TO POTENTIAL TO IGNITE A FIRE. 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. && $$ HTTP://WEATHER.GOV/SANFRANCISCO
574 WWUS86 KMTR 100157 RFWMTR URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 657 PM PDT FRI SEP 9 2011 ...DRY LIGHTNING LIKELY IN THE EAST BAY...SOUTH BAY...AND INTERIOR MONTEREY AND SAN BENITO COUNTIES TONIGHT AND SATURDAY... ...DRY LIGHTNING POSSIBLE LATE TONIGHT AND SATURDAY FOR THE SANTA CRUZ MOUNTAINS...SANTA LUCIA MOUNTAINS AND LOS PADRES NATIONAL FORREST...AND COASTAL SECTIONS OF MONTEREY AND SANTA CRUZ COUNTIES... ...LOW RELATIVE HUMIDITY RECOVERIES AND GUSTY OFFSHORE WINDS EXPECTED IN THE NORTH BAY MOUNTAINS TONIGHT THROUGH SATURDAY MORNING... CAZ510-511-516-518-101300- /O.UPG.KMTR.FW.A.0001.110910T1800Z-110911T1800Z/ /O.EXB.KMTR.FW.W.0001.000000T0000Z-110911T0000Z/ EAST BAY INTERIOR VALLEYS-EAST BAY HILLS AND DIABLO RANGE- SOUTHERN SALINAS VALLEY...ARROYO SECO...AND LAKE SAN ANTONIO- MOUNTAINS OF SAN BENITO AND INTERIOR MONTEREY COUNTY INCLUDING PINNACLES NATIONAL MONUMENT- 657 PM PDT FRI SEP 9 2011 ...RED FLAG WARNING IN EFFECT UNTIL 5 PM PDT SATURDAY FOR THUNDERSTORMS WITH DRY LIGHTNING FOR THE EAST BAY HILLS AND DIABLO RANGE...THE EAST BAY VALLEYS...SAN BENITO COUNTY...AND INTERIOR MOUNTAINS AND VALLEYS OF MONTEREY COUNTY... THE NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT UNTIL 5 PM PDT SATURDAY. * AFFECTED AREA...THE EAST BAY HILLS AND DIABLO RANGE...THE EAST BAY VALLEYS...SAN BENITO COUNTY...AND INTERIOR MOUNTAINS AND VALLEYS OF MONTEREY COUNTY... * DRY LIGHTNING...AT 7 PM PDT FRIDAY THUNDERSTORMS OVER THE NORTHERN SAN JOAQUIN VALLEY WERE MOVING TO THE WEST. INITIALLY ANY THUNDERSTORMS WILL BE DRY WITH BRIEF GUSTY WINDS. THUNDERSTORMS WILL TRANSITION TO WET AS THE ATMOSPHERE MOISTENS. * THUNDERSTORMS...COVERAGE WILL BE SCATTERED WITH SOME AREAS NOT SEEING ANY ACTIVITY AT ALL. * IMPACTS...FUELS ARE DRY...PARTICULARLY IN THE HILLS. THEREFORE...LIGHTNING STRIKES FROM ISOLATED THUNDERSTORMS HAVE THE POTENTIAL TO IGNITE FIRES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF DRY FUELS AND LIGHTNING STRIKES WITH LITTLE OR NO RAIN COULD RESULT IN FIRE STARTS. && $$ CAZ513-528-101300- /O.EXB.KMTR.FW.W.0001.000000T0000Z-110911T0000Z/ SANTA CLARA VALLEY...INCLUDING SAN JOSE- NORTHERN SALINAS VALLEY...HOLLISTER VALLEY...AND CARMEL VALLEY- 657 PM PDT FRI SEP 9 2011 ...RED FLAG WARNING IN EFFECT UNTIL 5 PM PDT SATURDAY FOR THUNDERSTORMS WITH DRY LIGHTNING FOR THE SANTA CLARA VALLEY...AND THE VALLEYS OF MONTEREY AND SAN BENITO COUNTIES... THE NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT UNTIL 5 PM PDT SATURDAY. * AFFECTED AREA...VALLEYS OF SANTA CLARA...SAN BENITO...NORTHERN MONTEREY COUNTY...AND NORTHERN SAN BENITO COUNTY. * DRY LIGHTNING...AT 7 PM PDT FRIDAY THUNDERSTORMS OVER THE NORTHERN SAN JOAQUIN VALLEY WERE MOVING TO THE WEST. INITIALLY ANY THUNDERSTORMS WILL BE DRY WITH BRIEF GUSTY WINDS. THUNDERSTORMS WILL TRANSITION TO WET AS THE ATMOSPHERE MOISTENS. * THUNDERSTORMS...COVERAGE WILL BE SCATTERED WITH SOME AREAS NOT SEEING ANY ACTIVITY AT ALL. * IMPACTS...FUELS ARE DRY...PARTICULARLY IN THE HILLS. THEREFORE...LIGHTNING STRIKES FROM ISOLATED THUNDERSTORMS HAVE THE POTENTIAL TO IGNITE FIRES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF DRY FUELS AND LIGHTNING STRIKES WITH LITTLE OR NO RAIN COULD RESULT IN FIRE STARTS. && $$ CAZ507-101300- /O.CON.KMTR.FW.W.0001.000000T0000Z-110910T1800Z/ NORTH BAY MOUNTAINS- 657 PM PDT FRI SEP 9 2011 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 11 AM PDT SATURDAY FOR LOCALLY GUSTY NORTH WINDS AND LOW RELATIVE HUMIDITY FOR THE NORTH BAY MOUNTAINS ABOVE 1500 FEET... * AFFECTED AREA...NORTH BAY MOUNTAINS ABOVE 1500 FEET. * WINDS...NORTH TO NORTHEAST WINDS 6 TO 12 MPH WITH GUSTS UP TO 22 MPH. * RELATIVE HUMIDITY...AS LOW AS 10 PERCENT THROUGH THIS EVENING WITH RECOVERIES BETWEEN 20 TO 35 PERCENT LATER TONIGHT. * IMPACTS...THE COMBINATION OF LOW RELATIVE HUMIDITY AND GUSTY OFFSHORE WINDS WILL RESULT IN HEIGHTENED RISK OF WILD FIRE ACTIVITY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ CAZ512-529-530-101300- /O.EXB.KMTR.FW.A.0001.110910T0700Z-110911T0000Z/ SANTA CRUZ MOUNTAINS-NORTHERN MONTEREY BAY- SOUTHERN MONTEREY BAY AND BIG SUR COAST- 657 PM PDT FRI SEP 9 2011 ...FIRE WEATHER WATCH IN EFFECT FROM MIDNIGHT PDT TONIGHT THROUGH SATURDAY AFTERNOON FOR THUNDERSTORMS WITH DRY LIGHTNING FOR THE SANTA CRUZ MOUNTAINS...MONTEREY BAY COASTAL AREAS AND THE BIG SUR COAST... THE NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA HAS ISSUED A FIRE WEATHER WATCH...WHICH IS IN EFFECT FROM MIDNIGHT PDT TONIGHT THROUGH SATURDAY AFTERNOON. * AFFECTED AREA...THE SANTA CRUZ MOUNTAINS...MONTEREY BAY COASTAL AREAS...THE BIG SUR COAST. * DRY LIGHTNING...INITIALLY ANY THUNDERSTORMS WILL BE DRY WITH BRIEF GUSTY WINDS. THUNDERSTORMS WILL TRANSITION TO WET AS THE ATMOSPHERE MOISTENS. * THUNDERSTORMS...COVERAGE WILL BE ISOLATED WITH SOME AREAS NOT SEEING ANY ACTIVITY AT ALL. * IMPACTS...FUELS ARE DRY...PARTICULARLY IN THE HILLS. THEREFORE...LIGHTNING STRIKES FROM ISOLATED THUNDERSTORMS HAVE THE POTENTIAL TO IGNITE FIRES. 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. && $$ CAZ517-101300- /O.EXT.KMTR.FW.A.0001.110910T0700Z-110911T0000Z/ SANTA LUCIA MOUNTAINS AND LOS PADRES NATIONAL FOREST- 657 PM PDT FRI SEP 9 2011 ...FIRE WEATHER WATCH NOW IN EFFECT FROM MIDNIGHT PDT TONIGHT THROUGH SATURDAY AFTERNOON FOR THUNDERSTORMS WITH DRY LIGHTNING FOR THE SANTA LUCIA MOUNTAINS AND LOS PADRES NATIONAL FORREST... THE FIRE WEATHER WATCH IS NOW IN EFFECT FROM MIDNIGHT PDT TONIGHT THROUGH SATURDAY AFTERNOON. * AFFECTED AREA...SANTA LUCIA MOUNTAINS AND LOS PADRES NATIONAL FOREST. * DRY LIGHTNING...INITIALLY ANY THUNDERSTORMS WILL BE DRY WITH GUSTY WINDS. THUNDERSTORMS WILL TRANSITION TO WET AS THE ATMOSPHERE MOISTENS. * THUNDERSTORMS...COVERAGE WILL BE ISOLATED WITH SOME AREAS NOT SEEING ANY ACTIVITY AT ALL. * IMPACTS...FUELS ARE DRY...PARTICULARLY IN THE HILLS. THEREFORE...LIGHTNING STRIKES FROM ISOLATED THUNDERSTORMS HAVE THE POTENTIAL TO IGNITE FIRES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE RED FLAG WARNINGS. && $$ HTTP://WEATHER.GOV/SANFRANCISCO
698 WWUS86 KMTR 100426 RFWMTR URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 926 PM PDT FRI SEP 9 2011 ...DRY LIGHTNING IN THE EAST BAY...SOUTH BAY...SANTA CRUZ MOUNTAINS...AND INTERIOR MONTEREY AND SAN BENITO COUNTIES TONIGHT AND SATURDAY... ...DRY LIGHTNING POSSIBLE LATE TONIGHT AND SATURDAY FOR THE SANTA LUCIA MOUNTAINS AND LOS PADRES NATIONAL FORREST...AND COASTAL SECTIONS OF MONTEREY AND SANTA CRUZ COUNTIES... ...LOW RELATIVE HUMIDITY RECOVERIES AND GUSTY OFFSHORE WINDS EXPECTED IN THE NORTH BAY MOUNTAINS TONIGHT THROUGH SATURDAY MORNING... CAZ512-101300- /O.UPG.KMTR.FW.A.0001.110910T0700Z-110911T0000Z/ /O.EXA.KMTR.FW.W.0001.000000T0000Z-110911T0000Z/ SANTA CRUZ MOUNTAINS- 926 PM PDT FRI SEP 9 2011 ...RED FLAG WARNING IN EFFECT UNTIL 5 PM PDT SATURDAY FOR THUNDERSTORMS WITH DRY LIGHTNING FOR THE SANTA CRUZ MOUNTAINS... THE NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT UNTIL 5 PM PDT SATURDAY. * AFFECTED AREA...THE SANTA CRUZ MOUNTAINS... * DRY LIGHTNING...INITIALLY ANY THUNDERSTORMS WILL BE DRY WITH BRIEF GUSTY WINDS. THUNDERSTORMS WILL TRANSITION TO WET AS THE ATMOSPHERE MOISTENS. * THUNDERSTORMS...AT 9 PM PDT A LINE OF SHOWERS AND ISOLATED THUNDERSTORMS WAS MOVING INTO THE SANTA CRUZ MOUNTAINS FROM THE NORTHEAST. * IMPACTS...FUELS ARE DRY...PARTICULARLY IN THE HILLS. THEREFORE...LIGHTNING STRIKES FROM ISOLATED THUNDERSTORMS HAVE THE POTENTIAL TO IGNITE FIRES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF DRY FUELS AND LIGHTNING STRIKES WITH LITTLE OR NO RAIN COULD RESULT IN FIRE STARTS. && $$ CAZ507-101300- /O.CON.KMTR.FW.W.0001.000000T0000Z-110910T1800Z/ NORTH BAY MOUNTAINS- 926 PM PDT FRI SEP 9 2011 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 11 AM PDT SATURDAY FOR LOCALLY GUSTY NORTH WINDS AND LOW RELATIVE HUMIDITY FOR THE NORTH BAY MOUNTAINS ABOVE 1500 FEET... * AFFECTED AREA...NORTH BAY MOUNTAINS ABOVE 1500 FEET. * WINDS...NORTH TO NORTHEAST WINDS 6 TO 12 MPH WITH GUSTS UP TO 22 MPH. * RELATIVE HUMIDITY...AS LOW AS 10 PERCENT THROUGH THIS EVENING WITH RECOVERIES BETWEEN 20 TO 35 PERCENT LATER TONIGHT. * IMPACTS...THE COMBINATION OF LOW RELATIVE HUMIDITY AND GUSTY OFFSHORE WINDS WILL RESULT IN HEIGHTENED RISK OF WILD FIRE ACTIVITY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ CAZ510-511-513-516-518-528-101300- /O.CON.KMTR.FW.W.0001.000000T0000Z-110911T0000Z/ EAST BAY INTERIOR VALLEYS-EAST BAY HILLS AND DIABLO RANGE- SANTA CLARA VALLEY...INCLUDING SAN JOSE- SOUTHERN SALINAS VALLEY...ARROYO SECO...AND LAKE SAN ANTONIO- MOUNTAINS OF SAN BENITO AND INTERIOR MONTEREY COUNTY INCLUDING PINNACLES NATIONAL MONUMENT- NORTHERN SALINAS VALLEY...HOLLISTER VALLEY...AND CARMEL VALLEY- 926 PM PDT FRI SEP 9 2011 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM PDT SATURDAY FOR THUNDERSTORMS WITH DRY LIGHTNING FOR THE EAST BAY HILLS AND DIABLO RANGE...THE EAST BAY VALLEYS...SAN BENITO COUNTY...AND INTERIOR MOUNTAINS AND VALLEYS OF MONTEREY COUNTY... * AFFECTED AREA...THE EAST BAY HILLS AND DIABLO RANGE...THE EAST BAY VALLEYS...SAN BENITO COUNTY...AND INTERIOR MOUNTAINS AND VALLEYS OF MONTEREY COUNTY... * DRY LIGHTNING...SCATTERED THUNDERSTORMS CONTINUE TO MOVE THROUGH THE AREA. SOME THUNDERSTORMS ARE PROBABLY DRY WITH BRIEF GUSTY WINDS. THUNDERSTORMS WILL TRANSITION TO WET AS THE ATMOSPHERE MOISTENS. * THUNDERSTORMS...THUNDERSTORM CHANCES WILL CONTINUE THROUGH SATURDAY WITH SOME THUNDERSTORMS POSSIBLY PRODUCING DRY LIGHTNING. * IMPACTS...FUELS ARE DRY...PARTICULARLY IN THE HILLS. THEREFORE...LIGHTNING STRIKES FROM ISOLATED THUNDERSTORMS HAVE THE POTENTIAL TO IGNITE FIRES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF DRY FUELS AND LIGHTNING STRIKES WITH LITTLE OR NO RAIN COULD RESULT IN FIRE STARTS. && $$ CAZ517-529-530-101300- /O.CON.KMTR.FW.A.0001.110910T0700Z-110911T0000Z/ SANTA LUCIA MOUNTAINS AND LOS PADRES NATIONAL FOREST- NORTHERN MONTEREY BAY-SOUTHERN MONTEREY BAY AND BIG SUR COAST- 926 PM PDT FRI SEP 9 2011 ...FIRE WEATHER WATCH REMAINS IN EFFECT THROUGH SATURDAY AFTERNOON FOR THUNDERSTORMS WITH DRY LIGHTNING FOR THE SANTA LUCIA MOUNTAINS AND LOS PADRES NATIONAL FORREST AS WELL AS COASTAL SECTIONS OF MONTEREY AND SANTA CRUZ COUNTIES... * AFFECTED AREA...SANTA LUCIA MOUNTAINS AND LOS PADRES NATIONAL FOREST...NORTHERN MONTEREY BAY...SOUTHERN MONTEREY BAY AND BIG SUR COAST. * DRY LIGHTNING...INITIALLY ANY THUNDERSTORMS WILL BE DRY WITH GUSTY WINDS. THUNDERSTORMS WILL TRANSITION TO WET AS THE ATMOSPHERE MOISTENS. * THUNDERSTORMS...COVERAGE WILL BE ISOLATED WITH SOME AREAS NOT SEEING ANY ACTIVITY AT ALL. * IMPACTS...FUELS ARE DRY...PARTICULARLY IN THE HILLS. THEREFORE...LIGHTNING STRIKES FROM ISOLATED THUNDERSTORMS HAVE THE POTENTIAL TO IGNITE FIRES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE RED FLAG WARNINGS. && $$ HTTP://WEATHER.GOV/SANFRANCISCO
302 WWUS86 KMTR 101051 RFWMTR URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 351 AM PDT SAT SEP 10 2011 ...CRITICAL FIRE WEATHER CONDITIONS CONTINUE IN THE NORTH BAY MOUNTAINS DUE TO VERY DRY AIR AND LOCALLY GUSTY OFFSHORE WINDS... ...A SLIGHT CHANCE OF THUNDERSTORMS WILL CONTINUE THROUGH THE WEEKEND...BUT ADDITIONAL THUNDERSTORMS ARE EXPECTED TO BE WET... CAZ510>513-516-518-528-101200- /O.CAN.KMTR.FW.W.0001.000000T0000Z-110911T0000Z/ EAST BAY INTERIOR VALLEYS-EAST BAY HILLS AND DIABLO RANGE- SANTA CRUZ MOUNTAINS-SANTA CLARA VALLEY...INCLUDING SAN JOSE- SOUTHERN SALINAS VALLEY...ARROYO SECO...AND LAKE SAN ANTONIO- MOUNTAINS OF SAN BENITO AND INTERIOR MONTEREY COUNTY INCLUDING PINNACLES NATIONAL MONUMENT- NORTHERN SALINAS VALLEY...HOLLISTER VALLEY...AND CARMEL VALLEY- 351 AM PDT SAT SEP 10 2011 ...RED FLAG WARNING IS CANCELLED FOR THUNDERSTORMS WITH DRY LIGHTNING FOR THE EAST BAY HILLS AND DIABLO RANGE...THE EAST BAY VALLEYS...SAN BENITO COUNTY...AND INTERIOR MOUNTAINS AND VALLEYS OF MONTEREY COUNTY... THE NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA HAS CANCELLED THE RED FLAG WARNING FOR DRY LIGHTNING. ADDITIONAL THUNDERSTORMS ARE POSSIBLE TODAY...PARTICULARLY ACROSS SOUTHERN MONTEREY AND SAN BENITO COUNTIES...BUT THESE THUNDERSTORMS ARE EXPECTED TO BE WET AND ADDITIONAL FIRE STARTS ARE UNLIKELY. $$ CAZ517-529-530-101200- /O.CAN.KMTR.FW.A.0001.000000T0000Z-110911T0000Z/ SANTA LUCIA MOUNTAINS AND LOS PADRES NATIONAL FOREST- NORTHERN MONTEREY BAY-SOUTHERN MONTEREY BAY AND BIG SUR COAST- 351 AM PDT SAT SEP 10 2011 ...FIRE WEATHER WATCH IS CANCELLED FOR THUNDERSTORMS WITH DRY LIGHTNING FOR THE SANTA LUCIA MOUNTAINS AND LOS PADRES NATIONAL FORREST AS WELL AS COASTAL SECTIONS OF MONTEREY AND SANTA CRUZ COUNTIES... THE NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA HAS CANCELLED THE FIRE WEATHER WATCH. ADDITIONAL THUNDERSTORMS ARE POSSIBLE TODAY...PARTICULARLY ACROSS SOUTHERN MONTEREY COUNTY...BUT THESE ADDITIONAL THUNDERSTORMS ARE EXPECTED TO BE WET. $$ CAZ507-101800- /O.CON.KMTR.FW.W.0001.000000T0000Z-110910T1800Z/ NORTH BAY MOUNTAINS- 351 AM PDT SAT SEP 10 2011 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 11 AM PDT THIS MORNING FOR LOCALLY GUSTY NORTH WINDS AND LOW RELATIVE HUMIDITY FOR THE NORTH BAY MOUNTAINS ABOVE 1500 FEET... * AFFECTED AREA...NORTH BAY MOUNTAINS ABOVE 1500 FEET. * WINDS...NORTH TO NORTHEAST WINDS 6 TO 15 MPH WITH GUSTS UP TO 25 MPH HAVE BEEN OCCURRING OVERNIGHT ACROSS NORTHERN SONOMA COUNTY AND NORTHERN NAPA COUNTY. THESE CONDITIONS WILL CONTINUE THROUGH MID MORNING. * RELATIVE HUMIDITY...HUMIDITY RECOVERIES HAVE BEEN POOR OVERNIGHT...WITH RELATIVE HUMIDITIES GENERALLY REMAINING BELOW 30 PERCENT. * IMPACTS...THE COMBINATION OF LOW RELATIVE HUMIDITY AND GUSTY NORTH TO NORTHEAST WINDS WILL RESULT IN HEIGHTENED RISK OF WILD FIRE ACTIVITY. 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. && $$ HTTP://WEATHER.GOV/SANFRANCISCO
462 WWUS86 KMTR 101759 RFWMTR URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 1059 AM PDT SAT SEP 10 2011 CAZ507-101900- /O.EXP.KMTR.FW.W.0001.000000T0000Z-110910T1800Z/ NORTH BAY MOUNTAINS- 1059 AM PDT SAT SEP 10 2011 ...RED FLAG WARNING WILL EXPIRE AT 11 AM PDT THIS MORNING FOR GUSTY WINDS AND LOW HUMIDITY FOR THE NORTH BAY MOUNTAINS... THE RED FLAG WARNING WILL EXPIRE AT 11 AM PDT THIS MORNING. WIND SPEEDS HAVE DIMINISHED AND RELATIVE HUMIDITY VALUES HAVE ALSO INCREASED. $$ HTTP://WEATHER.GOV/SANFRANCISCO
The office that day
Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 9, 12:02 PM PDT | Fire Weather Watch | MTR | Alameda, Contra Costa, Monterey, San Benito, San Mateo, Santa Clara and 1 more | 16 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.