Alert archive / California / Red Flag Warnings in 2008
Red Flag Warning 2, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this red flag warning at Jun 21, 2008, 12:54 PM PDT for 7 counties in California. It was in force for 5 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
- Jun 21, 2008, 12:54 PM PDT (19:54 UTC)
- Expired
- Jun 21, 2008, 6:00 PM PDT
- In force
- 5 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 nearest sounding before it
Oakland, CA (KOAK), launched 12:00Z, 7.9 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
- 3494 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 48 m²/s²
- 0-3 km storm-relative helicity
- 120 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WWUS86 KMTR 211954 RFWMTR RED FLAG WARNING NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 1254 PM PDT SAT JUN 21 2008 ...DRY LIGHTNING POSSIBLE THIS AFTERNOON AND EARLY THIS EVENING... .AN AREA OF THUNDERSTORMS HAD DEVELOPED OFF THE CENTRAL CALIFORNIA COAST LATE ON SATURDAY MORNING. THESE THUNDERSTORMS WERE MOVING NORTHEAST AND WERE PRODUCING SEVERAL LIGHTNING STRIKES. THE AIRMASS BELOW THE CLOUD LAYER IS DRY AND SO THERE IS A STRONG POSSIBILITY OF DRY LIGHTNING AS THESE THUNDERSTORMS MOVE INLAND THIS AFTERNOON. THUNDERSTORM ACTIVITY WILL LIKELY BE IN AN AREA FROM CONTRA COSTA COUNTY SOUTH THROUGH MONTEREY COUNTY. CAZ510>513-516>518-528>530-220600- /O.NEW.KMTR.FW.W.0002.080621T1954Z-080622T0600Z/ 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- SANTA LUCIA MOUNTAINS AND LOS PADRES NATIONAL FOREST- MOUNTAINS OF SAN BENITO AND INTERIOR MONTEREY COUNTY INCLUDING PINNACLES NATIONAL MONUMENT- NORTHERN SALINAS VALLEY...HOLLISTER VALLEY...AND CARMEL VALLEY- NORTHERN MONTEREY BAY-SOUTHERN MONTEREY BAY AND BIG SUR COAST- 1254 PM PDT SAT JUN 21 2008 ...RED FLAG WARNING FOR DRY LIGHTNING IN EFFECT UNTIL 11 PM PDT THIS EVENING FOR THE EASTERN AND SOUTHERN PORTIONS OF THE SAN FRANCISCO BAY AREA AS WELL AS THE ENTIRE MONTEREY BAY AREA... THE NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT UNTIL 11 PM PDT THIS EVENING. THE RED FLAG WARNING INCLUDES THE EAST BAY HILLS AND DIABLO RANGE...THE SANTA CRUZ MOUNTAINS...AND ALL MOUNTAINS IN MONTEREY AND SAN BENITO COUNTIES. THE RED FLAG WARNING ALSO INCLUDES ALL VALLEYS ADJOINING THESE MOUNTAIN AREAS. SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS WILL SPREAD ACROSS THE AREA THIS AFTERNOON AND CONTINUE INTO EARLY EVENING. DRY LIGHTNING IS POSSIBLE DUE TO A DEEP DRY LAYER BELOW THE THUNDERSTORM BASES. A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF HOT AND DRY WEATHER ALONG WITH DRY LIGHTNING WILL PRODUCE CRITICAL FIRE WEATHER CONDITIONS. $$ DYKEMA
2 follow-up statements
000 WWUS86 KMTR 212205 RFWMTR RED FLAG WARNING NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 305 PM PDT SAT JUN 21 2008 ...DRY LIGHTNING POSSIBLE THIS AFTERNOON... .THE LAST PORTION OF AN AREA OF THUNDERSTORMS THAT DEVELOPED EARLIER TODAY OFF THE CENTRAL CALIFORNIA COAST IS NOW MOVING INLAND THROUGH THE MONTEREY BAY REGION. NUMEROUS LIGHTNING STRIKES HAVE BEEN REPORTED WITH THESE THUNDERSTORMS. THE AIRMASS BELOW THE CLOUD LAYER IS DRY AND SO THERE IS A STRONG POSSIBILITY OF DRY LIGHTNING AS THESE THUNDERSTORMS MOVE INLAND. THUNDERSTORM ACTIVITY WILL LIKELY BE IN AN AREA ENCOMPASSING SANTA CRUZ COUNTY...SANTA CLARA COUNTY...FAR NORTHERN MONTEREY COUNTY AND NORTHERN SAN BENITO COUNTY. THIS THUNDERSTORM ACTIVITY IS EXPECTED TO END BY EVENING. CAZ510>513-516>518-528>530-220100- /O.EXT.KMTR.FW.W.0002.000000T0000Z-080622T0100Z/ 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- SANTA LUCIA MOUNTAINS AND LOS PADRES NATIONAL FOREST- MOUNTAINS OF SAN BENITO AND INTERIOR MONTEREY COUNTY INCLUDING PINNACLES NATIONAL MONUMENT- NORTHERN SALINAS VALLEY...HOLLISTER VALLEY...AND CARMEL VALLEY- NORTHERN MONTEREY BAY-SOUTHERN MONTEREY BAY AND BIG SUR COAST- 305 PM PDT SAT JUN 21 2008 ...RED FLAG WARNING NOW IN EFFECT UNTIL 6 PM PDT THIS AFTERNOON... THE RED FLAG WARNING INCLUDES THE EAST BAY HILLS AND DIABLO RANGE...THE SANTA CRUZ MOUNTAINS...AND THE MOUNTAINS OF MONTEREY AND SAN BENITO COUNTIES. THE RED FLAG WARNING ALSO INCLUDES THE VALLEYS ADJOINING THESE MOUNTAIN AREAS. SCATTERED SHOWERS AND THUNDERSTORMS WILL CONTINUE THIS AFTERNOON...IN AN AREA ENCOMPASSING SANTA CRUZ COUNTY...SANTA CLARA COUNTY...FAR NORTHERN MONTEREY COUNTY AND NORTHERN SAN BENITO COUNTY. DRY LIGHTNING IS POSSIBLE DUE TO A DEEP DRY LAYER BELOW THE THUNDERSTORM BASES. A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF HOT AND DRY WEATHER ALONG WITH DRY LIGHTNING WILL PRODUCE CRITICAL FIRE WEATHER CONDITIONS. $$ BLIER/DYKEMA
000 WWUS86 KMTR 212230 RFWMTR RED FLAG WARNING NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 330 PM PDT SAT JUN 21 2008 ...DRY LIGHTNING POSSIBLE THIS AFTERNOON... .THE LAST PORTION OF AN AREA OF THUNDERSTORMS THAT DEVELOPED EARLIER TODAY OFF THE CENTRAL CALIFORNIA COAST IS NOW MOVING INLAND THROUGH THE MONTEREY BAY REGION. NUMEROUS LIGHTNING STRIKES HAVE BEEN REPORTED WITH THESE THUNDERSTORMS. THE AIRMASS BELOW THE CLOUD LAYER IS DRY AND SO THERE IS A STRONG POSSIBILITY OF DRY LIGHTNING AS THESE THUNDERSTORMS MOVE INLAND. THUNDERSTORM ACTIVITY WILL LIKELY BE IN AN AREA ENCOMPASSING SANTA CRUZ COUNTY...SANTA CLARA COUNTY...FAR NORTHERN MONTEREY COUNTY AND NORTHERN SAN BENITO COUNTY. THIS THUNDERSTORM ACTIVITY IS EXPECTED TO END BY EVENING. CAZ510-516-517-528>530-212330- /O.CAN.KMTR.FW.W.0002.000000T0000Z-080622T0100Z/ EAST BAY INTERIOR VALLEYS- SOUTHERN SALINAS VALLEY...ARROYO SECO...AND LAKE SAN ANTONIO- SANTA LUCIA MOUNTAINS AND LOS PADRES NATIONAL FOREST- NORTHERN SALINAS VALLEY...HOLLISTER VALLEY...AND CARMEL VALLEY- NORTHERN MONTEREY BAY-SOUTHERN MONTEREY BAY AND BIG SUR COAST- 330 PM PDT SAT JUN 21 2008 ...RED FLAG WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA HAS CANCELLED THE RED FLAG WARNING. THUNDERSTORMS AND ASSOCIATED DRY LIGHTNING ACTIVITY HAS NOW ENDED IN THE EAST BAY INTERIOR VALLEYS...THE SALINAS VALLEY...HOLLISTER VALLEY...CARMEL VALLEY...AND THE NORTHERN AND SOUTHERN MONTEREY BAY AREAS AND BIG SUR COAST. $$ CAZ511>513-518-220100- /O.CON.KMTR.FW.W.0002.000000T0000Z-080622T0100Z/ EAST BAY HILLS AND DIABLO RANGE-SANTA CRUZ MOUNTAINS- SANTA CLARA VALLEY...INCLUDING SAN JOSE- MOUNTAINS OF SAN BENITO AND INTERIOR MONTEREY COUNTY INCLUDING PINNACLES NATIONAL MONUMENT- 330 PM PDT SAT JUN 21 2008 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM PDT THIS AFTERNOON... THE RED FLAG WARNING INCLUDES THE EAST BAY HILLS AND DIABLO RANGE...THE SANTA CRUZ MOUNTAINS...AND THE MOUNTAINS OF MONTEREY AND SAN BENITO COUNTIES. THE RED FLAG WARNING ALSO INCLUDES THE VALLEYS ADJOINING THESE MOUNTAIN AREAS. SCATTERED SHOWERS AND THUNDERSTORMS WILL CONTINUE THIS AFTERNOON...IN AN AREA ENCOMPASSING SANTA CRUZ COUNTY...SANTA CLARA COUNTY...FAR NORTHERN MONTEREY COUNTY AND NORTHERN SAN BENITO COUNTY. DRY LIGHTNING IS POSSIBLE DUE TO A DEEP DRY LAYER BELOW THE THUNDERSTORM BASES. A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF HOT AND DRY WEATHER ALONG WITH DRY LIGHTNING WILL PRODUCE CRITICAL FIRE WEATHER CONDITIONS. $$ BLIER
The office that day
Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 6:51 PM PDT | Marine Weather Statement | MTR | 69 min | |
| Jun 21, 12:28 PM PDT | Marine Weather Statement | MTR | 3 hr |
Nearby
Red Flag Warnings in California, 2008Every red flag warning in 2008
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.