Alert archive / California / Red Flag Warnings in 2012
Red Flag Warning 3, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this red flag warning at Aug 4, 2012, 11:08 AM PDT for Monterey County, San Benito County, California. It was in force for 7 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
- Aug 4, 2012, 11:08 AM PDT (18:08 UTC)
- Expired
- Aug 4, 2012, 6:13 PM PDT
- In force
- 7 hr
- Issued by
- NWS San Francisco Bay Area, CA
Counties Monterey County, CA, San Benito County, CA
The radar
The San Francisco radar (KMUX), 103 km from the middle of the area, began a volume at 18:09 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, 6.1 hours before the alert went out and 171 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
- 1020 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- -12 m²/s²
- 0-3 km storm-relative helicity
- 43 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
099 WWUS86 KMTR 041808 RFWMTR URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 1108 AM PDT SAT AUG 4 2012 ...RED FLAG WARNING IN EFFECT FOR THE MOUNTAINS OF SAN BENITO AND INTERIOR MONTEREY COUNTIES THROUGH THIS EVENING... .ISOLATED THUNDERSTORMS WITH DRY LIGHTNING WILL CONTINUE TO OCCUR ACROSS THE MOUNTAINS OF INTERIOR MONTEREY COUNTY AND SAN BENITO COUNTY TODAY. NUMEROUS CLOUD TO GROUND LIGHTNING STRIKES ARE EXPECTED IN THESE STORMS. LOW RELATIVE HUMIDITY IS EXPECTED TO CONTINUE ACROSS THE HIGHER TERRAIN LOCATIONS WITH RELATIVE HUMIDITY BELOW 25 PERCENT TODAY. LOCALLY GUSTY WINDS WILL ACCOMPANY THE STORMS AS WELL. CAZ517-518-050300- /O.NEW.KMTR.FW.W.0003.120804T1808Z-120805T0300Z/ SANTA LUCIA MOUNTAINS AND LOS PADRES NATIONAL FOREST- MOUNTAINS OF SAN BENITO AND INTERIOR MONTEREY COUNTY INCLUDING PINNACLES NATIONAL MONUMENT- 1108 AM PDT SAT AUG 4 2012 ...RED FLAG WARNING IN EFFECT UNTIL 8 PM PDT THIS EVENING FOR THUNDERSTORMS WITH DRY LIGHTNING FOR THE MOUNTAINS OF SAN BENITO COUNTY AND INTERIOR MONTEREY COUNTY ABOVE 2000 FEET. THE NATIONAL WEATHER SERVICE THE SAN FRANCISCO BAY AREA HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT UNTIL 8 PM PDT THIS EVENING. * AFFECTED AREA: FIRE ZONE 517 SANTA LUCIA MOUNTAINS AND LOS PADRES NATIONAL FOREST...FIRE ZONE 518 MOUNTAINS OF SAN BENITO AND INTERIOR MONTEREY COUNTY INCLUDING PINNACLES NATIONAL MONUMENT. * TIMING: FROM LATE MORNING SATURDAY THROUGH EVENING HOURS. * THUNDERSTORMS: ISOLATED STORMS WITH DRY LIGHTNING STRIKES OVER THE HIGH TERRAIN ABOVE 2000 FEET. CHANCES DIMINISHING THIS EVENING. * OUTFLOW WINDS: GUSTY LOCAL WINDS OF 30 TO 40 MPH WILL BE POSSIBLE IN THE IMMEDIATE VICINITY OF THUNDERSTORMS. * IMPACTS: THE COMBINATION OF DRY LIGHTNING STRIKES AND LOW RELATIVE HUMIDITY IN THE HIGHER TERRAIN WILL CREATE CRITICAL FIRE WEATHER CONDITIONS...PRIMARILY ABOVE 2000 FEET IN THE MOUNTAINS OF SAN BENITO AND INTERIOR MONTEREY COUNTIES. 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. && $$ HTTP://WEATHER.GOV/SANFRANCISCO
1 follow-up statement
291 WWUS86 KMTR 050113 RFWMTR URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 613 PM PDT SAT AUG 4 2012 ...RED FLAG WARNING FOR SANTA LUCIA MOUNTAINS AND LOS PADRES NATIONAL FOREST...MOUNTAINS OF SAN BENITO AND INTERIOR MONTEREY COUNTY INCLUDING PINNACLES NATIONAL MONUMENT HAS BEEN CANCELLED... CAZ517-518-050215- /O.CAN.KMTR.FW.W.0003.000000T0000Z-120805T0300Z/ SANTA LUCIA MOUNTAINS AND LOS PADRES NATIONAL FOREST- MOUNTAINS OF SAN BENITO AND INTERIOR MONTEREY COUNTY INCLUDING PINNACLES NATIONAL MONUMENT- 613 PM PDT SAT AUG 4 2012 ...RED FLAG WARNING IS CANCELLED FOR THUNDERSTORMS WITH DRY LIGHTNING FOR SANTA LUCIA MOUNTAINS AND LOS PADRES NATIONAL FOREST...MOUNTAINS OF SAN BENITO AND INTERIOR MONTEREY COUNTY INCLUDING PINNACLES NATIONAL MONUMENT... THE NATIONAL WEATHER SERVICE THE SAN FRANCISCO BAY AREA HAS CANCELLED THE RED FLAG WARNING. * AFFECTED AREA: FIRE ZONE 517 SANTA LUCIA MOUNTAINS AND LOS PADRES NATIONAL FOREST...FIRE ZONE 518 MOUNTAINS OF SAN BENITO AND INTERIOR MONTEREY COUNTY INCLUDING PINNACLES NATIONAL MONUMENT. * TIMING: CANCELLED $$ 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 |
|---|---|---|---|---|
| Aug 4, 3:05 AM PDT | Small Craft Advisory | MTR | 20 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.