Alert archive / California / Red Flag Warnings in 2017
Red Flag Warning 1, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this red flag warning at Jul 7, 2017, 9:11 PM PDT. It was in force for 30 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
- Jul 7, 2017, 9:11 PM PDT (04:11 UTC)
- Expired
- Jul 9, 2017, 3:35 AM PDT
- In force
- 30 hr
- Issued by
- NWS San Francisco Bay Area, CA
The text
As transmitted.
979 WWUS86 KMTR 080411 RFWMTR URGENT - FIRE WEATHER MESSAGE National Weather Service San Francisco CA 911 PM PDT Fri Jul 7 2017 ...Breezy and very dry conditions in the East Bay Hills and the Diablo Range through Saturday evening... .Strong high pressure remains over the region and will result in very dry and warm conditions tonight and then hot and dry conditions on Saturday. Breezy and locally gusty west to northwest winds tonight will gradually diminish on Saturday. CAZ511-081300- /O.NEW.KMTR.FW.W.0001.170708T0411Z-170709T0400Z/ East Bay Hills and the Diablo Range- 911 PM PDT Fri Jul 7 2017 ...RED FLAG WARNING IN EFFECT UNTIL 9 PM PDT SATURDAY FOR BREEZY WEST TO NORTHWEST WINDS AND VERY DRY CONDITIONS FOR FIRE WEATHER ZONE 511... The National Weather Service in San Francisco has issued a Red Flag Warning, which is in effect until 9 PM PDT Saturday. * AFFECTED AREA...Fire weather zone 511...The East Bay Hills and the Diablo Range. * WIND...West to Northwest winds 10 to 20 mph with gusts to 25 mph tonight, gradually decreasing on Saturday. * HUMIDITY...Relative humidity values of 15 to 30% tonight, dropping as low as the upper single digits Saturday afternoon. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. 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 can contribute to extreme fire behavior. && $$ BLIER
3 follow-up statements
250 WWUS86 KMTR 081121 RFWMTR URGENT - FIRE WEATHER MESSAGE National Weather Service San Francisco CA 421 AM PDT Sat Jul 8 2017 ...Breezy and very dry conditions in the East Bay Hills and the Diablo Range through this evening... .Strong high pressure remains over the region and will result in very dry and very warm to hot conditions this afternoon and evening. Breezy and locally gusty west to northwest winds will combine with the hot and dry conditions resulting in increased fire danger across the East Bay Hills and the Diablo Range through this evening. Winds are then forecast to diminish late in the day. CAZ511-082200- /O.CON.KMTR.FW.W.0001.000000T0000Z-170709T0400Z/ East Bay Hills and the Diablo Range- 421 AM PDT Sat Jul 8 2017 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING FOR BREEZY WEST TO NORTHWEST WINDS AND VERY DRY CONDITIONS FOR FIRE WEATHER ZONE 511... * AFFECTED AREA...Fire weather zone 511...The East Bay Hills and the Diablo Range. * WIND...West to Northwest winds 10 to 20 mph with gusts to 25 mph tonight, gradually decreasing late this evening. * HUMIDITY...Relative humidity values dropping as low as the upper single digits this afternoon. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$
466 WWUS86 KMTR 090350 RFWMTR URGENT - FIRE WEATHER MESSAGE National Weather Service San Francisco CA 850 PM PDT Sat Jul 8 2017 ...Breezy and very dry conditions in the East Bay Hills and the Diablo Range will continue through Saturday night... .Breezy and locally gusty west to northwest winds will combine with dry conditions resulting in continued high fire danger across the East Bay Hills and the Diablo Range tonight. Winds are then forecast to diminish and humidities improve by Sunday morning. CAZ511-091200- /O.EXT.KMTR.FW.W.0001.000000T0000Z-170709T1200Z/ East Bay Hills and the Diablo Range- 850 PM PDT Sat Jul 8 2017 ...RED FLAG WARNING NOW IN EFFECT UNTIL 5 AM PDT SUNDAY FOR BREEZY WEST TO NORTHWEST WINDS AND VERY DRY CONDITIONS FOR FIRE WEATHER ZONE 511... * AFFECTED AREA...Fire weather zone 511...The East Bay Hills and the Diablo Range. * WIND...West to Northwest winds 10 to 20 mph with local gusts to 30 mph gradually decreasing overnight. * HUMIDITY...Relative humidity values of 15 to 30% this evening....increasing to 25 to 45% overnight. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended. 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 can contribute to extreme fire behavior. && $$
247 WWUS86 KMTR 091035 RFWMTR URGENT - FIRE WEATHER MESSAGE National Weather Service San Francisco CA 335 AM PDT Sun Jul 9 2017 CAZ511-091145- /O.CAN.KMTR.FW.W.0001.000000T0000Z-170709T1200Z/ East Bay Hills and the Diablo Range- 335 AM PDT Sun Jul 9 2017 ...RED FLAG WARNING IS CANCELLED FOR BREEZY WEST TO NORTHWEST WINDS AND VERY DRY CONDITIONS FOR FIRE WEATHER ZONE 511... The National Weather Service in San Francisco has cancelled the Red Flag Warning. Winds have diminished over the region and relative humidity values have improved in response to a deeper marine push. Thus, the Red Flag Warning has been cancelled for the East Bay Hills and the Diablo Range. $$
The office that day
Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 7, 5:52 PM PDT | Heat Advisory | MTR | Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 4 more | 27 hr |
| Jul 8, 2:26 PM PDT | Small Craft Advisory | MTR | 31 hr |
Nearby
Red Flag Warnings in California, 2017Every red flag warning in 2017
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.