Alert archive / California / Red Flag Warnings in 2017
Red Flag Warning 4, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this red flag warning at Sep 23, 2017, 2:49 AM PDT. It took effect at Sep 23, 2017, 2:00 PM PDT. It was in force for 4 days. 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 23, 2017, 2:49 AM PDT (09:49 UTC)
- In effect from
- Sep 23, 2017, 2:00 PM PDT
- Expired
- Sep 27, 2017, 9:46 AM PDT
- In force
- 4 days
- Issued by
- NWS San Francisco Bay Area, CA
The text
As transmitted.
433 WWUS86 KMTR 230949 RFWMTR URGENT - FIRE WEATHER MESSAGE National Weather Service San Francisco CA 249 AM PDT Sat Sep 23 2017 ...Red Flag Warning for the North Bay Hills Starting This Afternoon... .A warming and drying trend will start this afternoon and continue at least into at least Tuesday morning. In addition to the warm temperatures there will be lowering humidity values and periods of gusty northeast winds across the North Bay hills, especially across the Napa county hills and the hills of northern Sonoma County. CAZ507-240400- /O.UPG.KMTR.FW.A.0001.170923T2100Z-170926T0400Z/ /O.NEW.KMTR.FW.W.0004.170923T2100Z-170926T1800Z/ North Bay Mountains- 249 AM PDT Sat Sep 23 2017 ...RED FLAG WARNING IN EFFECT FROM 2 PM THIS AFTERNOON TO 11 AM PDT TUESDAY FOR LOW HUMIDITY AND GUSTY WINDS FOR FIRE WEATHER ZONE 507... The National Weather Service in San Francisco has issued a Red Flag Warning, which is in effect from 2 PM this afternoon to 11 AM PDT Tuesday. The Fire Weather Watch has been upgraded to the warning. * AFFECTED AREA...Fire weather zone 507. The North Bay Hills above 1000 feet in elevation. * WIND...Northeast Winds 10 to 20 mph...gusts 25 mph. Strongest overnight and morning hours. * HUMIDITY...Lowering to around 15 percent afternoons with poor recovery locally less than 30 percent overnight. * HIGHEST THREAT...is located over the Napa hills and around Mount Saint Helena where winds will be strongest and humidity lowest. Downed powerlines in remote areas will likely cause new fire starts. * 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 and low relative humidity can contribute to extreme fire behavior. && $$
11 follow-up statements
769 WWUS86 KMTR 240402 RFWMTR URGENT - FIRE WEATHER MESSAGE National Weather Service San Francisco CA 902 PM PDT Sat Sep 23 2017 ...Red Flag Warning for the North Bay Hills Continues through Tuesday morning... .A warming and drying trend that began on Saturday will continue through at least Tuesday morning. In addition, periods of moderate and gusty northeast winds are expected at times across the North Bay hills, especially across the Napa county hills and the hills of northern Sonoma County. CAZ507-242200- /O.CON.KMTR.FW.W.0004.000000T0000Z-170926T1800Z/ North Bay Mountains- 902 PM PDT Sat Sep 23 2017 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 11 AM PDT TUESDAY FOR LOW HUMIDITY AND GUSTY WINDS FOR FIRE WEATHER ZONE 507... * AFFECTED AREA...Fire weather zone 507. The North Bay Hills above 1000 feet in elevation. * WIND...Northeast Winds 10 to 20 mph...gusts 25 mph. Strongest overnight and morning hours. * HUMIDITY...Lowering to around 15 percent afternoons with poor recovery overnight...locally less than 30 percent. * HIGHEST THREAT...is located over the Napa hills and around Mount Saint Helena where winds will be strongest and humidity lowest. Downed powerlines in remote areas will likely cause new fire starts. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of gusty winds and low relative humidity can contribute to extreme fire behavior. && $$
993 WWUS86 KMTR 242134 RFWMTR URGENT - FIRE WEATHER MESSAGE National Weather Service San Francisco CA 234 PM PDT Sun Sep 24 2017 ...Red Flag Warning now in effect for the East Bay Hills and the North Bay Hills through Wednesday morning... .The warm and dry air mass the over the area will continue to prevail through at least Wednesday. In addition, periods of moderate and gusty mortheast winds are expected at times. Latest model output indicates additional drying and some increase in the offshore winds late Tuesday into Wednesday. CAZ511-251400- /O.EXB.KMTR.FW.W.0004.000000T0000Z-170928T0000Z/ East Bay Hills and the Diablo Range- 234 PM PDT Sun Sep 24 2017 ...RED FLAG WARNING IN EFFECT UNTIL 5 PM PDT WEDNESDAY FOR LOW HUMIDITY AND GUSTY WINDS FOR FIRE WEATHER ZONE 511... The National Weather Service in San Francisco has issued a Red Flag Warning, which is in effect until 5 PM PDT Wednesday. * AFFECTED AREA...Fire weather zone 511. * WIND...Northeast Winds 10 to 15 mph...gusts 20 mph. Strongest overnight and morning hours. * HUMIDITY...Lowering to around 15 percent afternoons with poor recovery overnight...locally less than 30 percent. * HIGHEST THREAT...is located over the East Bay Hills above 1000 ft where winds will be strongest. Downed powerlines in remote areas will likely cause new fire starts. * 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 gusty winds and low relative humidity can contribute to extreme fire behavior. && $$ CAZ507-251400- /O.EXT.KMTR.FW.W.0004.000000T0000Z-170928T0000Z/ North Bay Mountains- 234 PM PDT Sun Sep 24 2017 ...RED FLAG WARNING NOW IN EFFECT UNTIL 5 PM PDT WEDNESDAY FOR LOW HUMIDITY AND GUSTY WINDS FOR FIRE WEATHER ZONE 507... * AFFECTED AREA...Fire weather zone 507. * WIND...Northeast Winds 10 to 20 mph...gusts 25 mph. Strongest overnight and morning hours. * HUMIDITY...Lowering to around 15 percent afternoons with poor recovery overnight...locally less than 30 percent. * HIGHEST THREAT...is located over the Napa hills and around Mount Saint Helena where winds will be strongest and humidity lowest. Downed powerlines in remote areas will likely cause new fire starts. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of gusty winds and low relative humidity can contribute to extreme fire behavior. && $$
335 WWUS86 KMTR 242141 CCA RFWMTR URGENT - FIRE WEATHER MESSAGE...CORRECTED National Weather Service San Francisco CA 241 PM PDT Sun Sep 24 2017 ...Red Flag Warning now in effect for the East Bay Hills and the North Bay Hills through Wednesday afternoon... .The warm and dry air mass the over the area will continue to prevail through at least Wednesday. In addition, periods of moderate and gusty mortheast winds are expected at times. Latest model output indicates additional drying and some increase in the offshore winds late Tuesday into Wednesday. CAZ511-251400- /O.EXB.KMTR.FW.W.0004.000000T0000Z-170928T0000Z/ East Bay Hills and the Diablo Range- 241 PM PDT Sun Sep 24 2017 ...RED FLAG WARNING IN EFFECT UNTIL 5 PM PDT WEDNESDAY FOR LOW HUMIDITY AND GUSTY WINDS FOR FIRE WEATHER ZONE 511... The National Weather Service in San Francisco has issued a Red Flag Warning, which is in effect until 5 PM PDT Wednesday. * AFFECTED AREA...Fire weather zone 511. * WIND...Northeast Winds 10 to 15 mph...gusts 20 mph. Strongest overnight and morning hours. * HUMIDITY...Lowering to around 15 percent afternoons with poor recovery overnight...locally less than 30 percent. * HIGHEST THREAT...is located over the East Bay Hills above 1000 ft where winds will be strongest. Downed powerlines in remote areas will likely cause new fire starts. * 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 gusty winds and low relative humidity can contribute to extreme fire behavior. && $$ CAZ507-251400- /O.EXT.KMTR.FW.W.0004.000000T0000Z-170928T0000Z/ North Bay Mountains- 241 PM PDT Sun Sep 24 2017 ...RED FLAG WARNING NOW IN EFFECT UNTIL 5 PM PDT WEDNESDAY FOR LOW HUMIDITY AND GUSTY WINDS FOR FIRE WEATHER ZONE 507... * AFFECTED AREA...Fire weather zone 507. * WIND...Northeast Winds 10 to 20 mph...gusts 25 mph. Strongest overnight and morning hours. * HUMIDITY...Lowering to around 15 percent afternoons with poor recovery overnight...locally less than 30 percent. * HIGHEST THREAT...is located over the Napa hills and around Mount Saint Helena where winds will be strongest and humidity lowest. Downed powerlines in remote areas will likely cause new fire starts. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of gusty winds and low relative humidity can contribute to extreme fire behavior. && $$
235 WWUS86 KMTR 251039 RFWMTR URGENT - FIRE WEATHER MESSAGE National Weather Service San Francisco CA 339 AM PDT Mon Sep 25 2017 ...Red Flag Warning in effect for the East Bay Hills and the North Bay Hills through Wednesday afternoon... .The warm and dry air mass the over the area will continue through at least Wednesday. In addition, periods of moderate and gusty northeast winds are expected at times. Latest model output indicates additional drying and some increase in the offshore winds late Tuesday into Wednesday. CAZ507-252200- /O.CON.KMTR.FW.W.0004.000000T0000Z-170928T0000Z/ North Bay Mountains- 339 AM PDT Mon Sep 25 2017 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM PDT WEDNESDAY FOR LOW HUMIDITY AND GUSTY WINDS FOR FIRE WEATHER ZONE 507... * AFFECTED AREA...Fire weather zone 507. * WIND...Northeast Winds 10 to 20 mph...gusts 25 mph. Strongest overnight and morning hours. * HUMIDITY...Lowering to around 15 percent afternoons with poor recovery overnight...generally less than 30 percent. * HIGHEST THREAT...is located over the Napa hills and around Mount Saint Helena where winds will be strongest and humidity lowest. Downed powerlines in remote areas will likely cause new fire starts. * 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 gusty winds and low relative humidity can contribute to extreme fire behavior. && $$ CAZ511-252200- /O.CON.KMTR.FW.W.0004.000000T0000Z-170928T0000Z/ East Bay Hills and the Diablo Range- 339 AM PDT Mon Sep 25 2017 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM PDT WEDNESDAY FOR LOW HUMIDITY AND GUSTY WINDS FOR FIRE WEATHER ZONE 511... * AFFECTED AREA...Fire weather zone 511. * WIND...Northeast Winds 10 to 20 mph...gusts 25 mph. Strongest overnight and morning hours. * HUMIDITY...Lowering to around 15 percent afternoons with poor recovery overnight...generally less than 30 percent. * HIGHEST THREAT...is located over the East Bay Hills above 1000 ft where winds will be strongest. Downed powerlines in remote areas will likely cause new fire starts. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of gusty winds and low relative humidity can contribute to extreme fire behavior. && $$
809 WWUS86 KMTR 252159 RFWMTR URGENT - FIRE WEATHER MESSAGE National Weather Service San Francisco CA 259 PM PDT Mon Sep 25 2017 ...Red Flag Warning in effect for the East Bay Hills and the North Bay Hills through Wednesday afternoon... .The warm and dry air mass the over the area will continue through at least Wednesday. In addition, periods of moderate and gusty northeast winds are expected at times. Latest model output indicates additional drying and some increase in the offshore winds late Tuesday into Wednesday. CAZ507-260600- /O.CON.KMTR.FW.W.0004.000000T0000Z-170928T0000Z/ North Bay Mountains- 259 PM PDT Mon Sep 25 2017 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM PDT WEDNESDAY FOR LOW HUMIDITY AND GUSTY WINDS FOR FIRE WEATHER ZONE 507... * AFFECTED AREA...Fire weather zone 507. * WIND...Northeast Winds 10 to 20 mph...gusts 25 mph. Strongest overnight and morning hours. * HUMIDITY...Lowering to around 15 percent afternoons with poor recovery overnight...generally less than 30 percent. * HIGHEST THREAT...is located over the Napa hills and around Mount Saint Helena where winds will be strongest and humidity lowest. Downed powerlines in remote areas will likely cause new fire starts. * 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 gusty winds and low relative humidity can contribute to extreme fire behavior. && $$ CAZ511-260600- /O.CON.KMTR.FW.W.0004.000000T0000Z-170928T0000Z/ East Bay Hills and the Diablo Range- 259 PM PDT Mon Sep 25 2017 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM PDT WEDNESDAY FOR LOW HUMIDITY AND GUSTY WINDS FOR FIRE WEATHER ZONE 511... * AFFECTED AREA...Fire weather zone 511. * WIND...Northeast Winds 10 to 20 mph...gusts 25 mph. Strongest overnight and morning hours. * HUMIDITY...Lowering to around 15 percent afternoons with poor recovery overnight...generally less than 30 percent. * HIGHEST THREAT...is located over the East Bay Hills above 1000 ft where winds will be strongest. Downed powerlines in remote areas will likely cause new fire starts. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of gusty winds and low relative humidity can contribute to extreme fire behavior. && $$
709 WWUS86 KMTR 260359 RFWMTR URGENT - FIRE WEATHER MESSAGE National Weather Service San Francisco CA 859 PM PDT Mon Sep 25 2017 ...Red Flag Warning in effect for the East Bay Hills and the North Bay Hills through Wednesday afternoon... .The warm and dry air mass the over the area will continue through at least Wednesday. In addition, periods of moderate and gusty northeast winds are expected at times. Latest model output indicates additional drying and some increase in the offshore winds late Tuesday into Wednesday. CAZ507-261300- /O.CON.KMTR.FW.W.0004.000000T0000Z-170928T0000Z/ North Bay Mountains- 859 PM PDT Mon Sep 25 2017 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM PDT WEDNESDAY FOR LOW HUMIDITY AND GUSTY WINDS FOR FIRE WEATHER ZONE 507... * AFFECTED AREA...Fire weather zone 507. * WIND...Northeast Winds 10 to 20 mph...gusts 25 mph. Strongest overnight and morning hours. * HUMIDITY...Lowering to around 15 percent afternoons with poor recovery overnight...generally less than 30 percent. * HIGHEST THREAT...is located over the Napa hills and around Mount Saint Helena where winds will be strongest and humidity lowest. Downed powerlines in remote areas will likely cause new fire starts. * 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 gusty winds and low relative humidity can contribute to extreme fire behavior. && $$ CAZ511-261300- /O.CON.KMTR.FW.W.0004.000000T0000Z-170928T0000Z/ East Bay Hills and the Diablo Range- 859 PM PDT Mon Sep 25 2017 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM PDT WEDNESDAY FOR LOW HUMIDITY AND GUSTY WINDS FOR FIRE WEATHER ZONE 511... * AFFECTED AREA...Fire weather zone 511. * WIND...Northeast Winds 10 to 20 mph...gusts 25 mph. Strongest overnight and morning hours. * HUMIDITY...Lowering to around 15 percent afternoons with poor recovery overnight...generally less than 30 percent. * HIGHEST THREAT...is located over the East Bay Hills above 1000 ft where winds will be strongest. Downed powerlines in remote areas will likely cause new fire starts. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of gusty winds and low relative humidity can contribute to extreme fire behavior. && $$
147 WWUS86 KMTR 261054 RFWMTR URGENT - FIRE WEATHER MESSAGE National Weather Service San Francisco CA 354 AM PDT Tue Sep 26 2017 ...Red Flag Warning in effect for the North and East Bay Hills through Wednesday afternoon... .The warm and dry air mass the over the area will continue through at least Wednesday. In addition, periods of moderate and gusty northeast winds are expected at times. Latest model output indicates additional drying and some increase in the offshore winds Tuesday evening into early Wednesday morning. CAZ507-262200- /O.CON.KMTR.FW.W.0004.000000T0000Z-170928T0000Z/ North Bay Mountains- 354 AM PDT Tue Sep 26 2017 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM PDT WEDNESDAY FOR LOW HUMIDITY AND GUSTY WINDS FOR FIRE WEATHER ZONE 507... * AFFECTED AREA...Fire weather zone 507. * WIND...Northeast Winds 10 to 20 mph...gusts 25 mph. Strongest overnight and morning hours. * HUMIDITY...Lowering to around 15 percent afternoons with poor recovery overnight...generally less than 30 percent. * HIGHEST THREAT...is located over the Napa hills and around Mount Saint Helena where winds will be strongest and humidity lowest. Downed powerlines in remote areas will likely cause new fire starts. * 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 gusty winds and low relative humidity can contribute to extreme fire behavior. && $$ CAZ511-262200- /O.CON.KMTR.FW.W.0004.000000T0000Z-170928T0000Z/ East Bay Hills and the Diablo Range- 354 AM PDT Tue Sep 26 2017 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM PDT WEDNESDAY FOR LOW HUMIDITY AND GUSTY WINDS FOR FIRE WEATHER ZONE 511... * AFFECTED AREA...Fire weather zone 511. * WIND...Northeast Winds 10 to 20 mph...gusts 25 mph. Strongest overnight and morning hours. * HUMIDITY...Lowering to around 15 percent afternoons with poor recovery overnight...generally less than 30 percent. * HIGHEST THREAT...is located over the East Bay Hills above 1000 ft where winds will be strongest. Downed powerlines in remote areas will likely cause new fire starts. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of gusty winds and low relative humidity can contribute to extreme fire behavior. && $$
502 WWUS86 KMTR 262112 RFWMTR URGENT - FIRE WEATHER MESSAGE National Weather Service San Francisco CA 212 PM PDT Tue Sep 26 2017 ...Red Flag Warning in effect for the North and East Bay Hills through Wednesday afternoon... .The warm and dry air mass the over the area will continue through at least Wednesday. In addition, periods of moderate and gusty northeast winds are expected at times. Latest model output indicates additional drying and some increase in the offshore winds Tuesday evening into early Wednesday morning. CAZ507-270600- /O.CON.KMTR.FW.W.0004.000000T0000Z-170928T0000Z/ North Bay Mountains- 212 PM PDT Tue Sep 26 2017 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM PDT WEDNESDAY FOR LOW HUMIDITY AND GUSTY WINDS FOR FIRE WEATHER ZONE 507... * AFFECTED AREA...Fire weather zone 507. * WIND...Northeast Winds 10 to 20 mph...gusts 25 mph. Strongest overnight and morning hours. * HUMIDITY...Lowering to around 15 percent afternoons with poor recovery overnight...generally less than 30 percent. * HIGHEST THREAT...is located over the Napa hills and around Mount Saint Helena where winds will be strongest and humidity lowest. Downed powerlines in remote areas will likely cause new fire starts. * 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 gusty winds and low relative humidity can contribute to extreme fire behavior. && $$ CAZ511-270600- /O.CON.KMTR.FW.W.0004.000000T0000Z-170928T0000Z/ East Bay Hills and the Diablo Range- 212 PM PDT Tue Sep 26 2017 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM PDT WEDNESDAY FOR LOW HUMIDITY AND GUSTY WINDS FOR FIRE WEATHER ZONE 511... * AFFECTED AREA...Fire weather zone 511. * WIND...Northeast Winds 10 to 20 mph...gusts 35 mph. Strongest overnight and morning hours. * HUMIDITY...Lowering to around 15 percent afternoons with poor recovery overnight...generally less than 30 percent. * HIGHEST THREAT...is located over the East Bay Hills above 1000 ft where winds will be strongest. Downed powerlines in remote areas will likely cause new fire starts. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of gusty winds and low relative humidity can contribute to extreme fire behavior. && $$
270 WWUS86 KMTR 270358 RFWMTR URGENT - FIRE WEATHER MESSAGE National Weather Service San Francisco CA 858 PM PDT Tue Sep 26 2017 ...Red Flag Warning in effect for the North and East Bay Hills through Wednesday afternoon... .The warm and dry air mass the over the area will continue through at least Wednesday. In addition, periods of moderate and gusty northeast winds are expected at times. Latest model output indicates additional drying and some increase in the offshore winds Tuesday evening into early Wednesday morning. CAZ507-271400- /O.CON.KMTR.FW.W.0004.000000T0000Z-170928T0000Z/ North Bay Mountains- 858 PM PDT Tue Sep 26 2017 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM PDT WEDNESDAY FOR LOW HUMIDITY AND GUSTY WINDS FOR FIRE WEATHER ZONE 507... * AFFECTED AREA...Fire weather zone 507. * WIND...Northeast Winds 10 to 20 mph...gusts 25 mph. Strongest overnight and morning hours. * HUMIDITY...Lowering to around 15 percent afternoons with poor recovery overnight...generally less than 30 percent. * HIGHEST THREAT...is located over the Napa hills and around Mount Saint Helena where winds will be strongest and humidity lowest. Downed powerlines in remote areas will likely cause new fire starts. * 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 gusty winds and low relative humidity can contribute to extreme fire behavior. && $$ CAZ511-271400- /O.CON.KMTR.FW.W.0004.000000T0000Z-170928T0000Z/ East Bay Hills and the Diablo Range- 858 PM PDT Tue Sep 26 2017 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM PDT WEDNESDAY FOR LOW HUMIDITY AND GUSTY WINDS FOR FIRE WEATHER ZONE 511... * AFFECTED AREA...Fire weather zone 511. * WIND...Northeast Winds 10 to 20 mph...gusts 35 mph. Strongest overnight and morning hours. * HUMIDITY...Lowering to around 15 percent afternoons with poor recovery overnight...generally less than 30 percent. * HIGHEST THREAT...is located over the East Bay Hills above 1000 ft where winds will be strongest. Downed powerlines in remote areas will likely cause new fire starts. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of gusty winds and low relative humidity can contribute to extreme fire behavior. && $$
175 WWUS86 KMTR 271037 RFWMTR URGENT - FIRE WEATHER MESSAGE National Weather Service San Francisco CA 337 AM PDT Wed Sep 27 2017 ...Red Flag Warning in effect for the North and East Bay Hills through this afternoon for hot, dry and breezy conditions... .Continued hot and dry today with dry offshore winds through midday. Winds will transition to onshore or westerly by this afternoon especially near the coast and bays. CAZ507-272200- /O.CON.KMTR.FW.W.0004.000000T0000Z-170928T0000Z/ North Bay Mountains- 337 AM PDT Wed Sep 27 2017 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM PDT THIS AFTERNOON FOR LOW HUMIDITY AND GUSTY WINDS FOR FIRE WEATHER ZONE 507... * AFFECTED AREA...Fire weather zone 507. * WIND...Northeast Winds 10 to 20 mph...gusts 25 mph. Strongest early morning hours...then shifting westerly 15 mph late afternoon. * HUMIDITY...Lowering to around 15 percent this afternoon. * HIGHEST THREAT...is located over the Napa hills and around Mount Saint Helena where winds will be strongest and humidity lowest. * 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 gusty winds and low relative humidity can contribute to extreme fire behavior. && $$ CAZ511-272200- /O.CON.KMTR.FW.W.0004.000000T0000Z-170928T0000Z/ East Bay Hills and the Diablo Range- 337 AM PDT Wed Sep 27 2017 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM PDT THIS AFTERNOON FOR LOW HUMIDITY AND GUSTY WINDS FOR FIRE WEATHER ZONE 511... * AFFECTED AREA...Fire weather zone 511. * WIND...Northeast Winds 10 to 20 mph...gusts 35 mph. Strongest early morning hours...turning westerly 10-15 mph late afternoon. * HUMIDITY...Lowering to around 15 percent this afternoon. * HIGHEST THREAT...is located over the East Bay Hills above 1000 ft where winds will be strongest. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of gusty winds and low relative humidity can contribute to extreme fire behavior. && $$
608 WWUS86 KMTR 271646 RFWMTR URGENT - FIRE WEATHER MESSAGE National Weather Service San Francisco CA 946 AM PDT Wed Sep 27 2017 CAZ507-511-271800- /O.CAN.KMTR.FW.W.0004.000000T0000Z-170928T0000Z/ North Bay Mountains-East Bay Hills and the Diablo Range- 946 AM PDT Wed Sep 27 2017 ...RED FLAG WARNING IS CANCELLED FOR LOW HUMIDITY AND GUSTY WINDS FOR FIRE WEATHER ZONE 507 AND 511... The National Weather Service in San Francisco has cancelled the Red Flag Warning. Widespread gusty winds have diminished across the North Bay mountains and East Bay hills. Therefore, the Red Flag Warning has been cancelled. However, hot and dry conditions will persist today creating heightened fire weather concerns. There will likely be some localized gusts later this afternoon. $$
The office that day
Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 23, 3:08 AM PDT | Small Craft Advisory | MTR | 24 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.