Alert archive / California / Red Flag Warnings in 2017
Red Flag Warning 6, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this red flag warning at Oct 6, 2017, 9:49 AM PDT for 8 counties in California. It took effect at Oct 8, 2017, 11:00 AM PDT. It was in force for 42 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
- Oct 6, 2017, 9:49 AM PDT (16:49 UTC)
- In effect from
- Oct 8, 2017, 11:00 AM PDT
- Expired
- Oct 10, 2017, 5:00 AM PDT
- In force
- 42 hr
- Issued by
- NWS San Francisco Bay Area, CA
Counties Alameda County, CA, Contra Costa County, CA, Marin County, CA, Napa County, CA, San Mateo County, CA, Santa Clara County, CA, Santa Cruz County, CA, Sonoma County, CA
The radar
The San Francisco radar (KMUX), 77 km from the middle of the area, began a volume at 16:55 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, 4.8 hours before the alert went out and 8 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
- 2597 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 9 m²/s²
- 0-3 km storm-relative helicity
- 2 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
499 WWUS86 KMTR 061649 RFWMTR URGENT - FIRE WEATHER MESSAGE National Weather Service San Francisco CA 949 AM PDT Fri Oct 6 2017 ...Red Flag Warning Sunday through late Monday night... .A classic autumn fire weather pattern is forecast to develop later this weekend into early next week. Warm temperatures, low humidity and gusty north winds will coincide with critically dry fuels. Current indications suggest this will be the strongest offshore wind event so far this fall. CAZ507-070400- /O.UPG.KMTR.FW.A.0003.171008T1800Z-171010T1200Z/ /O.NEW.KMTR.FW.W.0006.171008T1800Z-171010T1200Z/ North Bay Mountains- 949 AM PDT Fri Oct 6 2017 ...RED FLAG WARNING IN EFFECT FROM 11 AM SUNDAY TO 5 AM PDT TUESDAY FOR STRONG OFFSHORE WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 507... The National Weather Service in San Francisco has issued a Red Flag Warning, which is in effect from 11 AM Sunday to 5 AM PDT Tuesday. The Fire Weather Watch is no longer in effect. * WIND...Northeast winds 15 to 30 mph gusts 40 to 55 mph. * HUMIDITY...10-20 percent afternoon with night time recovery under 30 percent. * HIGHEST THREAT...is located in the Napa County hills as well as around Mount Saint Helena and the hills of Marin around Mount Tamalpais. * 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. && $$ CAZ511-070400- /O.UPG.KMTR.FW.A.0003.171008T1800Z-171010T1200Z/ /O.NEW.KMTR.FW.W.0006.171008T1800Z-171010T1200Z/ East Bay Hills and the Diablo Range- 949 AM PDT Fri Oct 6 2017 ...RED FLAG WARNING IN EFFECT FROM 11 AM SUNDAY TO 5 AM PDT TUESDAY FOR STRONG OFFSHORE WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 511... The National Weather Service in San Francisco has issued a Red Flag Warning, which is in effect from 11 AM Sunday to 5 AM PDT Tuesday. The Fire Weather Watch is no longer in effect. * WIND...North to Northeast winds 15 to 30 mph frequent gusts 40-55 mph expected above 2000 feet. * HUMIDITY...12 to 20 percent afternoons. Recovering 20-30 percent overnight. * HIGHEST THREAT...is located around Mount Diablo and the East Bay Hills between interstate 880 and 680. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. && PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ CAZ512-070400- /O.NEW.KMTR.FW.W.0006.171008T1800Z-171010T1200Z/ Santa Cruz Mountains- 949 AM PDT Fri Oct 6 2017 ...RED FLAG WARNING IN EFFECT FROM 11 AM SUNDAY TO 5 AM PDT TUESDAY FOR STRONG OFFSHORE WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 512... The National Weather Service in San Francisco has issued a Red Flag Warning, which is in effect from 11 AM Sunday to 5 AM PDT Tuesday. * WIND...North to Northeast winds 10 to 20 mph frequent gusts 30-40 mph expected above 2000 feet. * HUMIDITY...15 to 25 percent afternoons. Recovering 20-30 percent overnight. * HIGHEST THREAT...is located above 2000 feet, especially Ben Lomond. * 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. && $$ CAZ510-070400- /O.NEW.KMTR.FW.W.0006.171008T1800Z-171010T1200Z/ East Bay Interior Valleys- 949 AM PDT Fri Oct 6 2017 ...RED FLAG WARNING IN EFFECT FROM 11 AM SUNDAY TO 5 AM PDT TUESDAY FOR STRONG OFFSHORE WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 510... The National Weather Service in San Francisco has issued a Red Flag Warning, which is in effect from 11 AM Sunday to 5 AM PDT Tuesday. * WIND...North to Northeast winds 10 to 20 mph frequent gusts 30 mph. * HUMIDITY...12 to 20 percent afternoons. Recovering 25-35 percent overnight. * HIGHEST THREAT...Windy locations through the Delta including far eastern portions of Contra Costa County. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ CAZ506-070400- /O.NEW.KMTR.FW.W.0006.171008T1800Z-171010T1200Z/ North Bay Interior Valleys- 949 AM PDT Fri Oct 6 2017 ...RED FLAG WARNING IN EFFECT FROM 11 AM SUNDAY TO 5 AM PDT TUESDAY FOR STRONG OFFSHORE WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 506... The National Weather Service in San Francisco has issued a Red Flag Warning, which is in effect from 11 AM Sunday to 5 AM PDT Tuesday. * WIND...North to Northeast winds 10 to 20 mph frequent gusts 30 mph. * HUMIDITY...12 to 20 percent afternoons. Recovering 25-35 percent overnight. * HIGHEST THREAT...Windy locations through the Napa Valley and Northern Sonoma. * 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. && $$
7 follow-up statements
788 WWUS86 KMTR 070357 RFWMTR URGENT - FIRE WEATHER MESSAGE National Weather Service San Francisco CA 857 PM PDT Fri Oct 6 2017 ...Red Flag Warning Sunday through late Monday night... .A classic autumn fire weather pattern is forecast to develop later this weekend into early next week. Warm temperatures, low humidity and gusty north winds will coincide with critically dry fuels. Current indications suggest this will be the strongest offshore wind event so far this fall. CAZ507-072230- /O.CON.KMTR.FW.W.0006.171008T1800Z-171010T1200Z/ North Bay Mountains- 857 PM PDT Fri Oct 6 2017 ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM SUNDAY TO 5 AM PDT TUESDAY FOR STRONG OFFSHORE WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 507... * WIND...Northeast winds 15 to 30 mph gusts 40 to 55 mph. * HUMIDITY...10-20 percent afternoon with night time recovery under 30 percent. * HIGHEST THREAT...is located in the Napa County hills as well as around Mount Saint Helena and the hills of Marin around Mount Tamalpais. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ CAZ511-072230- /O.CON.KMTR.FW.W.0006.171008T1800Z-171010T1200Z/ East Bay Hills and the Diablo Range- 857 PM PDT Fri Oct 6 2017 ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM SUNDAY TO 5 AM PDT TUESDAY FOR STRONG OFFSHORE WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 511... * WIND...North to Northeast winds 15 to 30 mph frequent gusts 40-55 mph expected above 2000 feet. * HUMIDITY...12 to 20 percent afternoons. Recovering 20-30 percent overnight. * HIGHEST THREAT...is located around Mount Diablo and the East Bay Hills between interstate 880 and 680. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. 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. && $$ CAZ512-072230- /O.CON.KMTR.FW.W.0006.171008T1800Z-171010T1200Z/ Santa Cruz Mountains- 857 PM PDT Fri Oct 6 2017 ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM SUNDAY TO 5 AM PDT TUESDAY FOR STRONG OFFSHORE WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 512... * WIND...North to Northeast winds 10 to 20 mph frequent gusts 30-40 mph expected above 2000 feet. * HUMIDITY...15 to 25 percent afternoons. Recovering 20-30 percent overnight. * HIGHEST THREAT...is located above 2000 feet, especially Ben Lomond. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ CAZ510-072230- /O.CON.KMTR.FW.W.0006.171008T1800Z-171010T1200Z/ East Bay Interior Valleys- 857 PM PDT Fri Oct 6 2017 ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM SUNDAY TO 5 AM PDT TUESDAY FOR STRONG OFFSHORE WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 510... * WIND...North to Northeast winds 10 to 20 mph frequent gusts 30 mph. * HUMIDITY...12 to 20 percent afternoons. Recovering 25-35 percent overnight. * HIGHEST THREAT...Windy locations through the Delta including far eastern portions of Contra Costa County. * 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. && $$ CAZ506-072230- /O.CON.KMTR.FW.W.0006.171008T1800Z-171010T1200Z/ North Bay Interior Valleys- 857 PM PDT Fri Oct 6 2017 ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM SUNDAY TO 5 AM PDT TUESDAY FOR STRONG OFFSHORE WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 506... * WIND...North to Northeast winds 10 to 20 mph frequent gusts 30 mph. * HUMIDITY...12 to 20 percent afternoons. Recovering 25-35 percent overnight. * HIGHEST THREAT...Windy locations through the Napa Valley and Northern Sonoma. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$
538 WWUS86 KMTR 072224 RFWMTR URGENT - FIRE WEATHER MESSAGE National Weather Service San Francisco CA 324 PM PDT Sat Oct 7 2017 ...Red Flag Warning Sunday through late Monday night... .A classic autumn fire weather pattern is forecast to develop later this weekend. Warm temperatures, low humidity and locally strong north to northeast winds will coincide with critically dry fuels. Current indications suggest this will be the strongest offshore wind event so far this fall. Strongest winds are expected across the North and East Bay, and locally in the Santa Cruz Mountains. Winds will decrease Monday and Monday night, but a very dry airmass will persist into Monday night. CAZ507-081300- /O.CON.KMTR.FW.W.0006.171008T1800Z-171010T1200Z/ North Bay Mountains- 324 PM PDT Sat Oct 7 2017 ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM SUNDAY TO 5 AM PDT TUESDAY FOR STRONG OFFSHORE WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 507... * WIND...Northeast winds 15 to 30 mph gusts 40 to 55 mph. * HUMIDITY...10-20 percent afternoon with night time recovery under 30 percent. * HIGHEST THREAT...will be across the Napa and Sonoma County hills as well as around Mount Tamalpais in Marin County. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. 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. && $$ CAZ511-081300- /O.CON.KMTR.FW.W.0006.171008T1800Z-171010T1200Z/ East Bay Hills and the Diablo Range- 324 PM PDT Sat Oct 7 2017 ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM SUNDAY TO 5 AM PDT TUESDAY FOR STRONG OFFSHORE WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 511... * WIND...North to Northeast winds 15 to 25 mph frequent gusts 35-45 mph expected above 2000 feet. * HUMIDITY...12 to 20 percent afternoons. Recovering 20-30 percent overnight. * HIGHEST THREAT...is located around Mount Diablo and the East Bay Hills between interstate 880 and 680. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ CAZ512-081300- /O.CON.KMTR.FW.W.0006.171008T1800Z-171010T1200Z/ Santa Cruz Mountains- 324 PM PDT Sat Oct 7 2017 ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM SUNDAY TO 5 AM PDT TUESDAY FOR STRONG OFFSHORE WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 512... * WIND...North to Northeast winds 10 to 20 mph frequent gusts 25-35 mph expected above 2000 feet. * HUMIDITY...15 to 20 percent afternoons. Recovering 20-30 percent overnight. * HIGHEST THREAT...is located above 2000 feet. * 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. && $$ CAZ510-081300- /O.CON.KMTR.FW.W.0006.171008T1800Z-171010T1200Z/ East Bay Interior Valleys- 324 PM PDT Sat Oct 7 2017 ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM SUNDAY TO 5 AM PDT TUESDAY FOR STRONG OFFSHORE WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 510... * WIND...North to Northeast winds 10 to 20 mph frequent gusts 30 mph. * HUMIDITY...10 to 20 percent afternoons. Recovering 30-45 percent overnight. * HIGHEST THREAT...Windy locations through the Delta including far eastern portions of Contra Costa County. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ CAZ506-081300- /O.CON.KMTR.FW.W.0006.171008T1800Z-171010T1200Z/ North Bay Interior Valleys- 324 PM PDT Sat Oct 7 2017 ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM SUNDAY TO 5 AM PDT TUESDAY FOR STRONG OFFSHORE WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 506... * WIND...North to Northeast winds 10 to 20 mph frequent gusts 30 mph. * HUMIDITY...10 to 20 percent afternoons. Recovering 25-40 percent overnight. * HIGHEST THREAT...Windy locations through the Napa Valley and northern Sonoma County valleys. * 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. && $$
908 WWUS86 KMTR 081123 RFWMTR URGENT - FIRE WEATHER MESSAGE National Weather Service San Francisco CA 423 AM PDT Sun Oct 8 2017 ...Red Flag Warning Today Through Late Monday Night... .A classic autumn fire weather pattern is forecast to develop by late today. Warm temperatures, low humidity and locally strong north to northeast winds will coincide with critically dry fuels. Current indications suggest this will be the strongest offshore wind event so far this fall. Strongest winds are expected across the North and East Bay, and locally in the Santa Cruz Mountains. Winds will decrease Monday and Monday night, but a very dry airmass will persist into Monday night. CAZ507-082230- /O.CON.KMTR.FW.W.0006.171008T1800Z-171010T1200Z/ North Bay Mountains- 423 AM PDT Sun Oct 8 2017 ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 5 AM PDT TUESDAY FOR STRONG OFFSHORE WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 507... * WIND...Northeast winds 20 to 35 mph with frequent gusts of 40 to 55 mph. * HUMIDITY...10-20 percent afternoon with night time recovery under 30 percent. * HIGHEST THREAT...will be across the Napa and Sonoma County hills as well as around Mount Tamalpais in Marin County. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ CAZ511-082230- /O.CON.KMTR.FW.W.0006.171008T1800Z-171010T1200Z/ East Bay Hills and the Diablo Range- 423 AM PDT Sun Oct 8 2017 ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 5 AM PDT TUESDAY FOR STRONG OFFSHORE WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 511... * WIND...North to Northeast winds 15 to 25 mph with frequent gusts of 35 to 45 mph. * HUMIDITY...12 to 20 percent afternoons. Recovering 20-30 percent overnight. * HIGHEST THREAT...is located around Mount Diablo and the East Bay Hills between interstate 880 and 680. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. 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. && $$ CAZ512-082230- /O.CON.KMTR.FW.W.0006.171008T1800Z-171010T1200Z/ Santa Cruz Mountains- 423 AM PDT Sun Oct 8 2017 ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 5 AM PDT TUESDAY FOR STRONG OFFSHORE WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 512... * WIND...North to Northeast winds 10 to 20 mph frequent gusts 25-35 mph expected above 2000 feet. * HUMIDITY...15 to 20 percent afternoons. Recovering 20-30 percent overnight. * HIGHEST THREAT...is located above 2000 feet. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ CAZ510-082230- /O.CON.KMTR.FW.W.0006.171008T1800Z-171010T1200Z/ East Bay Interior Valleys- 423 AM PDT Sun Oct 8 2017 ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 5 AM PDT TUESDAY FOR STRONG OFFSHORE WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 510... * WIND...North to Northeast winds 10 to 20 mph frequent gusts 30 mph. * HUMIDITY...10 to 20 percent afternoons. Recovering 30-45 percent overnight. * HIGHEST THREAT...Windy locations through the Delta including far eastern portions of Contra Costa County. * 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. && $$ CAZ506-082230- /O.CON.KMTR.FW.W.0006.171008T1800Z-171010T1200Z/ North Bay Interior Valleys- 423 AM PDT Sun Oct 8 2017 ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 5 AM PDT TUESDAY FOR STRONG OFFSHORE WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 506... * WIND...North to Northeast winds 10 to 20 mph frequent gusts 30 mph. * HUMIDITY...10 to 20 percent afternoons. Recovering 25-40 percent overnight. * HIGHEST THREAT...Windy locations through the Napa Valley and northern Sonoma County valleys. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$
651 WWUS86 KMTR 082151 RFWMTR URGENT - FIRE WEATHER MESSAGE National Weather Service San Francisco CA 251 PM PDT Sun Oct 8 2017 ...Red Flag Warning Today Until 5 am Tuesday morning... .A stronger than usual offshore wind flow pattern will develop tonight into Monday. Warm temperatures, low humidity and locally strong north to northeast winds will coincide with critically dry fuels. Models forecast this to be the strongest offshore wind event so far this fall. The strongest winds are expected across the North and East Bay, and locally in the Santa Cruz Mountains, however winds will also pick up over the valleys resulting in red flag warning conditions there as well. Winds will generally decrease by Monday night, but a very dry airmass will persist into early Tuesday morning. CAZ507-091300- /O.CON.KMTR.FW.W.0006.000000T0000Z-171010T1200Z/ North Bay Mountains- 251 PM PDT Sun Oct 8 2017 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 AM PDT TUESDAY FOR STRONG OFFSHORE WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 507... * WIND...Northeast winds 20 to 35 mph with frequent gusts of 40 to 55 mph. * HUMIDITY...10-20 percent afternoon with night time recovery under 30 percent. * HIGHEST THREAT...will be across the Napa and Sonoma County hills as well as around Mount Tamalpais in Marin County. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. 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. && $$ CAZ511-091300- /O.CON.KMTR.FW.W.0006.000000T0000Z-171010T1200Z/ East Bay Hills and the Diablo Range- 251 PM PDT Sun Oct 8 2017 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 AM PDT TUESDAY FOR STRONG OFFSHORE WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 511... * WIND...North to Northeast winds 15 to 25 mph with frequent gusts of 35 to 45 mph. * HUMIDITY...12 to 20 percent afternoons. Recovering 20-30 percent overnight. * HIGHEST THREAT...is located around Mount Diablo and the East Bay Hills between interstate 880 and 680. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ CAZ512-091300- /O.CON.KMTR.FW.W.0006.000000T0000Z-171010T1200Z/ Santa Cruz Mountains- 251 PM PDT Sun Oct 8 2017 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 AM PDT TUESDAY FOR STRONG OFFSHORE WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 512... * WIND...North to Northeast winds 10 to 20 mph frequent gusts 25-35 mph expected above 2000 feet. * HUMIDITY...15 to 20 percent afternoons. Recovering 20-30 percent overnight. * HIGHEST THREAT...is located above 2000 feet. * 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. && $$ CAZ510-091300- /O.CON.KMTR.FW.W.0006.000000T0000Z-171010T1200Z/ East Bay Interior Valleys- 251 PM PDT Sun Oct 8 2017 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 AM PDT TUESDAY FOR GUSTY OFFSHORE WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 510... * WIND...North to Northeast winds 10 to 20 mph frequent gusts 30 mph. * HUMIDITY...10 to 20 percent afternoons. Recovering 30-45 percent overnight. * HIGHEST THREAT...Windy locations through the Delta including far eastern portions of Contra Costa County. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ CAZ506-091300- /O.CON.KMTR.FW.W.0006.000000T0000Z-171010T1200Z/ North Bay Interior Valleys- 251 PM PDT Sun Oct 8 2017 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 AM PDT TUESDAY FOR GUSTY OFFSHORE WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 506... * WIND...North to Northeast winds 10 to 20 mph frequent gusts 30 mph. * HUMIDITY...10 to 20 percent afternoons. Recovering 25-40 percent overnight. * HIGHEST THREAT...Windy locations through the Napa Valley and northern Sonoma County valleys. * 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. && $$
499 WWUS86 KMTR 091224 RFWMTR URGENT - FIRE WEATHER MESSAGE National Weather Service San Francisco CA 524 AM PDT Mon Oct 9 2017 ...Red Flag Warning Until 5 am Tuesday morning... .Strong and gusty northeast winds will continue through this morning, especially in the North and East Bay. Warm temperatures, low humidity and locally strong winds will coincide with critically dry fuels. Winds will decrease by this afternoon, but a very dry airmass will persist into tonight. CAZ507-092330- /O.CON.KMTR.FW.W.0006.000000T0000Z-171010T1200Z/ North Bay Mountains- 524 AM PDT Mon Oct 9 2017 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 AM PDT TUESDAY FOR STRONG OFFSHORE WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 507... * WIND...Northeast winds 20 to 35 mph this morning, with frequent gusts of 40 to 55 mph. Winds becoming east 10 to 20 mph by midday. * HUMIDITY...8-15 percent afternoon with night time recovery under 30 percent. * HIGHEST THREAT...will be across the Napa and Sonoma County hills as well as around Mount Tamalpais in Marin County. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ CAZ511-092330- /O.CON.KMTR.FW.W.0006.000000T0000Z-171010T1200Z/ East Bay Hills and the Diablo Range- 524 AM PDT Mon Oct 9 2017 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 AM PDT TUESDAY FOR STRONG OFFSHORE WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 511... * WIND...North to Northeast winds 15 to 25 mph this morning, with frequent gusts of 35 to 45 mph. Winds becoming east 10 to 20 mph by midday. * HUMIDITY...8 to 15 percent afternoons. Recovering 20-30 percent overnight. * HIGHEST THREAT...is located around Mount Diablo and the East Bay Hills between interstate 880 and 680. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. 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. && $$ CAZ512-092330- /O.CON.KMTR.FW.W.0006.000000T0000Z-171010T1200Z/ Santa Cruz Mountains- 524 AM PDT Mon Oct 9 2017 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 AM PDT TUESDAY FOR STRONG OFFSHORE WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 512... * WIND...North to Northeast winds 10 to 20 mph this morning with frequent gusts 25-35 mph expected above 2000 feet. Winds becoming south 5 to 15 mph in the afternoon with local gusts to 25 mph. * HUMIDITY...10 to 20 percent afternoons. Recovering 20-30 percent overnight. * HIGHEST THREAT...is located above 2000 feet. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ CAZ510-092330- /O.CON.KMTR.FW.W.0006.000000T0000Z-171010T1200Z/ East Bay Interior Valleys- 524 AM PDT Mon Oct 9 2017 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 AM PDT TUESDAY FOR GUSTY OFFSHORE WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 510... * WIND...North to Northeast winds 10 to 20 mph this morning with frequent gusts 30 mph. Winds decreasing to 5 to 15 mph in the afternoon. * HUMIDITY...10 to 20 percent afternoons. Recovering 30-45 percent overnight. * HIGHEST THREAT...Windy locations through the Delta including far eastern portions of Contra Costa County. * 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. && $$ CAZ506-092330- /O.CON.KMTR.FW.W.0006.000000T0000Z-171010T1200Z/ North Bay Interior Valleys- 524 AM PDT Mon Oct 9 2017 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 AM PDT TUESDAY FOR GUSTY OFFSHORE WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 506... * WIND...North to Northeast winds 10 to 20 mph this morning with frequent gusts 30 mph. Winds shifting to the south and decreasing to 5 to 15 mph in the afternoon. * HUMIDITY...10 to 20 percent afternoons. Recovering 25-40 percent overnight. * HIGHEST THREAT...Windy locations through the Napa Valley and northern Sonoma County valleys. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$
554 WWUS86 KMTR 092251 RFWMTR URGENT - FIRE WEATHER MESSAGE National Weather Service San Francisco CA 351 PM PDT Mon Oct 9 2017 ...Red Flag Warning Until 5 am Tuesday morning... .Red Flag Warning remains in effect overnight for ongoing wildfires, shifting winds and low humidity that will be a direct threat to life and property. CAZ507-100700- /O.CON.KMTR.FW.W.0006.000000T0000Z-171010T1200Z/ North Bay Mountains- 351 PM PDT Mon Oct 9 2017 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 AM PDT TUESDAY FOR SHIFTING WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 507... * WIND...Southwest winds 10 to 15 mph gusts to 20 mph. * HUMIDITY...8-15 percent through sunset then recovering 50-60 percent below 1000 feet in Napa and Sonoma Valleys. Recovery only 20 to 30 percent for interior hills of Napa County including the Atlas Fire. * HIGHEST THREAT...will be across the Napa and Sonoma County hills. * IMPACTS...Shifting winds may push the fire in new directions. A Red Flag Warning means that critical fire weather conditions are either occurring now. A combination of shifting winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ CAZ511-100700- /O.CON.KMTR.FW.W.0006.000000T0000Z-171010T1200Z/ East Bay Hills and the Diablo Range- 351 PM PDT Mon Oct 9 2017 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 AM PDT TUESDAY FOR SHIFTING WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 511... * WIND...Southwest 5 to 15 mph gusts to 20 mph. * HUMIDITY...8 to 15 percent afternoons. Recovering 25-35 percent overnight. * HIGHEST THREAT...is located around Mount Diablo and the East Bay Hills between interstate 880 and 680. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. A Red Flag Warning means that critical fire weather conditions are either occurring now. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ CAZ512-100700- /O.CON.KMTR.FW.W.0006.000000T0000Z-171010T1200Z/ Santa Cruz Mountains- 351 PM PDT Mon Oct 9 2017 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 AM PDT TUESDAY FOR SHIFTING WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONE 512... * WIND...Winds becoming southwest 5 to 15 mph with local gusts to 25 mph. * HUMIDITY...10 to 20 percent through sunset. Recovering 25-35 percent overnight. * HIGHEST THREAT...is located above 2000 feet. * 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. && $$ CAZ510-100700- /O.CON.KMTR.FW.W.0006.000000T0000Z-171010T1200Z/ East Bay Interior Valleys- 351 PM PDT Mon Oct 9 2017 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 AM PDT TUESDAY FOR SHIFTING WIND AND LOW HUMIDITY FOR FIRE WEATHER ZONE 510... * WIND...Southwest winds 5 to 15 mph gusts to 20 mph. * HUMIDITY...10 to 20 percent this afternoon. Recovering 30-45 percent overnight. * HIGHEST THREAT...Windy locations through the Delta including far eastern portions of Contra Costa County. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ CAZ506-100700- /O.CON.KMTR.FW.W.0006.000000T0000Z-171010T1200Z/ North Bay Interior Valleys- 351 PM PDT Mon Oct 9 2017 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 AM PDT TUESDAY FOR SHIFTING WINDS FOR FIRE WEATHER ZONE 506... * WIND...Winds shifting to the south 10 to 15 mph with gusts 20 mph. * HUMIDITY...10 to 20 percent through sunset. Recovering 25-40 percent overnight. * HIGHEST THREAT...Windy locations through the Napa Valley and northern Sonoma County valleys. * IMPACTS...ongoing fires may shift in different directions as southerly winds develop. 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. && $$
552 WWUS86 KMTR 100347 RFWMTR URGENT - FIRE WEATHER MESSAGE National Weather Service San Francisco CA 847 PM PDT Mon Oct 9 2017 ...Red Flag Warning Until 5 am Tuesday morning for the North Bay... .Red Flag Warning remains in effect overnight for ongoing wildfires, shifting winds and low humidity that will be a direct threat to life and property. CAZ510>512-100500- /O.CAN.KMTR.FW.W.0006.000000T0000Z-171010T1200Z/ East Bay Interior Valleys-East Bay Hills and the Diablo Range- Santa Cruz Mountains- 847 PM PDT Mon Oct 9 2017 ...RED FLAG WARNING IS CANCELLED FOR FOR FIRE WEATHER ZONES 510, 511, AND 512... The National Weather Service in San Francisco has cancelled the Red Flag Warning for the East Bay and Santa Cruz Mountains. Onshore winds are gradually returning with lighter wind speeds, higher humidity and cooler temperatures. $$ CAZ507-101200- /O.CON.KMTR.FW.W.0006.000000T0000Z-171010T1200Z/ North Bay Mountains- 847 PM PDT Mon Oct 9 2017 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 AM PDT TUESDAY FOR ONGOING FIRES AND SHIFTING WINDS FOR FIRE WEATHER ZONE 507... * WIND...Southwest winds 5 to 15 mph gusts to 20 mph. * HUMIDITY...Recovering 50-60 percent below 1000 feet in Napa and Sonoma Valleys. Recovery only 20 to 30 percent for interior hills of Napa County including the Atlas Fire. * HIGHEST THREAT...will be across the Napa and Sonoma County hills. * IMPACTS...Shifting winds may push the fire in new directions. A Red Flag Warning means that critical fire weather conditions are either occurring now. A combination of shifting winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$ CAZ506-101200- /O.CON.KMTR.FW.W.0006.000000T0000Z-171010T1200Z/ North Bay Interior Valleys- 847 PM PDT Mon Oct 9 2017 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 AM PDT TUESDAY FOR ONGOING FIRES AND SHIFTING WINDS FOR FIRE WEATHER ZONE 506... * WIND...Winds shifting to the south 5 to 15 mph with gusts 20 mph. * HUMIDITY...Recovering 25-45 percent overnight. * HIGHEST THREAT...Locations with ongoing fires through the Napa Valley and northern Sonoma County valleys. * IMPACTS...ongoing fires may shift in different directions as southerly winds develop. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior. && $$
What forecasters said that day
The local office's own words before this red flag warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS San Francisco Bay Area, CA wrote its last area forecast discussion before this red flag warning went out at Oct 6, 8:31 AM PDT, 1 hour 18 minutes earlier.
Area forecast discussion, Oct 6, 8:31 AM PDT, 1 hour 18 minutes before
Area Forecast Discussion
National Weather Service San Francisco Bay Area
831 AM PDT Fri Oct 6 2017
.SYNOPSIS...General warming trend with dry weather through the
end of the week and into the weekend. Dry offshore winds will
cause breezy conditions especially over the North Bay starting
Sunday evening. Slightly cooler weather expected next week.
&&
.DISCUSSION...as of 8:30 AM PDT Friday...Clear skies and warm
temperatures can be expected across our entire region today as
offshore flow will combine with a severely squashed marine layer.
Highs will be mostly in the 70s at the coast with 80s to lower 90s
inland. For many areas today will be the warmest day of the week.
Biggest concern for the public today is the ridge of high pressure
that will build into the Great Basin on Sunday. This will set up a
strong pressure gradient between our region and spots to the east.
Highest speeds will be over the North Bay with gusts over 40 mph
likely by Sunday evening/night. Unless 12Z guidance greatly
changes a wind advisory will be issued. Fire weather concerns will
also be greatly elevated during this time.
.PREVIOUS DISCUSSION...Clear skies across the district allowing
good viewing of the Harvest Moon. There were a few wisps of
stratus moving south along the San Mateo county coast earlier, but
those have since dissipated. Some haze or ground fog is showing
up on GOES-16 fog product along the eastern edge of the Salinas
Valley. There is only the shallowest of inversions apparent on the
Fort Ord profiler, only 100 feet at most. Thus, do not anticipate
any visibility or ceiling issues at area airports this morning.
An upper level ridge building along the coast will bring warmer
temperatures to the area today and Saturday. Highs today and
Saturday are expected to range from the 70s at the coast to the
80s to mid 90s inland. Temperatures are expected to begin to cool
slightly beginning Sunday and through the rest of next week.
Meanwhile, a surface high over the northern Great Basin will ramp
up offshore flow by Sunday and Monday resulting in gusty winds
and enhanced fire weather concerns across mainly the North and
East Bay Hills late in the weekend and early next week. Winds are
expected to lessen by midweek as a weak upper level trough
settles in over California. This will also help max temps return
closer to seasonal normals by the end of the week.
&&
.AVIATION...As of 4:29 AM PDT Friday...For 12z Tafs. Minimal
changes from last aviation package. VFR conditions with generally light
onshore flow through the forecast period. The marine layer will
remain extremely shallow and any low clouds that develop will
remain confined to the coast.
High confidence.
Vicinity of KSFO...VFR with only a few high clouds through today.
Light offshore winds this morning will increase and turn westerly
by afternoon, 15-20 kt.
SFO Bridge Approach...Similar to KSFO.
Monterey Bay Terminals...VFR. Light and variable winds through
the morning, increasing out of the west/northwest this afternoon,
around 10 kt.
&&
.FIRE WEATHER...as of 2:48 AM PDT Friday...Increased northeast
winds will persist into the morning hours with strongest winds in
the hills of Napa county...but all of the North and East Bay hills
will see offshore winds with poor humidity recovery this morning.
Offshore winds will decrease by tonight and Saturday bringing
some cooling and higher humidity to the coast. Northerly winds
increase Sunday as an upper trough deepens over the Great Basin.
Strong northerly winds possible Sunday night into Monday as models
indicate 925 mb winds up to 45-50 kt. A fire weather watch is in
effect for the North and East Bay Hills for Sunday afternoon
through Monday night.
&&
.MARINE...as of 03:58 AM PDT Friday...Long period northwesterly
and southwesterly swells will continue through the weekend. The
mixed swell will result in an enhanced risk of large shore breaks
and rip currents at the beaches. Strong northerly winds are
forecast to develop later this evening as coastal troughing
interacts with high pressure over the Eastern Pacific. Strong
winds will last through the weekend, increasing to Gale or near
Gale force for the northern outer ocean waters by Sunday.
&&
.MTR WATCHES/WARNINGS/ADVISORIES...
.Tday...SCA...Pt Pinos to Pt Piedras Blancas 0-10 nm from 3 PM
&&
PUBLIC FORECAST: Bell/Sims
AVIATION: BAM
MARINE: BAM
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www.youtube.com/nwsbayareaThe office that day
Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 5, 9:03 PM PDT | Small Craft Advisory | MTR | 3 days | |
| Oct 6, 2:40 AM PDT | Small Craft Advisory | MTR | 3 days | |
| Oct 6, 12:44 PM PDT | Wind Advisory | MTR | Alameda, Contra Costa, Marin, Napa, Sonoma | 68 hr |
| Oct 6, 1:53 PM PDT | Gale Warning | MTR | 55 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.