Alert archive / California / Flash Flood Watches in 2021
Flash Flood Watch 3, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this flash flood watch at Oct 22, 2021, 10:48 AM PDT for 7 counties in California. It took effect at Oct 24, 2021, 5:00 AM PDT. It was in force for 23 hr.
The area
The counties it named.
The facts
- Issued
- Oct 22, 2021, 10:48 AM PDT (17:48 UTC)
- In effect from
- Oct 24, 2021, 5:00 AM PDT
- Expired
- Oct 25, 2021, 4:00 AM PDT
- In force
- 23 hr
- Issued by
- NWS San Francisco Bay Area, CA
- Flood severity
- None
Counties Marin County, CA, Monterey 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), 53 km from the middle of the area, began a volume at 17:50 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, 5.8 hours before the alert went out and 17 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
- 644 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 177 m²/s²
- 0-3 km storm-relative helicity
- 206 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
848 WGUS66 KMTR 221748 FFAMTR URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service San Francisco CA 1048 AM PDT Fri Oct 22 2021 .An atmospheric river will take aim at the North Bay with light rain developing Saturday Night. Steady rain on Sunday morning will become heavy as the frontal boundary passes through the North Bay. Heavy rain rates may lead to flash flooding, especially in and near the 2020 LNU Lightning Complex. CAZ506-507-230200- /O.NEW.KMTR.FF.A.0003.211024T1200Z-211025T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ North Bay Interior Valleys-North Bay Mountains- Including the cities of Rohnert Park, Santa Rosa, Lagunitas-Forest Knolls, Angwin, San Rafael, Woodacre, South Santa Rosa, Petaluma, Napa, and Novato 1048 AM PDT Fri Oct 22 2021 ...FLASH FLOOD WATCH FOR THE 2020 BURN AREAS IN NAPA AND SONOMA COUNTIES IN EFFECT FROM LATE SATURDAY NIGHT THROUGH SUNDAY EVENING... The National Weather Service in San Francisco has issued a * Flash Flood Watch for the 2020 Burn Areas in Napa and Sonoma Counties in a portion of northern California, including the following areas, North Bay Interior Valleys and North Bay Mountains. * From late Saturday night through Sunday evening. * National Weather Service Meteorologists are forecasting heavy rainfall over the 2020 Burn Areas in Napa and Sonoma Counties, which may lead to flash flooding and debris flows. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ RWW
9 follow-up statements
105 WGUS66 KMTR 221802 FFAMTR URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service San Francisco CA 1102 AM PDT Fri Oct 22 2021 .An atmospheric river will take aim at the North Bay with light rain developing Saturday Night. Steady rain on Sunday morning will become heavy as the frontal boundary passes through the North Bay and then reaches the Santa Cruz mountains by Sunday afternoon and evening. CAZ509-512-230215- /O.EXB.KMTR.FF.A.0003.211024T2000Z-211025T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ San Francisco Peninsula Coast-Santa Cruz Mountains- Including the cities of Scotts Valley, Day Valley, Pacifica, and Boulder Creek 1102 AM PDT Fri Oct 22 2021 ...FLASH FLOOD WATCH FOR THE CZU LIGHTNING COMPLEX BURN AREA IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING... The National Weather Service in San Francisco has expanded the * Flash Flood Watch to include a portion of northern California, including the following areas, San Francisco Peninsula Coast and Santa Cruz Mountains. * From Sunday afternoon through Sunday evening. * National Weather Service Meteorologists are forecasting heavy rainfall over the CZU Lightning Complex burn area, which may lead to flash flooding and debris flows. * In addition to potential flash flooding over the 2020 CZU Lightning Complex there will be the threat of urban and small stream flooding throughout the region. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ CAZ506-507-230215- /O.CON.KMTR.FF.A.0003.211024T1200Z-211025T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ North Bay Interior Valleys-North Bay Mountains- Including the cities of Rohnert Park, Santa Rosa, Lagunitas-Forest Knolls, Angwin, San Rafael, Woodacre, South Santa Rosa, Petaluma, Napa, and Novato 1102 AM PDT Fri Oct 22 2021 ...FLASH FLOOD WATCH FOR THE 2020 BURN AREAS IN NAPA AND SONOMA COUNTIES REMAINS IN EFFECT FROM LATE SATURDAY NIGHT THROUGH SUNDAY EVENING... The Flash Flood Watch continues for * The 2020 Burn Areas in Napa and Sonoma Counties in a portion of northern California, including the following areas, North Bay Interior Valleys and North Bay Mountains. * From late Saturday night through Sunday evening. * National Weather Service Meteorologists are forecasting heavy rainfall over the 2020 Burn Areas in Napa and Sonoma Counties, which may lead to flash flooding and debris flows. * In addition to potential flash flooding over the 2020 burn areas there will be the threat of urban and small stream flooding throughout the North Bay. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ RWW
216 WGUS66 KMTR 221822 FFAMTR URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service San Francisco CA 1122 AM PDT Fri Oct 22 2021 .An atmospheric river will take aim at the North Bay with light rain developing Saturday Night. Steady rain on Sunday morning will become heavy as the frontal boundary passes through the North Bay and then reaches the Santa Cruz mountains by Sunday afternoon and evening. The heavy rain band will then shift into the coastal hills of Monterey county Sunday night. Lingering showers on Monday. CAZ517-230230- /O.EXB.KMTR.FF.A.0003.211025T0000Z-211025T1100Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Santa Lucia Mountains and Los Padres National Forest- 1122 AM PDT Fri Oct 22 2021 ...FLASH FLOOD WATCH FOR THE 2020 DOLAN, RIVER AND CARMEL FIRE BURN AREAS AS WELL AS THE 2021 WILLOW FIRE IN EFFECT FROM SUNDAY AFTERNOON THROUGH LATE SUNDAY NIGHT... The National Weather Service in San Francisco has expanded the * Flash Flood Watch to include a portion of northern California, including the following area, Santa Lucia Mountains and Los Padres National Forest. * From Sunday afternoon through late Sunday night. * National Weather Service Meteorologists are forecasting heavy rainfall over the 2020 burn areas as well as the 2021 Willow Fire, which may lead to flash flooding and debris flows. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. Local emergency services are monitoring the situation. PLAN NOW so you will know what to do in an emergency. Keep informed by listening to local radio and television for statements and possible warnings. Follow the advice of public safety officials. && $$ CAZ506-507-230230- /O.CON.KMTR.FF.A.0003.211024T1200Z-211025T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ North Bay Interior Valleys-North Bay Mountains- Including the cities of Rohnert Park, Santa Rosa, Lagunitas-Forest Knolls, Angwin, San Rafael, Woodacre, South Santa Rosa, Petaluma, Napa, and Novato 1122 AM PDT Fri Oct 22 2021 ...FLASH FLOOD WATCH FOR THE 2020 BURN AREAS IN NAPA AND SONOMA COUNTIES REMAINS IN EFFECT FROM LATE SATURDAY NIGHT THROUGH SUNDAY EVENING... The Flash Flood Watch continues for * The 2020 Burn Areas in Napa and Sonoma Counties in a portion of northern California, including the following areas, North Bay Interior Valleys and North Bay Mountains. * From late Saturday night through Sunday evening. * National Weather Service Meteorologists are forecasting heavy rainfall over the 2020 Burn Areas in Napa and Sonoma Counties, which may lead to flash flooding and debris flows. * In addition to potential flash flooding over the 2020 burn areas there will be the threat of urban and small stream flooding throughout the North Bay. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. Local emergency services are monitoring the situation. PLAN NOW so you will know what to do in an emergency. Keep informed by listening to local radio and television for statements and possible warnings. Follow the advice of public safety officials. && $$ CAZ509-512-230230- /O.CON.KMTR.FF.A.0003.211024T2000Z-211025T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ San Francisco Peninsula Coast-Santa Cruz Mountains- Including the cities of Scotts Valley, Day Valley, Pacifica, and Boulder Creek 1122 AM PDT Fri Oct 22 2021 ...FLASH FLOOD WATCH FOR THE CZU LIGHTNING COMPLEX BURN AREA REMAINS IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING... The Flash Flood Watch continues for * The CZU Lightning Complex burn area in a portion of northern California, including the following areas, San Francisco Peninsula Coast and Santa Cruz Mountains. * From Sunday afternoon through Sunday evening. * National Weather Service Meteorologists are forecasting heavy rainfall over the CZU Lightning Complex burn area, which may lead to flash flooding and debris flows. * In addition to potential flash flooding over the 2020 CZU Lightning Complex there will be the threat of urban and small stream flooding throughout the region. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. Local emergency services are monitoring the situation. PLAN NOW so you will know what to do in an emergency. Keep informed by listening to local radio and television for statements and possible warnings. Follow the advice of public safety officials. && $$ RWW
378 WGUS66 KMTR 230213 FFAMTR Flood Watch National Weather Service San Francisco CA 713 PM PDT Fri Oct 22 2021 .An atmospheric river will take aim at the North Bay with light rain developing Saturday Night. Steady rain on Sunday morning will become heavy as the frontal boundary passes through the North Bay and then reaches the Santa Cruz mountains by Sunday afternoon and evening. The heavy rain band will then shift into the coastal hills of Monterey county Sunday night. Lingering showers on Monday. CAZ506-507-231200- /O.CON.KMTR.FF.A.0003.211024T1200Z-211025T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ North Bay Interior Valleys-North Bay Mountains- Including the cities of Rohnert Park, Santa Rosa, Lagunitas-Forest Knolls, Angwin, San Rafael, Woodacre, South Santa Rosa, Petaluma, Napa, and Novato 713 PM PDT Fri Oct 22 2021 ...FLASH FLOOD WATCH FOR THE 2020 BURN AREAS IN NAPA AND SONOMA COUNTIES REMAINS IN EFFECT FROM LATE SATURDAY NIGHT THROUGH SUNDAY EVENING... The Flash Flood Watch continues for * The 2020 Burn Areas in Napa and Sonoma Counties in a portion of northern California, including the following areas, North Bay Interior Valleys and North Bay Mountains. * From late Saturday night through Sunday evening. * National Weather Service Meteorologists are forecasting heavy rainfall over the 2020 Burn Areas in Napa and Sonoma Counties, which may lead to flash flooding and debris flows. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. Local emergency services are monitoring the situation. PLAN NOW so you will know what to do in an emergency. Keep informed by listening to local radio and television for statements and possible warnings. Follow the advice of public safety officials. && $$ CAZ509-512-231200- /O.CON.KMTR.FF.A.0003.211024T2000Z-211025T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ San Francisco Peninsula Coast-Santa Cruz Mountains- Including the cities of Scotts Valley, Day Valley, Pacifica, and Boulder Creek 713 PM PDT Fri Oct 22 2021 ...FLASH FLOOD WATCH FOR THE CZU LIGHTNING COMPLEX BURN AREA REMAINS IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING... The Flash Flood Watch continues for * The CZU Lightning Complex burn area in a portion of northern California, including the following areas, San Francisco Peninsula Coast and Santa Cruz Mountains. * From Sunday afternoon through Sunday evening. * National Weather Service Meteorologists are forecasting heavy rainfall over the CZU Lightning Complex burn area, which may lead to flash flooding and debris flows. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor updated forecasts and be prepared to take action should Flash Flood Warnings be issued. Local emergency services are monitoring the situation and will issue a public statement as conditions warrant. PLAN NOW so you will know what to do in an emergency. Keep informed by listening to local radio and television for statements and possible warnings. Follow the advice of public safety officials. && $$ CAZ517-231200- /O.CON.KMTR.FF.A.0003.211025T0000Z-211025T1100Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Santa Lucia Mountains and Los Padres National Forest- 713 PM PDT Fri Oct 22 2021 ...FLASH FLOOD WATCH FOR THE 2020 DOLAN, RIVER AND CARMEL BURN AREAS AS WELL AS THE 2021 WILLOW FIRE REMAINS IN EFFECT FROM SUNDAY AFTERNOON THROUGH LATE SUNDAY NIGHT... The Flash Flood Watch continues for * The 2020 Dolan, River and Carmel burn areas as well as the 2021 Willow Fire in a portion of northern California, including the following area, Santa Lucia Mountains and Los Padres National Forest. * From Sunday afternoon through late Sunday night. * National Weather Service Meteorologists are forecasting heavy rainfall over the Dolan, River, and Carmel burn areas, which may lead to flash flooding and debris flows. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor updated forecasts and be prepared to take action should Flash Flood Warnings be issued. Local emergency services are monitoring the situation and will issue a public statement as conditions warrant. PLAN NOW so you will know what to do in an emergency. Keep informed by listening to local radio and television for statements and possible warnings. Follow the advice of public safety officials. && $$ BB
771 WGUS66 KMTR 231137 FFAMTR Flood Watch National Weather Service San Francisco CA 437 AM PDT Sat Oct 23 2021 .An atmospheric river will take aim at the North Bay with light rain developing this afternoon into tonight. Steady rain on Sunday morning will become heavy as the frontal boundary passes through the North Bay and then reaches the Santa Cruz mountains by Sunday afternoon and evening. The heavy rain band will then shift into the coastal hills of Monterey county Sunday night. Lingering showers on Monday. CAZ506-507-232230- /O.CON.KMTR.FF.A.0003.211024T1200Z-211025T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ North Bay Interior Valleys-North Bay Mountains- Including the cities of Rohnert Park, Santa Rosa, Lagunitas-Forest Knolls, Angwin, San Rafael, Woodacre, South Santa Rosa, Petaluma, Napa, and Novato 437 AM PDT Sat Oct 23 2021 ...FLASH FLOOD WATCH FOR THE 2020 BURN AREAS IN NAPA AND SONOMA COUNTIES REMAINS IN EFFECT FROM LATE TONIGHT THROUGH SUNDAY EVENING... The Flash Flood Watch continues for * The 2020 Burn Areas in Napa and Sonoma Counties in a portion of northern California, including the following areas, North Bay Interior Valleys and North Bay Mountains. * From late tonight through Sunday evening. * National Weather Service Meteorologists are forecasting heavy rainfall over the 2020 Burn Areas in Napa and Sonoma Counties, which may lead to flash flooding and debris flows. * In addition to potential flash flooding over the 2020 burn areas there will be the threat of urban and small stream flooding throughout the North Bay. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. Local emergency services are monitoring the situation. PLAN NOW so you will know what to do in an emergency. Keep informed by listening to local radio and television for statements and possible warnings. Follow the advice of public safety officials. && $$ CAZ509-512-232230- /O.CON.KMTR.FF.A.0003.211024T2000Z-211025T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ San Francisco Peninsula Coast-Santa Cruz Mountains- Including the cities of Scotts Valley, Day Valley, Pacifica, and Boulder Creek 437 AM PDT Sat Oct 23 2021 ...FLASH FLOOD WATCH FOR THE CZU LIGHTNING COMPLEX BURN AREA REMAINS IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING... The Flash Flood Watch continues for * The CZU Lightning Complex burn area in a portion of northern California, including the following areas, San Francisco Peninsula Coast and Santa Cruz Mountains. * From Sunday afternoon through Sunday evening. * National Weather Service Meteorologists are forecasting heavy rainfall over the CZU Lightning Complex burn area, which may lead to flash flooding and debris flows. * In addition to potential flash flooding over the 2020 CZU Lightning Complex there will be the threat of urban and small stream flooding throughout the region. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor updated forecasts and be prepared to take action should Flash Flood Warnings be issued. Local emergency services are monitoring the situation. PLAN NOW so you will know what to do in an emergency. Keep informed by listening to local radio and television for statements and possible warnings. Follow the advice of public safety officials. && $$ CAZ517-232230- /O.CON.KMTR.FF.A.0003.211025T0000Z-211025T1100Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Santa Lucia Mountains and Los Padres National Forest- 437 AM PDT Sat Oct 23 2021 ...FLASH FLOOD WATCH FOR THE 2020 DOLAN, RIVER AND CARMEL BURN AREAS AS WELL AS THE 2021 WILLOW FIRE REMAINS IN EFFECT FROM SUNDAY AFTERNOON THROUGH LATE SUNDAY NIGHT... The Flash Flood Watch continues for * The 2020 Dolan, River and Carmel burn areas as well as the 2021 Willow Fire in a portion of northern California, including the following area, Santa Lucia Mountains and Los Padres National Forest. * From Sunday afternoon through late Sunday night. * National Weather Service Meteorologists are forecasting heavy rainfall over the Dolan burn area, which may lead to flash flooding and debris flows. * Potential flash flooding and debris flows in and near burn areas as well as urban and small stream flooding. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. Local emergency services are monitoring the situation. PLAN NOW so you will know what to do in an emergency. Keep informed by listening to local radio and television for statements and possible warnings. Follow the advice of public safety officials. && $$ RWW
729 WGUS66 KMTR 232223 FFAMTR Flood Watch National Weather Service San Francisco CA 323 PM PDT Sat Oct 23 2021 .An atmospheric river will take aim at the North Bay with light rain developing this afternoon into tonight. Steady rain on Sunday morning will become heavy as the frontal boundary passes through the North Bay and then reaches the Santa Cruz mountains by Sunday afternoon and evening. The heavy rain band will then shift into the coastal hills of Monterey county Sunday night. Lingering showers on Monday. CAZ506-507-240700- /O.CON.KMTR.FF.A.0003.211024T1200Z-211025T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ North Bay Interior Valleys-North Bay Mountains- Including the cities of Rohnert Park, Santa Rosa, Lagunitas-Forest Knolls, Angwin, San Rafael, Woodacre, South Santa Rosa, Petaluma, Napa, and Novato 323 PM PDT Sat Oct 23 2021 ...FLASH FLOOD WATCH FOR THE 2020 BURN AREAS IN NAPA AND SONOMA COUNTIES REMAINS IN EFFECT FROM LATE TONIGHT THROUGH SUNDAY EVENING... The Flash Flood Watch continues for * The 2020 Burn Areas in Napa and Sonoma Counties in a portion of northern California, including the following areas, North Bay Interior Valleys and North Bay Mountains. * From late tonight through Sunday evening. * National Weather Service Meteorologists are forecasting heavy rainfall over the 2020 Burn Areas in Napa and Sonoma Counties, which may lead to flash flooding and debris flows. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. Local emergency services are monitoring the situation. PLAN NOW so you will know what to do in an emergency. Keep informed by listening to local radio and television for statements and possible warnings. Follow the advice of public safety officials. && $$ CAZ509-512-240700- /O.CON.KMTR.FF.A.0003.211024T2000Z-211025T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ San Francisco Peninsula Coast-Santa Cruz Mountains- Including the cities of Scotts Valley, Day Valley, Pacifica, and Boulder Creek 323 PM PDT Sat Oct 23 2021 ...FLASH FLOOD WATCH FOR THE CZU LIGHTNING COMPLEX BURN AREA REMAINS IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING... The Flash Flood Watch continues for * The CZU Lightning Complex burn area in a portion of northern California, including the following areas, San Francisco Peninsula Coast and Santa Cruz Mountains. * From Sunday afternoon through Sunday evening. * National Weather Service Meteorologists are forecasting heavy rainfall over the CZU Lightning Complex burn area, which may lead to flash flooding and debris flows. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor updated forecasts and be prepared to take action should Flash Flood Warnings be issued. Local emergency services are monitoring the situation. PLAN NOW so you will know what to do in an emergency. Keep informed by listening to local radio and television for statements and possible warnings. Follow the advice of public safety officials. && $$ CAZ517-240700- /O.CON.KMTR.FF.A.0003.211025T0000Z-211025T1100Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Santa Lucia Mountains and Los Padres National Forest- 323 PM PDT Sat Oct 23 2021 ...FLASH FLOOD WATCH FOR THE 2020 DOLAN, RIVER AND CARMEL BURN AREAS AS WELL AS THE 2021 WILLOW FIRE REMAINS IN EFFECT FROM SUNDAY AFTERNOON THROUGH LATE SUNDAY NIGHT... The Flash Flood Watch continues for * The 2020 Dolan, River and Carmel burn areas as well as the 2021 Willow Fire in a portion of northern California, including the following area, Santa Lucia Mountains and Los Padres National Forest. * From Sunday afternoon through late Sunday night. * National Weather Service Meteorologists are forecasting heavy rainfall over the Dolan burn area, which may lead to flash flooding and debris flows. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. Local emergency services are monitoring the situation and will issue a public statement as conditions warrant. PLAN NOW so you will know what to do in an emergency. Keep informed by listening to local radio and television for statements and possible warnings. Follow the advice of public safety officials. && $$ BB
724 WGUS66 KMTR 240657 FFAMTR Flood Watch National Weather Service San Francisco CA 1157 PM PDT Sat Oct 23 2021 .Steady rain Sunday morning will become heavy as the frontal boundary passes through the North Bay and then reaches the Santa Cruz mountains by Sunday afternoon and evening. The heavy rain band will then shift into the coastal hills of Monterey county Sunday night. Lingering showers on Monday. CAZ506-507-241300- /O.CON.KMTR.FF.A.0003.211024T1200Z-211025T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ North Bay Interior Valleys-North Bay Mountains- Including the cities of Rohnert Park, Santa Rosa, Lagunitas-Forest Knolls, Angwin, San Rafael, Woodacre, South Santa Rosa, Petaluma, Napa, and Novato 1157 PM PDT Sat Oct 23 2021 ...FLASH FLOOD WATCH FOR THE 2020 BURN AREAS IN NAPA AND SONOMA COUNTIES REMAINS IN EFFECT FROM 5 AM PDT SUNDAY THROUGH SUNDAY EVENING... The Flash Flood Watch continues for * The 2020 Burn Areas in Napa and Sonoma Counties in a portion of northern California, including the following areas, North Bay Interior Valleys and North Bay Mountains. * From 5 AM PDT Sunday through Sunday evening. * National Weather Service Meteorologists are forecasting heavy rainfall over the 2020 Burn Areas in Napa and Sonoma Counties, which may lead to flash flooding and debris flows. * In addition to potential flash flooding over the 2020 burn areas there will be the threat of urban and small stream flooding throughout the North Bay. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. Local emergency services are monitoring the situation. PLAN NOW so you will know what to do in an emergency. Keep informed by listening to local radio and television for statements and possible warnings. Follow the advice of public safety officials. && $$ CAZ509-512-241300- /O.CON.KMTR.FF.A.0003.211024T2000Z-211025T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ San Francisco Peninsula Coast-Santa Cruz Mountains- Including the cities of Scotts Valley, Day Valley, Pacifica, and Boulder Creek 1157 PM PDT Sat Oct 23 2021 ...FLASH FLOOD WATCH FOR THE CZU LIGHTNING COMPLEX BURN AREA REMAINS IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING... The Flash Flood Watch continues for * The CZU Lightning Complex burn area in a portion of northern California, including the following areas, San Francisco Peninsula Coast and Santa Cruz Mountains. * From Sunday afternoon through Sunday evening. * National Weather Service Meteorologists are forecasting heavy rainfall over the CZU Lightning Complex burn area, which may lead to flash flooding and debris flows. * In addition to potential flash flooding over the 2020 CZU Lightning Complex there will be the threat of urban and small stream flooding throughout the region. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor updated forecasts and be prepared to take action should Flash Flood Warnings be issued. Local emergency services are monitoring the situation. PLAN NOW so you will know what to do in an emergency. Keep informed by listening to local radio and television for statements and possible warnings. Follow the advice of public safety officials. && $$ CAZ517-241300- /O.CON.KMTR.FF.A.0003.211025T0000Z-211025T1100Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Santa Lucia Mountains and Los Padres National Forest- 1157 PM PDT Sat Oct 23 2021 ...FLASH FLOOD WATCH FOR THE 2020 DOLAN, RIVER AND CARMEL BURN AREAS AS WELL AS THE 2021 WILLOW FIRE REMAINS IN EFFECT FROM SUNDAY AFTERNOON THROUGH LATE SUNDAY NIGHT... The Flash Flood Watch continues for * The 2020 Dolan, River and Carmel burn areas as well as the 2021 Willow Fire in a portion of northern California, including the following area, Santa Lucia Mountains and Los Padres National Forest. * From Sunday afternoon through late Sunday night. * National Weather Service Meteorologists are forecasting heavy rainfall over the Dolan, River, and Carmel burn areas, which may lead to flash flooding and debris flows. * Potential flash flooding and debris flows in and near burn areas as well as urban and small stream flooding. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. Local emergency services are monitoring the situation. PLAN NOW so you will know what to do in an emergency. Keep informed by listening to local radio and television for statements and possible warnings. Follow the advice of public safety officials. && $$ RWW
544 WGUS66 KMTR 241159 FFAMTR Flood Watch National Weather Service San Francisco CA 459 AM PDT Sun Oct 24 2021 .Rain this morning will become heavy as the frontal boundary passes through the North Bay and then reaches the Santa Cruz mountains by this afternoon and evening. The heavy rain band will then shift into the coastal hills of Monterey county tonight. Lingering showers on Monday. CAZ506-507-250545- /O.CON.KMTR.FF.A.0003.211024T1200Z-211025T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ North Bay Interior Valleys-North Bay Mountains- Including the cities of Rohnert Park, Santa Rosa, Lagunitas-Forest Knolls, Angwin, San Rafael, Woodacre, South Santa Rosa, Petaluma, Napa, and Novato 459 AM PDT Sun Oct 24 2021 ...FLASH FLOOD WATCH FOR THE 2020 BURN AREAS IN NAPA AND SONOMA COUNTIES REMAINS IN EFFECT THROUGH THIS EVENING... The Flash Flood Watch continues for * The 2020 Burn Areas in Napa and Sonoma Counties in a portion of northern California, including the following areas, North Bay Interior Valleys and North Bay Mountains. * Through this evening. * National Weather Service Meteorologists are forecasting heavy rainfall over the 2020 Burn Areas in Napa and Sonoma Counties, which may lead to flash flooding and debris flows. * In addition to potential flash flooding over the 2020 burn areas there will be the threat of urban and small stream flooding throughout the North Bay. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ CAZ509-512-250545- /O.CON.KMTR.FF.A.0003.211024T2000Z-211025T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ San Francisco Peninsula Coast-Santa Cruz Mountains- Including the cities of Scotts Valley, Day Valley, Pacifica, and Boulder Creek 459 AM PDT Sun Oct 24 2021 ...FLASH FLOOD WATCH FOR THE CZU LIGHTNING COMPLEX BURN AREA REMAINS IN EFFECT FROM 1 PM PDT THIS AFTERNOON THROUGH THIS EVENING... The Flash Flood Watch continues for * The CZU Lightning Complex burn area in a portion of northern California, including the following areas, San Francisco Peninsula Coast and Santa Cruz Mountains. * From 1 PM PDT this afternoon through this evening. * National Weather Service Meteorologists are forecasting heavy rainfall over the CZU Lightning Complex burn area, which may lead to flash flooding and debris flows. * In addition to potential flash flooding over the 2020 CZU Lightning Complex there will be the threat of urban and small stream flooding throughout the region. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ CAZ517-250545- /O.CON.KMTR.FF.A.0003.211025T0000Z-211025T1100Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Santa Lucia Mountains and Los Padres National Forest- 459 AM PDT Sun Oct 24 2021 ...FLASH FLOOD WATCH FOR THE 2020 DOLAN, RIVER AND CARMEL BURN AREAS AS WELL AS THE 2021 WILLOW FIRE REMAINS IN EFFECT FROM THIS AFTERNOON THROUGH LATE TONIGHT... The Flash Flood Watch continues for * The 2020 Dolan, River and Carmel burn areas as well as the 2021 Willow Fire in a portion of northern California, including the following area, Santa Lucia Mountains and Los Padres National Forest. * From this afternoon through late tonight. * National Weather Service Meteorologists are forecasting heavy rainfall over the Dolan, River, and Carmel burn areas, which may lead to flash flooding and debris flows. * Potential flash flooding and debris flows in and near burn areas as well as urban and small stream flooding. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. Local emergency services are monitoring the situation. PLAN NOW so you will know what to do in an emergency. Keep informed by listening to local radio and television for statements and possible warnings. Follow the advice of public safety officials. && $$ RWW
263 WGUS66 KMTR 250600 FFAMTR Flood Watch National Weather Service San Francisco CA 1100 PM PDT Sun Oct 24 2021 CAZ506-507-509-512-250700- /O.EXP.KMTR.FF.A.0003.000000T0000Z-211025T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ North Bay Interior Valleys-North Bay Mountains-San Francisco Peninsula Coast-Santa Cruz Mountains- Including the cities of Scotts Valley, Rohnert Park, Santa Rosa, Boulder Creek, Day Valley, Lagunitas-Forest Knolls, Angwin, San Rafael, Woodacre, South Santa Rosa, Pacifica, Petaluma, Napa, and Novato 1100 PM PDT Sun Oct 24 2021 ...FLASH FLOOD WATCH FOR THE 2020 BURN AREAS IN NAPA AND SONOMA COUNTIES AND CZU LIGHTNING COMPLEX BURN AREA WILL EXPIRE AT 11 PM PDT THIS EVENING... The Flash Flood Watch for a portion of northern California, including the following areas, North Bay Interior Valleys, North Bay Mountains, San Francisco Peninsula Coast and Santa Cruz Mountains will expire at 11 PM PDT this evening. Flooding is no longer expected to pose a threat. Please continue to heed remaining road closures. $$ CAZ517-251100- /O.CON.KMTR.FF.A.0003.000000T0000Z-211025T1100Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Santa Lucia Mountains and Los Padres National Forest- 1100 PM PDT Sun Oct 24 2021 ...FLASH FLOOD WATCH FOR THE 2020 DOLAN, RIVER AND CARMEL BURN AREAS AS WELL AS THE 2021 WILLOW FIRE REMAINS IN EFFECT UNTIL 4 AM PDT MONDAY... The Flash Flood Watch continues for * The 2020 Dolan, River and Carmel burn areas as well as the 2021 Willow Fire in a portion of northern California, including the following area, Santa Lucia Mountains and Los Padres National Forest. * Until 4 AM PDT Monday. * National Weather Service Meteorologists are forecasting heavy rainfall over the Dolan burn area, which may lead to flash flooding and debris flows. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. Local emergency services are monitoring the situation and will issue a public statement as conditions warrant. PLAN NOW so you will know what to do in an emergency. Keep informed by listening to local radio and television for statements and possible warnings. Follow the advice of public safety officials. && $$ RWW
138 WGUS66 KMTR 251057 FFAMTR Flood Watch National Weather Service San Francisco CA 357 AM PDT Mon Oct 25 2021 CAZ517-251200- /O.EXP.KMTR.FF.A.0003.000000T0000Z-211025T1100Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Santa Lucia Mountains and Los Padres National Forest- 357 AM PDT Mon Oct 25 2021 ...FLASH FLOOD WATCH FOR THE 2020 DOLAN, RIVER AND CARMEL BURN AREAS AS WELL AS THE 2021 WILLOW FIRE WILL EXPIRE AT 4 AM PDT EARLY THIS MORNING... The Flash Flood Watch for a portion of northern California, including the following area, Santa Lucia Mountains and Los Padres National Forest will expire at 4 AM PDT early this morning. Please continue to heed remaining road closures. $$ RWW
The office that day
Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 22, 12:56 PM PDT | High Surf Advisory | MTR | Marin, Monterey, City and County of San Francisco, San Mateo, Santa Cruz, Sonoma | 10 hr |
| Oct 22, 1:38 PM PDT | Wind Advisory | MTR | Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 5 more | 57 hr |
| Oct 22, 2:18 PM PDT | High Surf Warning | MTR | Marin, Monterey, City and County of San Francisco, San Mateo, Santa Cruz, Sonoma | 4 days |
Nearby
Flash Flood Watches in California, 2021Every flash flood watch in 2021
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.