Alert archive / California / River Flood Watches in 2012
River Flood Watch 1, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this river flood watch at Nov 30, 2012, 11:03 AM PST for Sonoma County, California. It took effect at Dec 26, 2012, 2:30 PM PST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Nov 30, 2012, 11:03 AM PST (19:03 UTC)
- In effect from
- Dec 26, 2012, 2:30 PM PST
- Expired
- Dec 26, 2012, 2:29 PM PST
- In force
- Issued by
- NWS San Francisco Bay Area, CA
- Flood severity
- None
County Sonoma County, CA
The radar
The Sacramento radar (KDAX), 108 km from the middle of the area, began a volume at 19:02 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 river
Written for the forecast point Russian River at Guerneville (GUEC1).
- Action stage
- 29 ft
- Minor stage
- 32 ft
- Moderate stage
- 35 ft
- Major stage
- 40 ft
This gauge today: stage, forecast and historic crests
Stage from the USGS instantaneous record for site 11467002, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.
What forecasters said that day
The local office's own words before this river flood watch 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 river flood watch went out at Nov 30, 10:03 AM PST, 1 hour earlier.
Area forecast discussion, Nov 30, 10:03 AM PST, 1 hour before
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</html>Hazardous weather outlook, Nov 30, 7:58 AM PST, 3 hours 5 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 758 AM PST FRI NOV 30 2012 CAZ505-011300- COASTAL NORTH BAY...INCLUDING POINT REYES NATIONAL SEASHORE- 758 AM PST FRI NOV 30 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE COASTAL NORTH BAY. .DAY ONE...FRIDAY AND FRIDAY NIGHT A POWERFUL PACIFIC STORM SYSTEM WILL BRING RAINY AND WINDY WEATHER TO THE REGION TODAY. RAIN WILL BE HEAVY AT TIMES. A FLASH FLOOD WATCH IS IN EFFECT. * FLASH FLOOD WATCH...SEE SFOFFAMTR WGUS66 KMTR FOR DETAILS * IN ADDITION...LARGE OCEAN SWELL WILL IMPACT THE COAST TODAY. A HIGH SURF ADVISORY IS IN EFFECT. * HIGH SURF ADVISORY...SEE SFOCFWMTR WHUS46 KMTR FOR DETAILS * .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY WINDY AND RAINY WEATHER WILL CONTINUE THROUGH THE WEEKEND. THE FLASH FLOOD WATCH IS IN EFFECT UNTIL MONDAY MORNING. * FLASH FLOOD WATCH...SEE SFOFFAMTR WGUS66 KMTR FOR DETAILS * HIGH SURF WILL CONTINUE TO IMPACT THE COAST THROUGH EARLY SATURDAY MORNING. * HIGH SURF ADVISORY...SEE SFOCFWMTR WHUS46 KMTR FOR DETAILS * DRY WEATHER WILL RETURN ON MONDAY. MORE RAIN IS POSSIBLE BY TUESDAY. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS PER STANDARD OPERATING PROCEDURES. CAZ006-509-529-011300- SAN FRANCISCO-SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY- 758 AM PST FRI NOV 30 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SAN FRANCISCO...SAN FRANCISCO PENINSULA COAST AND THE NORTHERN MONTEREY BAY. .DAY ONE...FRIDAY AND FRIDAY NIGHT A POWERFUL PACIFIC STORM SYSTEM WILL BRING RAINY AND WINDY WEATHER TO THE REGION TODAY. RAIN COULD BE HEAVY AT TIMES. WIND GUSTS UP TO 50 MPH ARE LIKELY THROUGH LATE MORNING. A WIND ADVISORY IS IN EFFECT THROUGH 11 AM. A FLASH FLOOD WATCH IS IN EFFECT. * WIND ADVISORY....SEE SFONPWMTR WWUS76 KMTR FOR DETAILS * * FLASH FLOOD WATCH...SEE SFOFFAMTR WGUS66 KMTR FOR DETAILS * HIGH SURF WILL IMPACT THE COAST. * HIGH SURF ADVISORY...SEE SFOCFWMTR WHUS46 KMTR FOR DETAILS * .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY WINDY AND RAINY WEATHER WILL CONTINUE THROUGH THE WEEKEND. THE FLASH FLOOD WATCH IS IN EFFECT UNTIL MONDAY MORNING. * FLASH FLOOD WATCH...SEE SFOFFAMTR WGUS66 KMTR FOR DETAILS * HIGH SURF WILL IMPACT THE COAST THROUGH EARLY SATURDAY MORNING. * HIGH SURF ADVISORY...SEE SFOCFWMTR WHUS46 KMTR FOR DETAILS * DRY WEATHER WILL RETURN ON MONDAY. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS PER STANDARD OPERATING PROCEDURES. CAZ530-011300- SOUTHERN MONTEREY BAY AND BIG SUR COAST- 758 AM PST FRI NOV 30 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SAN FRANCISCO BAY AREA AND MONTEREY BAY AREA. .DAY ONE...FRIDAY AND FRIDAY NIGHT A POWERFUL PACIFIC STORM WILL IMPACT THE AREA ON TODAY. A FLASH FLOOD WATCH IS IN EFFECT. WIND GUSTS UP TO 50 MPH ARE LIKELY THROUGH LATE MORNING. A WIND ADVISORY IS IN EFFECT THROUGH 2 PM. LARGE OCEAN SWELL WILL IMPACT THE COAST. A HIGH SURF ADVISORY IS IN EFFECT. * FLASH FLOOD WATCH...SEE SFOFFAMTR WGUS66 KMTR FOR DETAILS * * WIND ADVISORY....SEE SFONPWMTR WWUS76 KMTR FOR DETAILS * * HIGH SURF ADVISORY...SEE SFOCFWMTR WHUS46 KMTR FOR DETAILS * .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY WINDY AND RAINY WEATHER WILL CONTINUE THROUGH THE WEEKEND. THERE WILL BE PERIODS OF HEAVY RAIN WHICH WILL RESULT IN RAPID RISES ON SMALL STREAMS AND CREEKS. A FLASH FLOOD WATCH IS IN EFFECT THROUGH MONDAY MORNING. * FLASH FLOOD WATCH...SEE SFOFFAMTR WGUS66 KMTR FOR DETAILS * IN ADDITION...LARGE OCEAN SWELL WILL CONTINUE TO IMPACT THE COAST THROUGH EARLY SATURDAY MORNING. A HIGH SURF ADVISORY IS IN EFFECT UNTIL 4 AM PST SATURDAY. * HIGH SURF ADVISORY...SEE SFOCFWMTR WHUS46 KMTR FOR DETAILS * .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS PER STANDARD OPERATING PROCEDURES. CAZ506-011300- NORTH BAY INTERIOR VALLEYS- 758 AM PST FRI NOV 30 2012 THIS HAZARDOUS WEATHER OUTLOOK IS NORTH BAY INTERIOR VALLEYS. .DAY ONE...FRIDAY AND FRIDAY NIGHT A POWERFUL PACIFIC STORM SYSTEM WILL BRING PERIODS OF RAIN TO THE REGION. RAIN WILL LIKELY BE HEAVY AT TIMES...ESPECIALLY AFTER MIDNIGHT. A FLASH FLOOD WATCH IS IN EFFECT. * FLASH FLOOD WATCH...SEE SFOFFAMTR WGUS66 KMTR FOR DETAILS * .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY PERIODS OF RAIN WILL CONTINUE THROUGH THE WEEKEND. RAIN WILL BE HEAVY AT TIMES...ESPECIALLY ON FRIDAY MORNING AND THEN AGAIN ON SATURDAY NIGHT AND SUNDAY MORNING. THE FLASH FLOOD WATCH IS IN EFFECT THROUGH MONDAY MORNING. * FLASH FLOOD WATCH...SEE SFOFFAMTR WGUS66 KMTR FOR DETAILS * .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS PER STANDARD OPERATING PROCEDURES. CAZ508-510-513-011300- SAN FRANCISCO BAY SHORELINE-EAST BAY INTERIOR VALLEYS- SANTA CLARA VALLEY...INCLUDING SAN JOSE- 758 AM PST FRI NOV 30 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE SAN FRANCISCO BAY SHORELINE...EAST BAY INTERIOR VALLEYS...SANTA CLARA VALLEY. .DAY ONE...FRIDAY AND FRIDAY NIGHT PERIODS OF RAIN WILL OCCUR TODAY. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY PERIODS OF RAIN WILL CONTINUE THROUGH THE WEEKEND. RAIN COULD BE HEAVY AT TIMES. LOCAL URBAN FLOODING IS POSSIBLE. WINDS WILL BE STRONG AND GUSTY AT TIMES. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS PER STANDARD OPERATING PROCEDURES. CAZ516-528-011300- SOUTHERN SALINAS VALLEY...ARROYO SECO...AND LAKE SAN ANTONIO- NORTHERN SALINAS VALLEY...HOLLISTER VALLEY...AND CARMEL VALLEY- 758 AM PST FRI NOV 30 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE SALINAS VALLEY...HOLLISTER VALLEY AND CARMEL VALLEY. .DAY ONE...FRIDAY AND FRIDAY NIGHT LOCALLY HEAVY RAIN WILL OCCUR AT TIMES TODAY. LOCALLY STRONG AND GUSTY SOUTHEAST WINDS WILL OCCUR...ESPECIALLY IN THE SALINAS VALLEY. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY PERIODS OF RAIN WILL CONTINUE THROUGH THE WEEKEND. RAIN COULD BE HEAVY AT TIMES. LOCAL URBAN FLOODING IS POSSIBLE. WINDS WILL BE STRONG AND GUSTY AT TIMES. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS PER STANDARD OPERATING PROCEDURES. CAZ507-011300- NORTH BAY MOUNTAINS- 758 AM PST FRI NOV 30 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE NORTH BAY MOUNTAINS. .DAY ONE...FRIDAY AND FRIDAY NIGHT A POWERFUL PACIFIC STORM SYSTEM WILL BRING RAINY AND WINDY WEATHER TO THE REGION TODAY. RAIN WILL BE HEAVY AT TIMES. A FLASH FLOOD WATCH IS IN EFFECT. * FLASH FLOOD WATCH...SEE SFOFFAMTR WGUS66 KMTR FOR DETAILS * .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY WINDY AND RAINY WEATHER WILL CONTINUE THROUGH THE WEEKEND. THE FLASH FLOOD WATCH IS IN EFFECT UNTIL MONDAY MORNING. * FLASH FLOOD WATCH...SEE SFOFFAMTR WGUS66 KMTR FOR DETAILS * DRY WEATHER WILL RETURN ON MONDAY. MORE RAIN IS POSSIBLE TUESDAY. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS PER STANDARD OPERATING PROCEDURES. CAZ512-011300- SANTA CRUZ MOUNTAINS- 758 AM PST FRI NOV 30 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE SANTA CRUZ MOUNTAINS. .DAY ONE...FRIDAY AND FRIDAY NIGHT A POWERFUL PACIFIC STORM SYSTEM WILL BRING RAINY AND WINDY WEATHER TO THE REGION TODAY. RAIN COULD BE HEAVY AT TIMES. WIND GUSTS UP TO 50 MPH ARE LIKELY THROUGH LATE MORNING. A WIND ADVISORY IS IN EFFECT THROUGH 11 AM. A FLASH FLOOD WATCH IS IN EFFECT. * WIND ADVISORY....SEE SFONPWMTR WWUS76 KMTR FOR DETAILS * * FLASH FLOOD WATCH...SEE SFOFFAMTR WGUS66 KMTR FOR DETAILS * .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY WINDY AND RAINY WEATHER WILL CONTINUE THROUGH THE WEEKEND. THE FLASH FLOOD WATCH IS IN EFFECT UNTIL MONDAY MORNING. PERIODS OF HEAVY RAIN ARE LIKELY. * FLASH FLOOD WATCH...SEE SFOFFAMTR WGUS66 KMTR FOR DETAILS * DRY WEATHER IS FORECAST TO DEVELOP ON MONDAY. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS PER STANDARD OPERATING PROCEDURES. CAZ511-011300- EAST BAY HILLS AND DIABLO RANGE- 758 AM PST FRI NOV 30 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE EAST BAY HILLS. .DAY ONE...FRIDAY AND FRIDAY NIGHT A POWERFUL PACIFIC STORM SYSTEM WILL BRING RAINY AND WINDY WEATHER TO THE REGION ON THURSDAY NIGHT. WIND GUSTS UP TO 50 MPH ARE LIKELY. A WIND ADVISORY IS IN EFFECT UNTIL 11 AM. * WIND ADVISORY....SEE SFONPWMTR WWUS76 KMTR FOR DETAILS * .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY WINDY AND RAINY WEATHER WILL CONTINUE THROUGH THE WEEKEND. PERIODS OF HEAVY RAIN ARE POSSIBLE. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS PER STANDARD OPERATING PROCEDURES. CAZ517-011300- SANTA LUCIA MOUNTAINS AND LOS PADRES NATIONAL FOREST- 758 AM PST FRI NOV 30 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE SANTA LUCIA MOUNTAINS AND LOS PADRES NATIONAL FOREST. .DAY ONE...FRIDAY AND FRIDAY NIGHT A POWERFUL PACIFIC STORM WILL IMPACT THE AREA TODAY. A FLASH FLOOD WATCH IS IN EFFECT. STRONG SOUTHERLY WINDS WITH GUSTS UP TO 50 MPH ARE EXPECTED THROUGH 2 PM. * FLASH FLOOD WATCH...SEE SFOFFAMTR WGUS66 KMTR FOR DETAILS * * WIND ADVISORY....SEE SFONPWMTR WWUS76 KMTR FOR DETAILS * .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY WINDY AND RAINY WEATHER WILL CONTINUE THROUGH THE WEEKEND. THERE WILL BE PERIODS OF HEAVY RAIN WHICH WILL RESULT IN RAPID RISES ON SMALL STREAMS AND CREEKS. A FLASH FLOOD WATCH IS IN EFFECT THROUGH MONDAY MORNING. * FLASH FLOOD WATCH...SEE SFOFFAMTR WGUS66 KMTR FOR DETAILS * .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS PER STANDARD OPERATING PROCEDURES. CAZ518-011300- MOUNTAINS OF SAN BENITO AND INTERIOR MONTEREY COUNTY INCLUDING PINNACLES NATIONAL MONUMENT- 758 AM PST FRI NOV 30 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE MOUNTAINS OF SAN BENITO AND INTERIOR MONTEREY COUNTY. .DAY ONE...FRIDAY AND FRIDAY NIGHT HEAVY RAIN IS EXPECTED TODAY. LOCALLY STRONG AND GUSTY SOUTHEAST WINDS WILL OCCUR. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY PERIODS OF RAIN WILL CONTINUE THROUGH THE WEEKEND. RAIN COULD BE HEAVY AT TIMES. WINDS WILL BE STRONG AND GUSTY AT TIMES. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS PER STANDARD OPERATING PROCEDURES.
In the hours before
Local storm report, Nov 30, 9:32 AM PST, 1 hour 31 minutes before
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</html>Local storm report, Nov 30, 9:33 AM PST, 1 hour 30 minutes before
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</html>Local storm report, Nov 30, 9:47 AM PST, 1 hour 16 minutes before
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</html>Local storm report, Nov 30, 9:53 AM PST, 1 hour 10 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
953 AM PST FRI NOV 30 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0953 AM HEAVY RAIN 5 ESE ST. HELENA 38.48N 122.38W
11/30/2012 M9.17 INCH NAPA CA MESONET
MEASURED AT CONN DAM
&&
LJOHNSONLocal storm report, Nov 30, 10:28 AM PST, 35 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
1028 AM PST FRI NOV 30 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0923 AM NON-TSTM WND DMG BEN LOMOND 37.10N 122.08W
11/30/2012 SANTA CRUZ CA UTILITY COMPANY
POWER OUTAGES IN BEN LOMOND AREA IMPACTING OVER 1000
CUSTOMERS
&&
LJOHNSONLocal storm report, Nov 30, 10:39 AM PST, 24 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
1039 AM PST FRI NOV 30 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1025 AM FLASH FLOOD 6 NW PICO BLANCO CAMPGR 36.40N 121.87W
11/30/2012 MONTEREY CA TRAINED SPOTTER
COCORAHS SPOTTER REOPRTS 3.50 INCHES OF RAIN SINCE 7 AM
THIS MORNING AND A STORM TOTAL OF 4.88 INCHES. DRAINAGE
CULVERTS OVERWHELMED AND BACKING UP WITH SERIOUS EROSION
BEING REPORTED.
&&
LJOHNSONThe office that day
Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 30, 4:16 AM PST | Flash Flood Warning | MTR | Sonoma | 119 min |
| Nov 30, 5:38 AM PST | Areal Flood Advisory | MTR | Santa Cruz | 6 hr |
| Nov 30, 6:22 AM PST | Flash Flood Warning | MTR | Sonoma | 3 hr |
| Nov 30, 8:27 AM PST | Areal Flood Advisory | MTR | Alameda, Contra Costa, Marin, Monterey, San Benito, City and County of San Francisco and 3 more | 3 hr |
| Nov 30, 9:02 AM PST | Areal Flood Advisory | MTR | Marin, Napa, Sonoma | 118 min |
| Nov 30, 9:29 AM PST | Flash Flood Warning | MTR | Monterey | 61 min |
| Nov 30, 10:38 AM PST | Flash Flood Warning | MTR | Monterey | 82 min |
| Nov 30, 11:25 AM PST | Areal Flood Advisory | MTR | Alameda, Contra Costa, Marin, Monterey, San Benito, City and County of San Francisco and 3 more | 3 hr |
| Nov 30, 11:59 AM PST | Flash Flood Warning | MTR | Monterey | 3 hr |
| Nov 30, 2:56 PM PST | Small Craft Advisory | MTR | 47 hr |
Nearby
River Flood Watches in California, 2012Every river flood watch in 2012
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.