Alert archive / California / Areal Flood Warnings in 2017
Areal Flood Warning 1, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this areal flood warning at Jan 3, 2017, 5:31 PM PST for 11 counties in California. It was in force for 6 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
- Jan 3, 2017, 5:31 PM PST (01:31 UTC)
- Expired
- Jan 3, 2017, 11:30 PM PST
- In force
- 6 hr
- Issued by
- NWS San Francisco Bay Area, CA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Alameda County, CA, City and County of San Francisco, CA, Contra Costa County, CA, Marin County, CA, Monterey County, CA, Napa County, CA, San Benito County, CA, San Mateo County, CA, Santa Clara County, CA, Santa Cruz County, CA, Sonoma County, CA
The radar
The San Francisco radar (KMUX), 46 km from the middle of the area, began a volume at 01:32 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.
What forecasters said that day
The local office's own words before this areal flood 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 areal flood warning went out at Jan 3, 4:48 PM PST, 43 minutes earlier.
Area forecast discussion, Jan 3, 4:48 PM PST, 43 minutes before
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</html>Hazardous weather outlook, Jan 3, 5:27 AM PST, 12 hours 4 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN FRANCISCO CA 527 AM PST TUE JAN 3 2017 CAZ006-505>513-516>518-528>530-PZZ530-040400- SAN FRANCISCO- COASTAL NORTH BAY INCLUDING POINT REYES NATIONAL SEASHORE- NORTH BAY INTERIOR VALLEYS-NORTH BAY MOUNTAINS- SAN FRANCISCO BAY SHORELINE-SAN FRANCISCO PENINSULA COAST- EAST BAY INTERIOR VALLEYS-EAST BAY HILLS AND THE DIABLO RANGE- SANTA CRUZ MOUNTAINS-SANTA CLARA VALLEY INCLUDING SAN JOSE- SOUTHERN SALINAS VALLEY/ARROYO SECO AND LAKE SAN ANTONIO- SANTA LUCIA MOUNTAINS AND LOS PADRES NATIONAL FOREST- MOUNTAINS OF SAN BENITO COUNTY AND INTERIOR MONTEREY COUNTY INCLUDING PINNACLES NATIONAL MONUMENT- NORTHERN SALINAS VALLEY/HOLLISTER VALLEY AND CARMEL VALLEY- NORTHERN MONTEREY BAY-SOUTHERN MONTEREY BAY AND BIG SUR COAST- SAN PABLO BAY, SUISUN BAY, THE WEST DELTA AND THE SAN FRANCISCO BAY NORTH OF THE BAY BRIDGE- 527 AM PST TUE JAN 3 2017 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHERN CALIFORNIA AND THE CENTRAL COAST. .DAY ONE...TODAY AND TONIGHT A STORM SYSTEM IS EXPECTED TO PRODUCE WIDESPREAD RAIN FROM LATER TODAY INTO EARLY WEDNESDAY. RAIN MAY BE HEAVY AT TIMES FROM THIS AFTERNOON THROUGH LATE TONIGHT. THE HEAVIEST RAINFALL WILL LIKELY OCCUR OVER THE SOUTHWEST FACING SLOPES FROM THE SANTA CRUZ MOUNTAINS SOUTHWARD WHERE 3 TO 5 INCHES WILL BE POSSIBLE. IN ADDITION...LOCALLY STRONG AND GUSTY SOUTH WINDS MAY OCCUR THIS AFTERNOON AND TONIGHT WITH LOCAL WIND GUSTS UP TO 40 MPH OR GREATER AT TIMES. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY LINGERING PRECIPITATION WILL LIKELY PERSIST INTO WEDNESDAY AFTERNOON BEFORE MOSTLY DRY CONDITIONS RETURN THURSDAY INTO EARLY FRIDAY. A MORE POTENT ATMOSPHERIC RIVER EVENT WILL THEN BRING THE POTENTIAL FOR SIGNIFICANT RAINFALL ACROSS MUCH OF NORTHERN AND CENTRAL CALIFORNIA THIS WEEKEND. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED.
In the hours before
Local storm report, Jan 3, 5:26 PM PST, 5 minutes before
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</html>The office that day
Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 3, 5:43 PM PST | Areal Flood Advisory | MTR | Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 5 more | 12 hr |
| Jan 4, 1:08 AM PST | Flash Flood Warning | MTR | Santa Cruz | 3 hr |
| Jan 4, 2:35 AM PST | Small Craft Advisory | MTR | 6 hr | |
| Jan 4, 3:41 AM PST | Flash Flood Warning | MTR | Sonoma | 4 hr |
| Jan 4, 3:53 AM PST | Flash Flood Warning | MTR | Santa Cruz | 3 hr |
| Jan 4, 4:40 AM PST | Flash Flood Warning | MTR | Monterey | 6 hr |
| Jan 4, 3:30 PM PST | Flash Flood Warning | MTR | Santa Clara | 2 hr |
Nearby
Areal Flood Warnings in California, 2017Every areal flood 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; radar from the NEXRAD Level II archive.