Alert archive / California / River Flood Warnings in 2023

River Flood Warning 5, NWS San Francisco Bay Area, CA

January 8, 20234 counties in California

NWS San Francisco Bay Area, CA issued this river flood warning at Jan 8, 2023, 9:49 PM PST for 4 counties in California. It took effect at Jan 9, 2023, 7:45 PM PST. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued
Jan 8, 2023, 9:49 PM PST (05:49 UTC)
In effect from
Jan 9, 2023, 7:45 PM PST
Expired
Jan 10, 2023, 3:18 AM PST
In force
8 hr
Issued by
NWS San Francisco Bay Area, CA
Area
Storm-based polygon
Flood severity
Minor

Counties Monterey County, CA, San Benito County, CA, Santa Clara County, CA, Santa Cruz County, CA

The radar

The San Francisco radar (KMUX), 54 km from the middle of the area, began a volume at 05:48 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 Pajaro River at Chittenden (AROC1). The gauge peaked at 27.66 ft at Jan 10, 2023, 9:00 PM PST.

actionminormajor15202501/0901/1001/11
Action stage
22 ft
Minor stage
24.1 ft
Major stage
27.1 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 11159000, 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 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 river flood warning went out at Jan 8, 9:45 PM PST, 4 minutes earlier.

Area forecast discussion, Jan 8, 9:45 PM PST, 4 minutes before
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The office that day

Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jan 8, 8:29 PM PSTStorm WarningMTR13 hr
Jan 8, 9:33 PM PSTRiver Flood WarningMTRSonoma30 hr
Jan 9, 1:46 AM PSTAreal Flood AdvisoryMTRMarin, Napa, Sonoma16 hr
Jan 9, 2:18 AM PSTAreal Flood AdvisoryMTRSanta Cruz4 hr
Jan 9, 5:34 AM PSTFlash Flood Warning Considerable damage threatMTRMonterey5 hr
Jan 9, 6:28 AM PSTAreal Flood WarningMTRSanta Cruz6 hr
Jan 9, 6:46 AM PSTFlash Flood Warning Considerable damage threatMTRSanta Cruz6 hr
Jan 9, 6:59 AM PSTAreal Flood AdvisoryMTRAlameda, Contra Costa, City and County of San Francisco, San Mateo, Santa Clara12 hr
Jan 9, 7:57 AM PSTAreal Flood AdvisoryMTRMonterey38 min
Jan 9, 8:14 AM PSTAreal Flood WarningMTRMonterey31 hr
Jan 9, 8:35 AM PSTAreal Flood WarningMTRMonterey8 hr
Jan 9, 8:54 AM PSTGale WarningMTR31 hr
Jan 9, 8:54 AM PSTSmall Craft AdvisoryMTR18 hr
Jan 9, 10:22 AM PSTRiver Flood WarningMTRMonterey9 days
Jan 9, 11:24 AM PSTAreal Flood WarningMTRSanta Clara11 hr
Jan 9, 11:47 AM PSTAreal Flood WarningMTRSan Benito, Santa Clara6 hr
Jan 9, 12:06 PM PSTWind AdvisoryMTRAlameda, Contra Costa, Marin, Monterey, Napa, San Benito and 5 more25 hr
Jan 9, 12:24 PM PSTAreal Flood AdvisoryMTRMonterey, San Benito, San Mateo, Santa Clara, Santa Cruz3 hr
Jan 9, 2:13 PM PSTHigh Surf WarningMTRMarin, Monterey, City and County of San Francisco, San Mateo, Santa Cruz, Sonoma29 hr

Nearby

River Flood Warnings in California, 2023Every river flood warning in 2023

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.