Alert archive / California / Frost Advisories in 2025

Frost Advisory 13, NWS San Francisco Bay Area, CA

January 22, 20257 counties in California

NWS San Francisco Bay Area, CA issued this frost advisory at Jan 22, 2025, 1:44 PM PST for 7 counties in California. It took effect at Jan 22, 2025, 11:00 PM PST. It was in force for 10 hr.

The area

The counties it named.

The facts

Issued
Jan 22, 2025, 1:44 PM PST (21:44 UTC)
In effect from
Jan 22, 2025, 11:00 PM PST
Expired
Jan 23, 2025, 9:00 AM PST
In force
10 hr
Issued by
NWS San Francisco Bay Area, CA

Counties Alameda County, CA, Contra Costa County, CA, Marin County, CA, Monterey County, CA, Napa County, CA, San Benito County, CA, Sonoma County, CA

The radar

The San Francisco radar (KMUX), 56 km from the middle of the area, began a volume at 21:45 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 frost advisory 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 frost advisory went out at Jan 22, 11:07 AM PST, 2 hours 37 minutes earlier.

Area forecast discussion, Jan 22, 11:07 AM PST, 2 hours 37 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 22, 2:24 PM PSTGale WatchMTR12 hr
Jan 22, 2:24 PM PSTSmall Craft AdvisoryMTR4 days

Nearby

Frost Advisories in California, 2025Every frost advisory in 2025

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.