Alert archive / California / Frost Advisories in 2025

Frost Advisory 6, NWS San Francisco Bay Area, CA

January 15, 20258 counties in California

NWS San Francisco Bay Area, CA issued this frost advisory at Jan 15, 2025, 2:56 PM PST for 8 counties in California. It took effect at Jan 16, 2025, 1:00 AM PST. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued
Jan 15, 2025, 2:56 PM PST (22:56 UTC)
In effect from
Jan 16, 2025, 1:00 AM PST
Expired
Jan 16, 2025, 9:00 AM PST
In force
8 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, Santa Clara County, CA, Sonoma County, CA

The radar

The San Francisco radar (KMUX), 49 km from the middle of the area, began a volume at 22:58 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 office that day

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

IssuedProductOfficeCountiesLasted
Jan 14, 5:29 PM PSTFrost AdvisoryMTRMonterey, San Benito16 hr

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.