Alert archive / California / Frost Advisories in 2022

Frost Advisory 6, NWS San Francisco Bay Area, CA

November 9, 202210 counties in California

NWS San Francisco Bay Area, CA issued this frost advisory at Nov 9, 2022, 4:08 AM PST for 10 counties in California. It took effect at Nov 10, 2022, 12:00 AM PST. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued
Nov 9, 2022, 4:08 AM PST (12:08 UTC)
In effect from
Nov 10, 2022, 12:00 AM PST
Expired
Nov 10, 2022, 9:00 AM PST
In force
9 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, San Mateo County, CA, Santa Clara County, CA, Santa Cruz County, CA, Sonoma County, CA

The radar

The San Francisco radar (KMUX), 42 km from the middle of the area, began a volume at 12:07 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 Nov 8, 2:20 PM PST, 13 hours 48 minutes earlier.

Area forecast discussion, Nov 8, 2:20 PM PST, 13 hours 48 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
Nov 8, 7:28 PM PSTSpecial Weather StatementMTRContra Costa17 min
Nov 8, 7:52 PM PSTSpecial Weather StatementMTRSanta Cruz23 min
Nov 8, 8:07 PM PSTSpecial Weather StatementMTRAlameda23 min
Nov 8, 8:29 PM PSTSpecial Weather StatementMTRAlameda31 min
Nov 9, 4:08 AM PSTFreeze WatchMTRMonterey, San Benito8 hr
Nov 9, 12:08 PM PSTHard Freeze WarningMTRMonterey, San Benito21 hr
Nov 9, 2:34 PM PSTSmall Craft AdvisoryMTR30 hr

Nearby

Frost Advisories in California, 2022Every frost advisory in 2022

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.