Alert archive / California / Frost Advisories in 2020

Frost Advisory 1, NWS San Francisco Bay Area, CA

March 25, 2020Marin County, Napa County, Sonoma County, California

NWS San Francisco Bay Area, CA issued this frost advisory at Mar 25, 2020, 2:43 AM PDT for Marin County, Napa County, Sonoma County, California. It took effect at Mar 26, 2020, 2:00 AM PDT. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued
Mar 25, 2020, 2:43 AM PDT (09:43 UTC)
In effect from
Mar 26, 2020, 2:00 AM PDT
Expired
Mar 26, 2020, 9:00 AM PDT
In force
7 hr
Issued by
NWS San Francisco Bay Area, CA

Counties Marin County, CA, Napa County, CA, Sonoma County, CA

The radar

The Sacramento radar (KDAX), 88 km from the middle of the area, began a volume at 09:43 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 Mar 24, 10:26 PM PDT, 4 hours 17 minutes earlier.

Area forecast discussion, Mar 24, 10:26 PM PDT, 4 hours 17 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
Mar 25, 2:36 PM PDTSpecial Weather StatementMTRSonoma39 min
Mar 25, 2:38 PM PDTSmall Craft AdvisoryMTR48 hr
Mar 25, 3:21 PM PDTSpecial Weather StatementMTRSonoma39 min
Mar 25, 3:25 PM PDTSpecial Weather StatementMTRNapa50 min

Nearby

Frost Advisories in California, 2020Every frost advisory in 2020

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.