Alert archive / California / Frost Advisories in 2019

Frost Advisory 2, NWS San Francisco Bay Area, CA

November 1, 2019Marin County, Napa County, Sonoma County, California

NWS San Francisco Bay Area, CA issued this frost advisory at Nov 1, 2019, 1:12 PM PDT for Marin County, Napa County, Sonoma County, California. It took effect at Nov 2, 2019, 2:00 AM PDT. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued: Nov 1, 2019, 1:12 PM PDT (20:12 UTC)
In effect from: Nov 2, 2019, 2:00 AM PDT
Expired: Nov 2, 2019, 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 20:14 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 1, 10:46 AM PDT, 2 hours 26 minutes earlier.

Area forecast discussion, Nov 1, 10:46 AM PDT, 2 hours 26 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 1, 1:12 PM PDT	Freeze Warning	MTR	Monterey, San Benito	20 hr

Nearby

Frost Advisories in California, 2019 Every frost advisory in 2019

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.