Alert archive / California / Frost Advisories in 2019

Frost Advisory 3, NWS San Francisco Bay Area, CA

November 28, 20195 counties in California

NWS San Francisco Bay Area, CA issued this frost advisory at Nov 28, 2019, 2:51 AM PST for 5 counties in California. It took effect at Nov 28, 2019, 10:00 PM PST. It was in force for 11 hr.

The area

The counties it named.

The facts

Issued: Nov 28, 2019, 2:51 AM PST (10:51 UTC)
In effect from: Nov 28, 2019, 10:00 PM PST
Expired: Nov 29, 2019, 9:00 AM PST
In force: 11 hr
Issued by: NWS San Francisco Bay Area, CA

Counties Alameda County, CA, Contra Costa County, CA, Marin County, CA, Santa Clara County, CA, Sonoma County, CA

The radar

The Sacramento radar (KDAX), 85 km from the middle of the area, began a volume at 10:53 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 27, 10:43 PM PST, 4 hours 8 minutes earlier.

Area forecast discussion, Nov 27, 10:43 PM PST, 4 hours 8 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 28, 2:47 AM PST	Gale Watch	MTR		43 hr
Nov 28, 2:51 AM PST	Freeze Warning	MTR	Marin, Napa, Sonoma	30 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.