Alert archive / California / Frost Advisories in 2023
Frost Advisory 8, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this frost advisory at Feb 21, 2023, 1:17 PM PST for Marin County, Napa County, Sonoma County, California. It took effect at Feb 22, 2023, 12:00 AM PST. It was in force for 9 hr.
The area
The counties it named.
The facts
- Issued
- Feb 21, 2023, 1:17 PM PST (21:17 UTC)
- In effect from
- Feb 22, 2023, 12:00 AM PST
- Expired
- Feb 22, 2023, 9:00 AM PST
- In force
- 9 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 21:20 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 Feb 21, 10:33 AM PST, 2 hours 44 minutes earlier.
Area forecast discussion, Feb 21, 10:33 AM PST, 2 hours 44 minutes before
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</html>The office that day
Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 20, 9:58 PM PST | Beach Hazards Statement | MTR | Santa Cruz | 42 hr |
| Feb 20, 9:58 PM PST | High Surf Advisory | MTR | Marin, Monterey, City and County of San Francisco, San Mateo, Santa Cruz, Sonoma | 42 hr |
| Feb 21, 2:42 AM PST | Frost Advisory | MTR | Alameda, Contra Costa, Marin, Monterey, San Benito, City and County of San Francisco and 4 more | 54 hr |
| Feb 21, 2:42 AM PST | Freeze Watch | MTR | Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 4 more | 24 hr |
| Feb 21, 2:57 AM PST | Winter Storm Watch | MTR | Monterey, San Benito, San Mateo, Santa Clara, Santa Cruz | 11 hr |
| Feb 21, 3:50 AM PST | High Wind Warning | MTR | Marin, Monterey, San Benito, City and County of San Francisco, San Mateo, Santa Cruz and 1 more | 29 hr |
| Feb 21, 1:57 PM PST | Winter Weather Advisory | MTR | Monterey, San Benito, San Mateo, Santa Clara, Santa Cruz, Sonoma | 53 hr |
Nearby
Frost Advisories in California, 2023Every frost advisory in 2023
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.