Alert archive / California / Frost Advisories / 2021
Frost Advisories in California, November 2021
11 frost advisories in November 2021. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of frost advisories reaches back to 2005.
Frost Advisories by county
Each county as a circle sized by its count in November 2021. Tap one for its archive.
- Frost Advisories
- 11
- Busiest day
- November 23, 20213 frost advisories
Over time
By day
Days in UTC, the clock the archive keeps.
The alerts
Every alert, in the order issued. Times are local, Pacific Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 6, 3:28 AM PDT | Frost Advisory | EKA | Humboldt, Lake, Mendocino | 30 hr |
| Nov 7, 3:41 AM PST | Frost Advisory | EKA | Humboldt, Lake, Mendocino | 28 hr |
| Nov 20, 2:32 AM PST | Frost Advisory | EKA | Del Norte, Humboldt, Lake, Mendocino | 31 hr |
| Nov 21, 2:05 PM PST | Frost Advisory | EKA | Del Norte, Humboldt, Mendocino | 20 hr |
| Nov 21, 2:12 PM PST | Frost Advisory | LOX | 18 hr | |
| Nov 23, 2:30 AM PST | Frost Advisory | EKA | Del Norte, Humboldt, Mendocino | 31 hr |
| Nov 23, 1:46 PM PST | Frost Advisory | MTR | Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 1 more | 19 hr |
| Nov 23, 2:24 PM PST | Frost Advisory | LOX | 19 hr | |
| Nov 24, 2:49 PM PST | Frost Advisory | MTR | Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 1 more | 18 hr |
| Nov 25, 3:04 AM PST | Frost Advisory | EKA | Humboldt, Mendocino | 6 hr |
| Nov 25, 1:21 PM PST | Frost Advisory | EKA | Humboldt, Mendocino | 20 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20202022
Sources
National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Warning verification from the Mesonet's Cow. Rebuilt daily.