Alert archive / California / Frost Advisories

Frost Advisories in California, 2022

107 frost advisories in 2022. 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 2022. Tap one for its archive.

Frost Advisories: 107
Busiest month: November25 frost advisories
Busiest day: November 9, 20225 frost advisories

Over time

By month

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
Jan 1, 3:20 AM PST	Frost Advisory	SGX	Riverside, San Bernardino, San Diego	29 hr
Jan 2, 3:25 AM PST	Frost Advisory	SGX	San Diego	29 hr
Jan 2, 4:51 PM PST	Frost Advisory	LOX		15 hr
Feb 2, 1:17 PM PST	Frost Advisory	SGX	Riverside, San Bernardino, San Diego	20 hr
Feb 2, 10:15 PM PST	Frost Advisory	LOX		11 hr
Feb 22, 7:10 PM PST	Frost Advisory	MTR	Alameda, Contra Costa, Marin, Monterey, San Mateo, Santa Clara and 2 more	62 hr
Feb 23, 2:49 AM PST	Frost Advisory	SGX	Orange, San Diego	29 hr
Feb 23, 1:07 PM PST	Frost Advisory	LOX	Los Angeles	20 hr
Feb 24, 2:13 AM PST	Frost Advisory	SGX	Riverside, San Diego	30 hr
Feb 24, 2:24 PM PST	Frost Advisory	LOX		19 hr
Feb 25, 1:15 PM PST	Frost Advisory	LOX		20 hr
Mar 5, 3:18 AM PST	Frost Advisory	EKA	Del Norte, Humboldt, Mendocino	29 hr
Mar 6, 12:07 AM PST	Frost Advisory	LOX		9 hr
Mar 6, 12:05 PM PST	Frost Advisory	LOX		21 hr
Mar 6, 1:09 PM PST	Frost Advisory	SGX	Riverside, San Bernardino, San Diego	19 hr
Mar 6, 2:04 PM PST	Frost Advisory	EKA	Del Norte, Humboldt	19 hr
Mar 7, 2:09 PM PST	Frost Advisory	EKA	Lake, Mendocino	19 hr
Mar 8, 2:08 PM PST	Frost Advisory	EKA	Humboldt, Mendocino	18 hr
Mar 10, 1:59 AM PST	Frost Advisory	MTR	Marin, Monterey, Napa, San Benito, Santa Clara, Sonoma	31 hr
Mar 10, 2:05 PM PST	Frost Advisory	EKA	Humboldt	19 hr
Mar 11, 2:04 PM PST	Frost Advisory	EKA	Mendocino	19 hr
Mar 15, 2:05 PM PDT	Frost Advisory	EKA	Del Norte, Humboldt, Lake, Mendocino	20 hr
Mar 17, 3:04 AM PDT	Frost Advisory	EKA	Del Norte, Humboldt, Mendocino	30 hr
Mar 19, 2:20 PM PDT	Frost Advisory	EKA	Del Norte, Humboldt	19 hr
Mar 20, 2:23 PM PDT	Frost Advisory	EKA	Humboldt, Lake, Mendocino	19 hr
Mar 30, 2:50 AM PDT	Frost Advisory	EKA	Lake, Mendocino	29 hr
Mar 31, 2:03 PM PDT	Frost Advisory	EKA	Humboldt, Mendocino	19 hr
Apr 1, 2:04 PM PDT	Frost Advisory	EKA	Humboldt, Lake, Mendocino	19 hr
Apr 2, 2:07 PM PDT	Frost Advisory	EKA	Humboldt, Mendocino	19 hr
Apr 4, 10:23 PM PDT	Frost Advisory	EKA	Del Norte, Humboldt, Lake, Mendocino	5 hr
Apr 5, 1:01 PM PDT	Frost Advisory	EKA	Del Norte, Humboldt, Lake, Mendocino	20 hr
Apr 9, 3:00 PM PDT	Frost Advisory	EKA	Del Norte, Humboldt, Mendocino	18 hr
Apr 11, 2:56 PM PDT	Frost Advisory	EKA	Mendocino	18 hr
Apr 12, 3:18 PM PDT	Frost Advisory	EKA	Humboldt, Mendocino	19 hr
Apr 14, 11:25 AM PDT	Frost Advisory	EKA	Mendocino	22 hr
Apr 16, 2:09 PM PDT	Frost Advisory	EKA	Humboldt	19 hr
Apr 17, 2:32 PM PDT	Frost Advisory	EKA	Humboldt, Mendocino	18 hr
Apr 21, 2:07 PM PDT	Frost Advisory	EKA	Del Norte, Humboldt, Lake, Mendocino, Trinity	19 hr
Apr 22, 2:43 PM PDT	Frost Advisory	EKA	Humboldt, Lake, Mendocino	18 hr
Apr 23, 2:58 PM PDT	Frost Advisory	EKA	Humboldt, Trinity	17 hr
Apr 26, 2:19 PM PDT	Frost Advisory	EKA	Del Norte, Humboldt, Lake, Mendocino	19 hr
Apr 27, 2:28 PM PDT	Frost Advisory	EKA	Humboldt, Lake, Mendocino, Trinity	19 hr
Apr 28, 2:35 PM PDT	Frost Advisory	EKA	Humboldt, Lake, Mendocino	18 hr
Apr 30, 2:03 PM PDT	Frost Advisory	EKA	Del Norte, Humboldt, Lake, Mendocino	18 hr
May 2, 3:18 AM PDT	Frost Advisory	EKA	Del Norte, Humboldt, Lake, Mendocino	30 hr
May 7, 2:53 AM PDT	Frost Advisory	EKA	Lake, Mendocino	29 hr
May 9, 3:14 AM PDT	Frost Advisory	EKA	Del Norte, Humboldt	29 hr
May 9, 9:02 PM PDT	Frost Advisory	LOX	San Luis Obispo	12 hr
May 10, 3:07 AM PDT	Frost Advisory	EKA	Del Norte, Humboldt, Mendocino	29 hr
May 10, 1:22 PM PDT	Frost Advisory	LOX	San Luis Obispo, Santa Barbara	20 hr
May 11, 1:55 PM PDT	Frost Advisory	LOX	San Luis Obispo	19 hr
May 11, 2:19 PM PDT	Frost Advisory	EKA	Humboldt, Lake, Mendocino	18 hr
May 19, 1:22 PM PDT	Frost Advisory	EKA	Humboldt, Trinity	20 hr
May 19, 1:43 PM PDT	Frost Advisory	MFR	Siskiyou	19 hr
May 20, 1:21 PM PDT	Frost Advisory	MFR	Siskiyou	20 hr
May 21, 5:31 AM PDT	Frost Advisory	EKA	Trinity	3 hr
May 29, 6:31 AM PDT	Frost Advisory	EKA	Del Norte, Humboldt, Lake, Mendocino, Trinity	25 hr
May 30, 10:41 PM PDT	Frost Advisory	EKA	Trinity	9 hr
Sep 16, 7:33 PM PDT	Frost Advisory	MFR	Modoc, Siskiyou	12 hr
Oct 22, 2:27 AM PDT	Frost Advisory	EKA	Del Norte, Humboldt, Mendocino	31 hr
Oct 23, 4:47 AM PDT	Frost Advisory	LOX	San Luis Obispo	28 hr
Oct 23, 10:12 AM PDT	Frost Advisory	MTR	Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 4 more	23 hr
Oct 23, 2:02 PM PDT	Frost Advisory	EKA	Humboldt, Mendocino	19 hr
Oct 25, 2:03 PM PDT	Frost Advisory	EKA	Humboldt, Lake, Mendocino	19 hr
Oct 26, 2:07 PM PDT	Frost Advisory	EKA	Del Norte, Humboldt, Mendocino	20 hr
Oct 27, 1:45 PM PDT	Frost Advisory	MFR	Siskiyou	20 hr
Oct 27, 2:08 PM PDT	Frost Advisory	EKA	Humboldt, Lake, Mendocino	19 hr
Oct 28, 2:30 PM PDT	Frost Advisory	EKA	Humboldt, Lake, Mendocino	19 hr
Oct 29, 2:33 AM PDT	Frost Advisory	MFR	Siskiyou	30 hr
Oct 29, 2:39 PM PDT	Frost Advisory	EKA	Humboldt, Lake, Mendocino	18 hr
Oct 30, 1:17 PM PDT	Frost Advisory	EKA	Humboldt, Mendocino	19 hr
Nov 2, 1:21 PM PDT	Frost Advisory	STO		20 hr
Nov 2, 2:13 PM PDT	Frost Advisory	MTR	Marin, Monterey, Napa, San Benito, Sonoma	19 hr
Nov 3, 12:50 AM PDT	Frost Advisory	STO		29 hr
Nov 3, 12:58 PM PDT	Frost Advisory	SGX	San Bernardino	20 hr
Nov 3, 1:46 PM PDT	Frost Advisory	MTR	Monterey, San Benito	19 hr
Nov 3, 1:53 PM PDT	Frost Advisory	LOX	Los Angeles, Santa Barbara, Ventura	19 hr
Nov 9, 2:04 AM PST	Frost Advisory	EKA	Del Norte, Humboldt, Mendocino	31 hr
Nov 9, 2:27 AM PST	Frost Advisory	LOX	San Luis Obispo, Ventura	31 hr
Nov 9, 4:08 AM PST	Frost Advisory	MTR	Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 4 more	29 hr
Nov 9, 12:55 PM PST	Frost Advisory	SGX	San Bernardino	19 hr
Nov 9, 1:10 PM PST	Frost Advisory	STO		20 hr
Nov 10, 2:27 AM PST	Frost Advisory	MTR	Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 4 more	31 hr
Nov 10, 11:55 AM PST	Frost Advisory	STO		21 hr
Nov 11, 2:10 AM PST	Frost Advisory	EKA	Humboldt, Mendocino	7 hr
Nov 12, 9:00 PM PST	Frost Advisory	EKA	Del Norte, Humboldt, Mendocino	12 hr
Nov 13, 11:39 AM PST	Frost Advisory	STO		21 hr
Nov 13, 4:11 PM PST	Frost Advisory	MTR	Marin, Napa, Sonoma	17 hr
Nov 13, 10:45 PM PST	Frost Advisory	EKA	Del Norte, Humboldt, Mendocino	10 hr
Nov 14, 10:00 PM PST	Frost Advisory	EKA	Del Norte, Humboldt, Mendocino	11 hr
Nov 18, 3:44 AM PST	Frost Advisory	EKA	Del Norte, Humboldt, Mendocino	29 hr
Nov 19, 2:39 PM PST	Frost Advisory	EKA	Humboldt, Mendocino	18 hr
Nov 19, 7:23 PM PST	Frost Advisory	LOX	San Luis Obispo, Santa Barbara, Ventura	14 hr
Nov 20, 1:47 PM PST	Frost Advisory	LOX	Santa Barbara, Ventura	19 hr
Nov 20, 2:27 PM PST	Frost Advisory	EKA	Humboldt, Mendocino	19 hr
Nov 26, 2:38 AM PST	Frost Advisory	EKA	Del Norte, Humboldt, Mendocino	30 hr
Dec 6, 8:23 PM PST	Frost Advisory	LOX	Ventura	12 hr
Dec 12, 12:17 PM PST	Frost Advisory	LOX	Los Angeles, Santa Barbara, Ventura	20 hr
Dec 12, 1:04 PM PST	Frost Advisory	SGX	Riverside, San Bernardino, San Diego	20 hr
Dec 13, 1:12 AM PST	Frost Advisory	MTR	Alameda, Contra Costa, Marin, Monterey, San Benito, San Mateo and 3 more	32 hr
Dec 13, 1:03 PM PST	Frost Advisory	SGX	Riverside, San Bernardino, San Diego	20 hr
Dec 13, 2:05 PM PST	Frost Advisory	LOX	Los Angeles, San Luis Obispo, Santa Barbara, Ventura	18 hr
Dec 14, 12:49 AM PST	Frost Advisory	MTR	Alameda, Contra Costa, Marin, Monterey, San Benito, San Mateo and 3 more	32 hr
Dec 14, 1:03 PM PST	Frost Advisory	LOX	Los Angeles, Ventura	19 hr
Dec 14, 11:32 PM PST	Frost Advisory	MTR	Alameda, Contra Costa, Marin, Monterey, San Benito, San Mateo and 3 more	33 hr
Dec 18, 5:35 PM PST	Frost Advisory	LOX	San Luis Obispo, Santa Barbara, Ventura	15 hr
Dec 19, 2:18 PM PST	Frost Advisory	LOX	Los Angeles, Ventura	18 hr

By county

Every county with at least one alert. A county page lists each alert that covered it.

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record The radar archive 2021 2023

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.