Alert archive / California / Freeze Warnings
Freeze Warnings in California, 2017
54 freeze warnings in 2017. 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 freeze warnings reaches back to 2005.
Freeze Warnings by county
Each county as a circle sized by its count in 2017. Tap one for its archive.
- Freeze Warnings
- 54
- Busiest month
- December19 freeze warnings
- Busiest day
- December 3, 20174 freeze warnings
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 5, 9:16 AM PST | Freeze Warning | MTR | Alameda, Contra Costa, Marin, Napa, Santa Clara, Sonoma | 24 hr |
| Jan 24, 8:09 PM PST | Freeze Warning | LOX | Los Angeles | 13 hr |
| Jan 25, 2:10 PM PST | Freeze Warning | LOX | 19 hr | |
| Jan 26, 2:48 PM PST | Freeze Warning | LOX | 17 hr | |
| Jan 28, 3:02 PM PST | Freeze Warning | LOX | 18 hr | |
| Feb 23, 11:10 AM PST | Freeze Warning | HNX | 21 hr | |
| Feb 23, 9:07 PM PST | Freeze Warning | LOX | 12 hr | |
| Feb 27, 2:01 PM PST | Freeze Warning | EKA | Mendocino | 18 hr |
| Feb 28, 2:11 AM PST | Freeze Warning | EKA | Mendocino | 30 hr |
| Feb 28, 8:33 PM PST | Freeze Warning | LOX | 12 hr | |
| Mar 1, 1:44 AM PST | Freeze Warning | EKA | Mendocino | 30 hr |
| Apr 8, 2:50 PM PDT | Freeze Warning | EKA | Del Norte, Humboldt, Mendocino | 18 hr |
| May 12, 2:50 PM PDT | Freeze Warning | REV | Lassen, Plumas, Sierra | 18 hr |
| May 17, 4:19 AM PDT | Freeze Warning | EKA | Trinity | 4 hr |
| Jun 12, 2:32 AM PDT | Freeze Warning | MFR | Modoc, Siskiyou | 29 hr |
| Jun 13, 2:33 PM PDT | Freeze Warning | MFR | Modoc | 17 hr |
| Sep 14, 3:34 AM PDT | Freeze Warning | MFR | Modoc, Siskiyou | 28 hr |
| Sep 15, 9:57 AM PDT | Freeze Warning | MFR | Modoc, Siskiyou | 22 hr |
| Sep 20, 4:32 AM PDT | Freeze Warning | MFR | Modoc, Siskiyou | 28 hr |
| Sep 20, 2:32 PM PDT | Freeze Warning | MFR | Modoc, Siskiyou | 42 hr |
| Sep 21, 2:55 AM PDT | Freeze Warning | VEF | 29 hr | |
| Sep 22, 3:20 AM PDT | Freeze Warning | MFR | Modoc, Siskiyou | 30 hr |
| Sep 22, 2:55 PM PDT | Freeze Warning | REV | Lassen, Plumas, Sierra | 18 hr |
| Oct 2, 1:56 PM PDT | Freeze Warning | MFR | Siskiyou | 19 hr |
| Oct 4, 2:21 PM PDT | Freeze Warning | MFR | Siskiyou | 19 hr |
| Oct 4, 2:46 PM PDT | Freeze Warning | EKA | Mendocino, Trinity | 18 hr |
| Oct 11, 3:35 PM PDT | Freeze Warning | EKA | Mendocino, Trinity | 18 hr |
| Oct 11, 9:17 PM PDT | Freeze Warning | MFR | Siskiyou | 12 hr |
| Oct 12, 2:54 PM PDT | Freeze Warning | EKA | Mendocino, Trinity | 19 hr |
| Oct 13, 12:55 PM PDT | Freeze Warning | EKA | Trinity | 20 hr |
| Oct 13, 6:34 PM PDT | Freeze Warning | MFR | Siskiyou | 14 hr |
| Oct 14, 3:53 PM PDT | Freeze Warning | EKA | Trinity | 17 hr |
| Nov 17, 3:06 AM PST | Freeze Warning | EKA | Del Norte, Humboldt, Mendocino | 30 hr |
| Nov 17, 1:31 PM PST | Freeze Warning | LOX | 18 hr | |
| Nov 18, 12:42 PM PST | Freeze Warning | LOX | 20 hr | |
| Dec 3, 3:38 AM PST | Freeze Warning | SGX | San Bernardino | 23 hr |
| Dec 3, 3:38 AM PST | Freeze Warning | SGX | San Bernardino | 23 hr |
| Dec 3, 1:54 PM PST | Freeze Warning | EKA | Del Norte, Humboldt | 20 hr |
| Dec 3, 2:36 PM PST | Freeze Warning | LOX | Santa Barbara | 17 hr |
| Dec 4, 3:27 AM PST | Freeze Warning | STO | 24 hr | |
| Dec 4, 3:40 AM PST | Freeze Warning | MTR | Monterey | 29 hr |
| Dec 4, 9:08 AM PST | Freeze Warning | VEF | Inyo, San Bernardino | 24 hr |
| Dec 4, 1:28 PM PST | Freeze Warning | LOX | Santa Barbara | 19 hr |
| Dec 5, 3:06 AM PST | Freeze Warning | MTR | Marin, Monterey, Napa, Sonoma | 30 hr |
| Dec 5, 1:17 PM PST | Freeze Warning | LOX | Santa Barbara | 20 hr |
| Dec 6, 5:02 PM PST | Freeze Warning | MTR | Monterey | 16 hr |
| Dec 17, 7:49 PM PST | Freeze Warning | LOX | 13 hr | |
| Dec 20, 11:17 AM PST | Freeze Warning | LOX | 22 hr | |
| Dec 20, 5:57 PM PST | Freeze Warning | MTR | Monterey | 15 hr |
| Dec 21, 2:09 AM PST | Freeze Warning | MTR | Alameda, Contra Costa, Marin, Monterey, Napa, San Benito and 4 more | 31 hr |
| Dec 21, 1:51 PM PST | Freeze Warning | LOX | 19 hr | |
| Dec 22, 12:54 PM PST | Freeze Warning | MTR | Monterey | 20 hr |
| Dec 22, 1:10 PM PST | Freeze Warning | LOX | 20 hr | |
| Dec 23, 4:57 PM PST | Freeze Warning | LOX | 10 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Siskiyou County10
- Mendocino County8
- Modoc County7
- Trinity County6
- Monterey County6
- Marin County3
- Napa County3
- Sonoma County3
- Del Norte County3
- Humboldt County3
- San Bernardino County3
- Santa Barbara County3
- Alameda County2
- Contra Costa County2
- Santa Clara County2
- Lassen County2
- Plumas County2
- Sierra County2
- Los Angeles County1
- Inyo County1
- San Benito County1
- San Mateo County1
- Santa Cruz County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20162018
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.