Freeze Watches in California
531 freeze watches since 1986. 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 watches reaches back to 2005.
Freeze Watches by county
Each county as a circle sized by its count since 1986. Tap one for its archive.
- Freeze Watches
- 531
- Busiest year
- 202247 freeze watches
- Average year
- 24over 22 years on file
Over time
By year
Before late 2005 the archive holds only tornado, severe thunderstorm, flash flood and marine warnings, and from 1997 SPC's watches, so the jump that year is the archive widening, not the weather.
By month of the year
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Siskiyou County104
- Modoc County67
- Mendocino County52
- Humboldt County37
- Santa Barbara County35
- San Bernardino County35
- Monterey County35
- Marin County30
- Napa County30
- Sonoma County30
- San Benito County29
- Los Angeles County26
- Lake County23
- Kern County22
- Riverside County21
- Alameda County21
- Contra Costa County21
- Santa Clara County21
- Kings County21
- Tulare County21
- Del Norte County20
- Trinity County20
- Fresno County19
- Madera County18
- Merced County18
- San Mateo County17
- Mariposa County17
- Santa Cruz County15
- Ventura County14
- Lassen County13
- Plumas County13
- Sierra County13
- San Luis Obispo County13
- San Diego County11
- Imperial County9
- Inyo County6
- Mono County3
- City and County of San Francisco1
The latest freeze watches
The most recent on file, newest first.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 6, 1:37 AM PDT | Freeze Watch | MFR | Modoc, Siskiyou | 8 hr |
| Apr 15, 12:06 AM PDT | Freeze Watch | REV | Lassen, Modoc, Plumas, Sierra | 25 hr |
| Apr 14, 8:42 PM PDT | Freeze Watch | MFR | Siskiyou | 23 hr |
| Apr 1, 11:03 AM PDT | Freeze Watch | MFR | Siskiyou | 9 hr |
| Feb 18, 7:22 PM PST | Freeze Watch | HNX | Fresno, Kern, Kings, Madera, Mariposa, Merced and 1 more | 25 hr |
| Jan 7, 1:35 PM PST | Freeze Watch | LOX | Los Angeles, Santa Barbara, Ventura | 23 hr |
Nearby
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.