Winter Storm Watches in California
1,273 winter storm 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 winter storm watches reaches back to 2005.
Winter Storm Watches by county
Each county as a circle sized by its count since 1986. Tap one for its archive.
- Winter Storm Watches
- 1,273
- Busiest year
- 2010108 winter storm watches
- Average year
- 58over 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.
- Alpine County177
- Nevada County177
- El Dorado County177
- Placer County177
- Siskiyou County176
- Mono County140
- Plumas County132
- Sierra County132
- Lassen County132
- Inyo County103
- San Bernardino County95
- Riverside County71
- Modoc County61
- San Diego County47
- Fresno County44
- Madera County44
- Mariposa County44
- Tuolumne County43
- Trinity County42
- Tulare County42
- Kern County38
- Humboldt County37
- Del Norte County34
- Mendocino County28
- Lake County13
- Los Angeles County11
- Santa Barbara County9
- Ventura County7
- Orange County5
- Monterey County4
- San Benito County4
- San Mateo County4
- Santa Clara County4
- Santa Cruz County4
- Alameda County1
- Contra Costa County1
- Marin County1
- Napa County1
- Sonoma County1
- Amador County1
4 more counties
The latest winter storm watches
The most recent on file, newest first.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 19, 9:23 AM PDT | Winter Storm Watch | HNX | Fresno, Madera, Mariposa, Tulare, Tuolumne | 24 hr |
| Apr 19, 9:20 AM PDT | Winter Storm Watch | REV | Alpine, El Dorado, Mono, Nevada, Placer | 25 hr |
| Apr 19, 9:11 AM PDT | Winter Storm Watch | STO | Alpine, Amador, Butte, Calaveras, El Dorado, Lassen and 7 more | 24 hr |
| Apr 8, 2:50 PM PDT | Winter Storm Watch | HNX | Fresno, Kern, Madera, Mariposa, Tulare, Tuolumne | 20 hr |
| Apr 8, 1:27 PM PDT | Winter Storm Watch | REV | Alpine, El Dorado, Lassen, Mono, Nevada, Placer and 2 more | 43 hr |
| Apr 8, 12:19 PM PDT | Winter Storm Watch | STO | 23 hr | |
| Feb 19, 11:13 PM PST | Winter Storm Watch | EKA | 12 hr | |
| Feb 19, 1:13 PM PST | Winter Storm Watch | MFR | Siskiyou | 23 hr |
| Feb 15, 11:19 PM PST | Winter Storm Watch | VEF | 25 hr | |
| Feb 14, 12:20 PM PST | Winter Storm Watch | LOX | Los Angeles, Santa Barbara, Ventura | 45 hr |
| Feb 14, 11:47 AM PST | Winter Storm Watch | SGX | Riverside, San Bernardino | 22 hr |
| Feb 14, 11:47 AM PST | Winter Storm Watch | HNX | Kern | 47 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.