Severe Thunderstorm Watches in California
21 severe thunderstorm 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 severe thunderstorm watches reaches back to 1997.
Severe Thunderstorm Watches by county
Each county as a circle sized by its count since 1986. Tap one for its archive.
- Severe Thunderstorm Watches
- 21
- Busiest year
- 19983 severe thunderstorm watches
- Average year
- 2over 13 years on file
Over time
By year
Watches are counted from 1997, when the Storm Prediction Center archive begins.
By month of the year
By county
Every county with at least one alert. A county page lists each alert that covered it.
- San Bernardino County7
- Los Angeles County5
- Imperial County5
- Orange County4
- Ventura County4
- Riverside County4
- Kern County4
- Tulare County4
- Fresno County4
- Madera County4
- San Joaquin County3
- San Luis Obispo County3
- San Diego County3
- Siskiyou County3
- Mariposa County3
- Kings County3
- Merced County3
- Santa Clara County2
- Santa Cruz County2
- Monterey County2
- Alameda County2
- San Mateo County2
- Marin County2
- Contra Costa County2
- San Benito County2
- Solano County2
- Trinity County2
- Modoc County2
- Tuolumne County2
- Stanislaus County2
- Sacramento County2
- Yolo County2
- Amador County2
- Calaveras County2
- Santa Barbara County2
- Tehama County1
- Shasta County1
- Lassen County1
- Humboldt County1
- El Dorado County1
4 more counties
The latest severe thunderstorm watches
The most recent on file, newest first.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 13, 11:14 PM PDT | Severe Thunderstorm Watch | SPC | Los Angeles, San Luis Obispo, Santa Barbara, Ventura | 12 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.