Alert archive / California / Severe Thunderstorm Warnings / 2023
Severe Thunderstorm Warnings in California, March 2023
29 severe thunderstorm warnings in March 2023. 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 warnings reaches back to 1986.
Severe Thunderstorm Warnings by county
Each county as a circle sized by its count in March 2023. Tap one for its archive.
- Severe Thunderstorm Warnings
- 29
- Busiest day
- March 11, 20235 severe thunderstorm warnings
Over time
By day
Days in UTC, the clock the archive keeps.
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 |
|---|---|---|---|---|
| Mar 6, 3:49 PM PST | Severe Thunderstorm Warning | STO | Butte, Glenn | 41 min |
| Mar 6, 4:42 PM PST | Severe Thunderstorm Warning | STO | Butte, Glenn | 48 min |
| Mar 6, 5:21 PM PST | Severe Thunderstorm Warning | STO | Tehama | 24 min |
| Mar 6, 5:26 PM PST | Severe Thunderstorm Warning | STO | Butte, Tehama | 18 min |
| Mar 11, 12:42 PM PST | Severe Thunderstorm Warning | STO | San Joaquin, Stanislaus | 63 min |
| Mar 11, 1:32 PM PST | Severe Thunderstorm Warning | STO | Calaveras, San Joaquin, Stanislaus, Tuolumne | 10 min |
| Mar 11, 1:46 PM PST | Severe Thunderstorm Warning | STO | Calaveras, San Joaquin, Stanislaus, Tuolumne | 59 min |
| Mar 11, 3:09 PM PST | Severe Thunderstorm Warning | STO | Calaveras, Stanislaus | 51 min |
| Mar 11, 3:23 PM PST | Severe Thunderstorm Warning | STO | Calaveras, Stanislaus, Tuolumne | 67 min |
| Mar 11, 4:08 PM PST | Severe Thunderstorm Warning | HNX | Fresno | 37 min |
| Mar 12, 3:22 PM PDT | Severe Thunderstorm Warning | HNX | Fresno, Madera, Merced | 23 min |
| Mar 12, 3:44 PM PDT | Severe Thunderstorm Warning | HNX | Fresno, Madera, Merced | 31 min |
| Mar 12, 4:35 PM PDT | Severe Thunderstorm Warning | HNX | Fresno, Madera | 25 min |
| Mar 12, 4:58 PM PDT | Severe Thunderstorm Warning | HNX | Fresno, Madera | 32 min |
| Mar 12, 5:28 PM PDT | Severe Thunderstorm Warning | HNX | Fresno, Madera | 47 min |
| Mar 12, 6:56 PM PDT | Severe Thunderstorm Warning | HNX | Fresno, Kings, Tulare | 49 min |
| Mar 15, 2:54 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 36 min |
| Mar 15, 4:23 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 22 min |
| Mar 15, 4:26 PM PDT | Severe Thunderstorm Warning | PSR | Imperial | 34 min |
| Mar 15, 4:39 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 51 min |
| Mar 21, 10:26 AM PDT | Severe Thunderstorm Warning | SGX | San Diego | 49 min |
| Mar 21, 11:00 AM PDT | Severe Thunderstorm Warning | SGX | San Diego | 15 min |
| Mar 21, 12:43 PM PDT | Severe Thunderstorm Warning | MTR | Monterey | 62 min |
| Mar 21, 12:52 PM PDT | Severe Thunderstorm Warning | MTR | Santa Cruz | 38 min |
| Mar 23, 5:18 PM PDT | Severe Thunderstorm Warning | STO | Butte, Tehama | 42 min |
| Mar 23, 5:35 PM PDT | Severe Thunderstorm Warning | STO | Butte, Glenn | 55 min |
| Mar 29, 4:57 PM PDT | Severe Thunderstorm Warning | HNX | Merced | 33 min |
| Mar 30, 9:47 AM PDT | Severe Thunderstorm Warning | SGX | San Diego | 43 min |
| Mar 30, 10:33 AM PDT | Severe Thunderstorm Warning | SGX | San Diego | 27 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20222024
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.