Alert archive / California / Tornado Warnings
Tornado Warnings in California, 2017
7 tornado 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 tornado warnings reaches back to 1986.
Tornado Warnings by county
Each county as a circle sized by its count in 2017. Tap one for its archive.
- Tornado Warnings
- 7
- Busiest month
- March4 tornado warnings
- Busiest day
- March 21, 20174 tornado 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 23, 5:06 AM PST | Tornado Warning | LOX | Santa Barbara | 54 min |
| Mar 21, 12:48 PM PDT | Tornado Warning | STO | Stanislaus | 27 min |
| Mar 21, 1:15 PM PDT | Tornado Warning | STO | Stanislaus | 32 min |
| Mar 21, 1:18 PM PDT | Tornado Warning | HNX | Merced | 27 min |
| Mar 21, 1:39 PM PDT | Tornado Warning | HNX | Mariposa, Merced, Tuolumne | 36 min |
| Apr 13, 3:11 PM PDT | Tornado Warning | STO | Nevada, Yuba | 49 min |
| Sep 13, 4:12 PM PDT | Tornado Warning | REV | El Dorado, Placer | 33 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
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. Rebuilt daily.