Alert archive / California / Severe Thunderstorm Warnings
Severe Thunderstorm Warnings in California, 1986
10 severe thunderstorm warnings in 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 warnings reaches back to 1986.
Severe Thunderstorm Warnings by county
Each county as a circle sized by its count in 1986. Tap one for its archive.
- Severe Thunderstorm Warnings
- 10
- Busiest month
- September6 severe thunderstorm warnings
- Busiest day
- September 24, 19864 severe thunderstorm 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 |
|---|---|---|---|---|
| May 30, 4:15 AM PDT | Severe Thunderstorm Warning | HNX | Kern | 60 min |
| May 30, 4:15 AM PDT | Severe Thunderstorm Warning | LOX | San Bernardino | 60 min |
| May 31, 5:15 PM PDT | Severe Thunderstorm Warning | STO | Nevada, Placer | 33 min |
| Sep 24, 1:27 PM PDT | Severe Thunderstorm Warning | STO | Butte, Tehama | 63 min |
| Sep 24, 2:08 PM PDT | Severe Thunderstorm Warning | STO | Butte | 52 min |
| Sep 24, 2:54 PM PDT | Severe Thunderstorm Warning | STO | El Dorado, Placer, Sacramento | 66 min |
| Sep 24, 2:54 PM PDT | Severe Thunderstorm Warning | STO | Sutter, Yuba | 66 min |
| Sep 25, 3:45 PM PDT | Severe Thunderstorm Warning | STO | Butte | 90 min |
| Sep 25, 5:15 PM PDT | Severe Thunderstorm Warning | STO | Butte | 60 min |
| Oct 2, 4:00 PM PDT | Severe Thunderstorm Warning | LOX | Los Angeles | 90 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
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.