Severe Thunderstorm Warnings in Washington
857 severe thunderstorm warnings 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 warnings reaches back to 1986.
Severe Thunderstorm Warnings by county
Each county as a circle sized by its count since 1986. Tap one for its archive.
- Severe Thunderstorm Warnings
- 857
- Busiest year
- 200855 severe thunderstorm warnings
- Average year
- 22over 39 years on file
Over time
By year
Before October 2007 these were issued for whole counties, and a storm crossing three counties was often three warnings; since then one polygon follows the storm. The count changed with the practice, not only with 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.
- Stevens County114
- Spokane County110
- Whitman County98
- Lincoln County90
- Pend Oreille County79
- Walla Walla County74
- Asotin County68
- Ferry County68
- Benton County63
- Okanogan County59
- Grant County58
- Garfield County56
- Columbia County55
- Adams County50
- Douglas County49
- Franklin County46
- Yakima County45
- Clark County35
- Klickitat County33
- Skamania County31
- Chelan County28
- Snohomish County21
- King County20
- Lewis County18
- Kittitas County18
- Pierce County17
- Cowlitz County16
- Wahkiakum County11
- Pacific County10
- Skagit County9
- Thurston County8
- Whatcom County7
- Kitsap County5
- Grays Harbor County5
- Island County3
- Jefferson County2
- Mason County2
- San Juan County1
The latest severe thunderstorm warnings
The most recent on file, newest first.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 29, 11:51 AM PDT | Severe Thunderstorm Warning | OTX | Douglas, Grant, Lincoln | 22 min |
| Aug 22, 11:54 PM PDT | Severe Thunderstorm Warning | OTX | Ferry | 36 min |
| Aug 22, 11:40 PM PDT | Severe Thunderstorm Warning | OTX | Stevens | 35 min |
| Jul 17, 5:58 AM PDT | Severe Thunderstorm Warning | OTX | Stevens | 32 min |
| Jul 17, 4:33 AM PDT | Severe Thunderstorm Warning | OTX | Lincoln | 42 min |
| May 28, 10:08 PM PDT | Severe Thunderstorm Warning | OTX | Ferry, Okanogan, Pend Oreille, Stevens | 67 min |
| May 28, 9:29 PM PDT | Severe Thunderstorm Warning | OTX | Chelan, Douglas, Grant, Okanogan | 91 min |
| May 28, 9:13 PM PDT | Severe Thunderstorm Warning | OTX | Ferry, Lincoln, Okanogan, Spokane, Stevens | 55 min |
| May 28, 9:00 PM PDT | Severe Thunderstorm Warning | OTX | Adams, Chelan, Douglas, Grant, Lincoln | 75 min |
| May 28, 8:48 PM PDT | Severe Thunderstorm Warning | OTX | Adams, Grant, Lincoln | 72 min |
| May 28, 8:00 PM PDT | Severe Thunderstorm Warning | OTX | Lincoln, Spokane, Stevens, Whitman | 60 min |
| May 28, 7:37 PM PDT | Severe Thunderstorm Warning | OTX | Spokane | 38 min |
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. Rebuilt daily.