Alert archive / Washington / Mesoscale Discussions
Mesoscale Discussions in Washington, 2020
14 mesoscale discussions in 2020. 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 mesoscale discussions reaches back to 2003.
Mesoscale Discussions by county
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Mesoscale Discussions
- 14
- Busiest month
- May6 mesoscale discussions
- Busiest day
- May 30, 20202 mesoscale discussions
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 21, 6:42 AM PST | Mesoscale Discussion | SPC | Clallam, Grays Harbor, Jefferson, Mason, Pacific | 2 hr |
| May 2, 1:19 PM PDT | Mesoscale Discussion | SPC | Adams, Asotin, Benton, Columbia, Franklin, Garfield and 6 more | 2 hr |
| May 17, 2:01 PM PDT | Mesoscale Discussion | SPC | Asotin, Columbia, Garfield, Spokane, Whitman | 119 min |
| May 30, 11:20 AM PDT | Mesoscale Discussion | SPC | Benton, Klickitat | 115 min |
| May 30, 3:13 PM PDT | Mesoscale Discussion | SPC | Adams, Benton, Chelan, Columbia, Douglas, Ferry and 13 more | 2 hr |
| May 30, 8:06 PM PDT | Mesoscale Discussion | SPC | Adams, Asotin, Benton, Columbia, Douglas, Ferry and 9 more | 114 min |
| May 31, 1:38 AM PDT | Mesoscale Discussion | SPC | Asotin, Columbia, Garfield | 2 hr |
| Jun 11, 3:37 PM PDT | Mesoscale Discussion | SPC | Adams, Benton, Douglas, Ferry, Franklin, Grant and 5 more | 113 min |
| Jun 12, 5:00 PM PDT | Mesoscale Discussion | SPC | Asotin, Columbia, Garfield, Walla Walla, Whitman | 2 hr |
| Jun 24, 1:07 PM PDT | Mesoscale Discussion | SPC | Ferry, Pend Oreille, Spokane, Stevens | 2 hr |
| Aug 17, 4:27 PM PDT | Mesoscale Discussion | SPC | Asotin, Columbia | 93 min |
| Aug 17, 8:00 PM PDT | Mesoscale Discussion | SPC | Walla Walla | 90 min |
| Sep 18, 2:10 AM PDT | Mesoscale Discussion | SPC | Clark, Cowlitz | 2 hr |
| Oct 23, 3:36 PM PDT | Mesoscale Discussion | SPC | Spokane, Whitman | 4 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Columbia County7
- Asotin County6
- Garfield County6
- Spokane County6
- Walla Walla County6
- Whitman County6
- Benton County5
- Adams County4
- Franklin County4
- Klickitat County4
- Lincoln County4
- Ferry County4
- Stevens County4
- Yakima County3
- Douglas County3
- Grant County3
- Pend Oreille County3
- Clallam County1
- Grays Harbor County1
- Jefferson County1
- Mason County1
- Pacific County1
- Chelan County1
- Kittitas County1
- Okanogan County1
- Clark County1
- Cowlitz County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20192021
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.