Alert archive / Washington / Mesoscale Discussions / 2020
Mesoscale Discussions in Washington, May 2020
6 mesoscale discussions in May 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 May 2020. Tap one for its archive.
- Mesoscale Discussions
- 6
- Busiest day
- May 30, 20202 mesoscale discussions
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 |
|---|---|---|---|---|
| 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 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Columbia County5
- Garfield County5
- Asotin County4
- Benton County4
- Spokane County4
- Whitman County4
- Adams County3
- Franklin County3
- Klickitat County3
- Lincoln County3
- Walla Walla County3
- Yakima County2
- Douglas County2
- Ferry County2
- Grant County2
- Pend Oreille County2
- Stevens County2
- Chelan County1
- Kittitas County1
- Okanogan County1
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. Warning verification from the Mesonet's Cow. Rebuilt daily.