Alert archive / Washington / Mesoscale Discussions
Mesoscale Discussions in Washington, 2009
10 mesoscale discussions in 2009. 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 2009. Tap one for its archive.
- Mesoscale Discussions
- 10
- Busiest month
- January2 mesoscale discussions
- Busiest day
- December 15, 20092 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 4, 3:58 PM PST | Mesoscale Discussion | SPC | Chelan, Douglas, Ferry, Grant, King, Kittitas and 8 more | 6 hr |
| Jan 4, 10:04 PM PST | Mesoscale Discussion | SPC | Adams, Asotin, Chelan, Columbia, Douglas, Ferry and 14 more | 4 hr |
| Feb 10, 4:23 AM PST | Mesoscale Discussion | SPC | Clallam, Grays Harbor, Jefferson, Mason, Thurston | 4 hr |
| May 18, 6:07 PM PDT | Mesoscale Discussion | SPC | Asotin | 83 min |
| May 29, 3:24 PM PDT | Mesoscale Discussion | SPC | Klickitat, Yakima | 66 min |
| Jul 5, 4:25 PM PDT | Mesoscale Discussion | SPC | Asotin, Columbia, Garfield, Walla Walla, Whitman | 65 min |
| Jul 12, 10:55 PM PDT | Mesoscale Discussion | SPC | Lincoln, Pend Oreille, Spokane, Stevens, Whitman | 65 min |
| Oct 17, 1:42 PM PDT | Mesoscale Discussion | SPC | Clallam, Clark, Cowlitz, Grays Harbor, Island, Jefferson and 11 more | 2 hr |
| Dec 15, 3:46 AM PST | Mesoscale Discussion | SPC | Benton, Franklin, Klickitat, Walla Walla | 4 hr |
| Dec 15, 9:25 AM PST | Mesoscale Discussion | SPC | Benton, Columbia, Franklin, Klickitat, Walla Walla, Yakima | 4 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Walla Walla County4
- King County3
- Lincoln County3
- Pend Oreille County3
- Skagit County3
- Snohomish County3
- Stevens County3
- Asotin County3
- Columbia County3
- Whitman County3
- Klickitat County3
- Chelan County2
- Douglas County2
- Ferry County2
- Kittitas County2
- Okanogan County2
- Whatcom County2
- Garfield County2
- Pierce County2
- Spokane County2
- Clallam County2
- Grays Harbor County2
- Jefferson County2
- Mason County2
- Thurston County2
- Yakima County2
- Benton County2
- Franklin County2
- Grant County1
- Skamania County1
- Adams County1
- Clark County1
- Cowlitz County1
- Island County1
- Kitsap County1
- Lewis County1
- Pacific County1
- San Juan County1
- Wahkiakum County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20082010
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.