Alert archive / Wisconsin / Severe Thunderstorm Watches
Severe Thunderstorm Watches in Wisconsin, 2021
21 severe thunderstorm watches in 2021. 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 watches reaches back to 1997.
Severe Thunderstorm Watches by county
Each county as a circle sized by its count in 2021. Tap one for its archive.
- Severe Thunderstorm Watches
- 21
- Busiest month
- August7 severe thunderstorm watches
- Busiest day
- August 24, 20213 severe thunderstorm watches
Over time
By month
The alerts
Every alert, in the order issued. Times are local, Central Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 25, 2:53 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Ashland, Barron, Bayfield, Buffalo, Burnett and 36 more | 8 hr |
| Jun 17, 3:50 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Buffalo, Clark, Columbia, Crawford, Grant and 14 more | 6 hr |
| Jun 17, 7:22 PM CDT | Severe Thunderstorm Watch | SPC | Dunn, Eau Claire, Pepin, Pierce | 4 hr |
| Jun 17, 10:01 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Buffalo, Calumet, Clark, Columbia, Crawford and 33 more | 6 hr |
| Jun 20, 1:42 PM CDT | Severe Thunderstorm Watch | SPC | Buffalo, Crawford, Eau Claire, Grant, Jackson, La Crosse and 5 more | 7 hr |
| Jul 6, 2:01 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Brown, Buffalo, Calumet, Clark, Columbia and 27 more | 8 hr |
| Jul 14, 8:54 AM CDT | Severe Thunderstorm Watch | SPC | Buffalo, Crawford, Grant, Jackson, La Crosse, Monroe and 3 more | 5 hr |
| Jul 23, 4:48 PM CDT | Severe Thunderstorm Watch | SPC | Bayfield, Douglas | 7 hr |
| Jul 26, 7:25 PM CDT | Severe Thunderstorm Watch | SPC | Ashland, Bayfield, Burnett, Douglas, Iron, Price and 2 more | 3 hr |
| Jul 27, 8:03 PM CDT | Severe Thunderstorm Watch | SPC | Buffalo, Crawford, Grant, La Crosse, Pepin, Pierce and 3 more | 6 hr |
| Jul 28, 7:17 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Barron, Brown, Buffalo, Burnett, Calumet and 61 more | 7 hr |
| Aug 7, 4:36 PM CDT | Severe Thunderstorm Watch | SPC | Columbia, Dane, Dodge, Green, Iowa, Jefferson and 5 more | 4 hr |
| Aug 8, 1:59 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Brown, Calumet, Clark, Columbia, Dodge and 20 more | 6 hr |
| Aug 10, 2:08 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Crawford, Grant, Juneau, Richland, Vernon | 6 hr |
| Aug 10, 3:47 PM CDT | Severe Thunderstorm Watch | SPC | Brown, Calumet, Columbia, Dane, Dodge, Fond du Lac and 22 more | 6 hr |
| Aug 24, 2:17 AM CDT | Severe Thunderstorm Watch | SPC | Pierce, Polk, Saint Croix | 7 hr |
| Aug 24, 1:52 PM CDT | Severe Thunderstorm Watch | SPC | Grant | 5 hr |
| Aug 24, 3:55 PM CDT | Severe Thunderstorm Watch | SPC | Green, Lafayette, Rock, Walworth | 5 hr |
| Sep 7, 11:21 AM CDT | Severe Thunderstorm Watch | SPC | Dane, Dodge, Fond du Lac, Green, Jefferson, Kenosha and 8 more | 6 hr |
| Sep 20, 2:07 PM CDT | Severe Thunderstorm Watch | SPC | Barron, Buffalo, Chippewa, Clark, Crawford, Dunn and 14 more | 7 hr |
| Dec 15, 9:44 PM CST | Severe Thunderstorm Watch | SPC | Brown, Calumet, Columbia, Dane, Dodge, Door and 22 more | 3 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Vernon County11
- Richland County10
- Buffalo County9
- Jackson County9
- La Crosse County9
- Monroe County9
- Trempealeau County9
- Crawford County9
- Grant County9
- Columbia County8
- Dodge County8
- Adams County7
- Clark County7
- Juneau County7
- Pepin County7
- Waupaca County7
- Waushara County7
- Green Lake County7
- Sauk County7
- Fond du Lac County7
- Green County7
- Rock County7
- Sheboygan County7
- Walworth County7
- Eau Claire County6
- Pierce County6
- Portage County6
- Wood County6
- Marquette County6
- Calumet County6
- Dane County6
- Jefferson County6
- Outagamie County6
- Waukesha County6
- Winnebago County6
- Marathon County5
- Shawano County5
- Lafayette County5
- Washington County5
- Brown County5
32 more counties
- Kewaunee County5
- Manitowoc County5
- Dunn County4
- Menominee County4
- Polk County4
- Saint Croix County4
- Iowa County4
- Kenosha County4
- Milwaukee County4
- Ozaukee County4
- Racine County4
- Barron County3
- Bayfield County3
- Burnett County3
- Chippewa County3
- Douglas County3
- Forest County3
- Langlade County3
- Lincoln County3
- Marinette County3
- Oconto County3
- Oneida County3
- Price County3
- Rusk County3
- Sawyer County3
- Taylor County3
- Washburn County3
- Ashland County2
- Florence County2
- Iron County2
- Door County2
- Vilas County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20202022
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.