Alert archive / Wisconsin / Severe Thunderstorm Warnings / 2021
Severe Thunderstorm Warnings in Wisconsin, August 2021
105 severe thunderstorm warnings in August 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 warnings reaches back to 1986.
Severe Thunderstorm Warnings by county
Each county as a circle sized by its count in August 2021. Tap one for its archive.
- Severe Thunderstorm Warnings
- 105
- Busiest day
- August 11, 202129 severe thunderstorm warnings
Over time
By day
Days in UTC, the clock the archive keeps.
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 |
|---|---|---|---|---|
| Aug 6, 4:04 PM CDT | Severe Thunderstorm Warning | MKX | Fond du Lac, Sheboygan | 41 min |
| Aug 6, 4:09 PM CDT | Severe Thunderstorm Warning | MKX | Dodge, Fond du Lac | 39 min |
| Aug 6, 4:21 PM CDT | Severe Thunderstorm Warning | MKX | Sheboygan | 24 min |
| Aug 6, 4:38 PM CDT | Severe Thunderstorm Warning | MKX | Sheboygan | 52 min |
| Aug 6, 4:58 PM CDT | Severe Thunderstorm Warning | MKX | Dodge, Jefferson | 32 min |
| Aug 6, 5:06 PM CDT | Severe Thunderstorm Warning | MKX | Ozaukee, Sheboygan | 24 min |
| Aug 6, 6:22 PM CDT | Severe Thunderstorm Warning | MKX | Jefferson | 38 min |
| Aug 6, 7:38 PM CDT | Severe Thunderstorm Warning | MKX | Jefferson | 37 min |
| Aug 6, 8:14 PM CDT | Severe Thunderstorm Warning | MKX | Rock, Walworth | 31 min |
| Aug 6, 9:45 PM CDT | Severe Thunderstorm Warning | MKX | Dane | 30 min |
| Aug 7, 11:24 AM CDT | Severe Thunderstorm Warning | ARX | La Crosse, Vernon | 27 min |
| Aug 7, 11:26 AM CDT | Severe Thunderstorm Warning | ARX | Crawford, Richland, Vernon | 21 min |
| Aug 7, 12:32 PM CDT | Severe Thunderstorm Warning | MKX | Jefferson | 43 min |
| Aug 7, 12:54 PM CDT | Severe Thunderstorm Warning | MKX | Jefferson, Waukesha | 45 min |
| Aug 7, 1:17 PM CDT | Severe Thunderstorm Warning | ARX | Richland, Vernon | 58 min |
| Aug 7, 1:48 PM CDT | Severe Thunderstorm Warning | MKX | Sauk | 42 min |
| Aug 7, 3:35 PM CDT | Severe Thunderstorm Warning | ARX | Vernon | 55 min |
| Aug 7, 3:52 PM CDT | Severe Thunderstorm Warning | ARX | Crawford | 38 min |
| Aug 7, 3:53 PM CDT | Severe Thunderstorm Warning | MKX | Sauk | 52 min |
| Aug 7, 4:05 PM CDT | Severe Thunderstorm Warning | ARX | Richland | 40 min |
| Aug 7, 4:33 PM CDT | Severe Thunderstorm Warning | MKX | Columbia, Dane, Iowa, Sauk | 57 min |
| Aug 7, 5:17 PM CDT | Severe Thunderstorm Warning | MKX | Columbia, Green Lake, Marquette, Sauk | 58 min |
| Aug 7, 5:31 PM CDT | Severe Thunderstorm Warning | MKX | Columbia, Dane | 59 min |
| Aug 7, 5:53 PM CDT | Severe Thunderstorm Warning | ARX | Juneau, Monroe, Vernon | 37 min |
| Aug 7, 6:09 PM CDT | Severe Thunderstorm Warning | MKX | Dane | 66 min |
| Aug 7, 6:25 PM CDT | Severe Thunderstorm Warning | MKX | Dane | 50 min |
| Aug 8, 3:32 PM CDT | Severe Thunderstorm Warning | ARX | Adams | 31 min |
| Aug 8, 3:54 PM CDT | Severe Thunderstorm Warning | GRB | Waushara | 51 min |
| Aug 8, 4:16 PM CDT | Severe Thunderstorm Warning | GRB | Waushara, Winnebago | 29 min |
| Aug 8, 4:24 PM CDT | Severe Thunderstorm Warning | MKX | Green Lake, Marquette | 36 min |
| Aug 8, 4:30 PM CDT | Severe Thunderstorm Warning | GRB | Outagamie, Portage, Shawano, Waupaca, Waushara, Winnebago | 60 min |
| Aug 8, 4:46 PM CDT | Severe Thunderstorm Warning | GRB | Waushara, Winnebago | 29 min |
| Aug 8, 4:50 PM CDT | Severe Thunderstorm Warning | MKX | Washington | 25 min |
| Aug 8, 5:45 PM CDT | Severe Thunderstorm Warning | MKX | Sheboygan | 30 min |
| Aug 8, 6:46 PM CDT | Severe Thunderstorm Warning | GRB | Brown, Door, Kewaunee | 29 min |
| Aug 10, 11:52 AM CDT | Severe Thunderstorm Warning | DLH | Ashland, Bayfield, Sawyer | 38 min |
| Aug 10, 12:21 PM CDT | Severe Thunderstorm Warning | DLH | Ashland, Iron | 39 min |
| Aug 10, 3:23 PM CDT | Severe Thunderstorm Warning | ARX | Crawford, Grant | 52 min |
| Aug 10, 3:56 PM CDT | Severe Thunderstorm Warning | ARX | Crawford, Grant, Richland | 64 min |
| Aug 10, 4:02 PM CDT | Severe Thunderstorm Warning | MKX | Dane, Iowa, Lafayette, Sauk | 73 min |
| Aug 10, 4:25 PM CDT | Severe Thunderstorm Warning | MKX | Iowa, Lafayette | 80 min |
| Aug 10, 4:57 PM CDT | Severe Thunderstorm Warning | ARX | Richland | 18 min |
| Aug 10, 5:08 PM CDT | Severe Thunderstorm Warning | MKX | Columbia, Dane, Green, Iowa, Sauk | 67 min |
| Aug 10, 5:42 PM CDT | Severe Thunderstorm Warning | MKX | Dane, Dodge, Jefferson, Rock | 78 min |
| Aug 10, 6:08 PM CDT | Severe Thunderstorm Warning | MKX | Dodge, Jefferson, Kenosha, Racine, Walworth, Washington and 1 more | 97 min |
| Aug 10, 6:12 PM CDT | Severe Thunderstorm Warning | MKX | Columbia, Dane | 20 min |
| Aug 10, 6:29 PM CDT | Severe Thunderstorm Warning | GRB | Brown, Outagamie | 46 min |
| Aug 10, 6:41 PM CDT | Severe Thunderstorm Warning | GRB | Marinette, Oconto | 49 min |
| Aug 10, 6:51 PM CDT | Severe Thunderstorm Warning | MKX | Kenosha, Milwaukee, Ozaukee, Racine | 54 min |
| Aug 10, 6:59 PM CDT | Severe Thunderstorm Warning | GRB | Brown, Door, Kewaunee | 46 min |
| Aug 10, 7:24 PM CDT | Severe Thunderstorm Warning | MKX | Sheboygan | 51 min |
| Aug 10, 7:43 PM CDT | Severe Thunderstorm Warning | MKX | Kenosha, Milwaukee, Ozaukee, Racine | 32 min |
| Aug 10, 7:52 PM CDT | Severe Thunderstorm Warning | GRB | Calumet, Kewaunee, Manitowoc | 38 min |
| Aug 11, 12:18 PM CDT | Severe Thunderstorm Warning | ARX | Taylor | 42 min |
| Aug 11, 12:18 PM CDT | Severe Thunderstorm Warning | GRB | Lincoln, Marathon | 42 min |
| Aug 11, 12:38 PM CDT | Severe Thunderstorm Warning | GRB | Marathon, Portage, Wood | 52 min |
| Aug 11, 12:53 PM CDT | Severe Thunderstorm Warning | GRB | Florence, Forest, Marinette | 37 min |
| Aug 11, 1:07 PM CDT | Severe Thunderstorm Warning | ARX | La Crosse, Monroe | 38 min |
| Aug 11, 1:20 PM CDT | Severe Thunderstorm Warning | GRB | Langlade, Lincoln, Marathon, Menominee, Shawano | 40 min |
| Aug 11, 1:24 PM CDT | Severe Thunderstorm Warning | GRB | Marathon, Menominee, Portage, Shawano, Waupaca | 51 min |
| Aug 11, 1:31 PM CDT | Severe Thunderstorm Warning | GRB | Oconto, Shawano, Waupaca | 44 min |
| Aug 11, 1:41 PM CDT | Severe Thunderstorm Warning | ARX | Juneau, Monroe | 64 min |
| Aug 11, 1:54 PM CDT | Severe Thunderstorm Warning | GRB | Portage, Wood | 51 min |
| Aug 11, 2:06 PM CDT | Severe Thunderstorm Warning | ARX | La Crosse, Monroe | 39 min |
| Aug 11, 2:18 PM CDT | Severe Thunderstorm Warning | ARX | La Crosse, Monroe, Vernon | 42 min |
| Aug 11, 2:27 PM CDT | Severe Thunderstorm Warning | GRB | Brown, Oconto | 35 min |
| Aug 11, 2:32 PM CDT | Severe Thunderstorm Warning | ARX | Monroe | 28 min |
| Aug 11, 2:46 PM CDT | Severe Thunderstorm Warning | MKX | Green Lake, Marquette | 59 min |
| Aug 11, 2:47 PM CDT | Severe Thunderstorm Warning | GRB | Waushara | 43 min |
| Aug 11, 2:51 PM CDT | Severe Thunderstorm Warning | GRB | Brown, Door, Kewaunee | 39 min |
| Aug 11, 3:06 PM CDT | Severe Thunderstorm Warning | ARX | Richland, Vernon | 54 min |
| Aug 11, 3:08 PM CDT | Severe Thunderstorm Warning | GRB | Outagamie, Shawano, Waupaca | 38 min |
| Aug 11, 3:29 PM CDT | Severe Thunderstorm Warning | GRB | Waushara | 18 min |
| Aug 11, 3:30 PM CDT | Severe Thunderstorm Warning | GRB | Brown, Door, Kewaunee, Oconto, Outagamie, Shawano | 60 min |
| Aug 11, 4:22 PM CDT | Severe Thunderstorm Warning | MKX | Iowa | 53 min |
| Aug 11, 4:23 PM CDT | Severe Thunderstorm Warning | ARX | Grant | 22 min |
| Aug 11, 5:10 PM CDT | Severe Thunderstorm Warning | MKX | Iowa | 50 min |
| Aug 11, 5:49 PM CDT | Severe Thunderstorm Warning | MKX | Milwaukee, Waukesha | 41 min |
| Aug 11, 6:24 PM CDT | Severe Thunderstorm Warning | MKX | Kenosha, Racine, Walworth | 53 min |
| Aug 24, 6:50 AM CDT | Severe Thunderstorm Warning | ARX | Jackson, Trempealeau | 40 min |
| Aug 24, 6:50 AM CDT | Severe Thunderstorm Warning | MPX | Chippewa, Eau Claire | 25 min |
| Aug 24, 7:18 AM CDT | Severe Thunderstorm Warning | ARX | Clark, Jackson | 72 min |
| Aug 24, 7:44 AM CDT | Severe Thunderstorm Warning | GRB | Marathon, Wood | 76 min |
| Aug 24, 8:27 AM CDT | Severe Thunderstorm Warning | GRB | Marathon, Portage, Wood | 63 min |
| Aug 24, 11:35 AM CDT | Severe Thunderstorm Warning | GRB | Waushara, Winnebago | 25 min |
| Aug 24, 12:05 PM CDT | Severe Thunderstorm Warning | GRB | Brown, Kewaunee, Manitowoc | 25 min |
| Aug 24, 12:23 PM CDT | Severe Thunderstorm Warning | GRB | Manitowoc | 37 min |
| Aug 24, 4:09 PM CDT | Severe Thunderstorm Warning | ARX | Grant | 36 min |
| Aug 24, 4:13 PM CDT | Severe Thunderstorm Warning | MKX | Lafayette | 32 min |
| Aug 24, 4:18 PM CDT | Severe Thunderstorm Warning | MKX | Iowa, Lafayette | 27 min |
| Aug 24, 4:39 PM CDT | Severe Thunderstorm Warning | MKX | Lafayette | 47 min |
| Aug 24, 6:10 PM CDT | Severe Thunderstorm Warning | MKX | Rock | 33 min |
| Aug 26, 2:44 PM CDT | Severe Thunderstorm Warning | MPX | Pierce, Saint Croix | 46 min |
| Aug 27, 8:57 AM CDT | Severe Thunderstorm Warning | MKX | Dane, Iowa, Sauk | 48 min |
| Aug 27, 9:27 AM CDT | Severe Thunderstorm Warning | MKX | Columbia, Dane, Sauk | 48 min |
| Aug 27, 4:07 PM CDT | Severe Thunderstorm Warning | MKX | Sheboygan | 26 min |
| Aug 27, 4:44 PM CDT | Severe Thunderstorm Warning | MKX | Dodge, Washington | 46 min |
| Aug 27, 7:55 PM CDT | Severe Thunderstorm Warning | GRB | Brown, Oconto, Outagamie, Shawano | 65 min |
| Aug 27, 8:03 PM CDT | Severe Thunderstorm Warning | ARX | Crawford, Grant | 42 min |
| Aug 27, 8:48 PM CDT | Severe Thunderstorm Warning | ARX | Grant | 42 min |
| Aug 27, 11:31 PM CDT | Severe Thunderstorm Warning | ARX | Richland, Vernon | 59 min |
| Aug 27, 11:53 PM CDT | Severe Thunderstorm Warning | ARX | Richland | 37 min |
| Aug 28, 1:40 AM CDT | Severe Thunderstorm Warning | ARX | Crawford, Richland | 49 min |
| Aug 28, 12:47 PM CDT | Severe Thunderstorm Warning | DLH | Burnett | 47 min |
| Aug 28, 1:29 PM CDT | Severe Thunderstorm Warning | MPX | Polk | 46 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Dane County11
- Richland County9
- Vernon County8
- Sauk County8
- Iowa County8
- Brown County8
- Sheboygan County7
- Jefferson County7
- Waushara County7
- Shawano County7
- Crawford County6
- Columbia County6
- Monroe County6
- Kewaunee County6
- Grant County6
- Marathon County6
- Dodge County5
- Outagamie County5
- Portage County5
- Lafayette County5
- Oconto County5
- La Crosse County4
- Winnebago County4
- Waupaca County4
- Door County4
- Kenosha County4
- Racine County4
- Wood County4
- Ozaukee County3
- Rock County3
- Walworth County3
- Waukesha County3
- Green Lake County3
- Marquette County3
- Washington County3
- Milwaukee County3
- Manitowoc County3
- Fond du Lac County2
- Juneau County2
- Ashland County2
22 more counties
- Marinette County2
- Lincoln County2
- Menominee County2
- Jackson County2
- Adams County1
- Bayfield County1
- Sawyer County1
- Iron County1
- Green County1
- Calumet County1
- Taylor County1
- Florence County1
- Forest County1
- Langlade County1
- Trempealeau County1
- Chippewa County1
- Eau Claire County1
- Clark County1
- Pierce County1
- Saint Croix County1
- Burnett County1
- Polk County1
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. Rebuilt daily.