Alert archive / Wisconsin / Severe Thunderstorm Warnings
Severe Thunderstorm Warnings in Wisconsin, 2015
225 severe thunderstorm warnings in 2015. 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 2015. Tap one for its archive.
- Severe Thunderstorm Warnings
- 225
- Busiest month
- July79 severe thunderstorm warnings
- Busiest day
- July 13, 201546 severe thunderstorm warnings
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
123 of 225 severe thunderstorm warnings covering Wisconsin in 2015 had a qualifying storm report inside them; 332 of 445 hail, wind and damage reports fell inside a warning, on average 24 minutes after it went out.
Wisconsin, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Severe thunderstorm warnings | 225 | 123 | 45% | 445 | 75% | 24 min |
Each office's whole area, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Duluth, MN: severe thunderstorm warnings | 119 | 40 | 66% | 110 | 74% | 19 min |
| NWS Milwaukee, WI: severe thunderstorm warnings | 74 | 40 | 46% | 194 | 73% | 24 min |
| NWS Green Bay, WI: severe thunderstorm warnings | 66 | 33 | 50% | 101 | 80% | 25 min |
| NWS Twin Cities, MN: severe thunderstorm warnings | 131 | 67 | 49% | 307 | 63% | 28 min |
| NWS La Crosse, WI: severe thunderstorm warnings | 47 | 33 | 30% | 124 | 83% | 23 min |
An office's figures cover every county it serves, including across state lines.
Verified by the Iowa Environmental Mesonet's Cow, which matches each storm-based warning with the local storm reports inside its polygon while it was in force, within 15 km of its edge: a tornado warning counts as verified on a tornado report, a severe thunderstorm warning on hail of 1 inch or more, a gust of 58 mph or more, or wind damage, a flash flood warning on a flash flood report. The false alarm ratio is the share of warnings with no such report; "inside a warning" is the probability of detection, the share of reports that fell inside one; lead time runs from the warning's issue to each report inside it, counting zero for a report that came first. A warning with no report is not proof nothing happened: reports come from spotters, the public and damage surveys, and are thin where few people live.
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 |
|---|---|---|---|---|
| Apr 9, 4:59 PM CDT | Severe Thunderstorm Warning | MKX | Rock, Walworth | 31 min |
| Apr 9, 5:00 PM CDT | Severe Thunderstorm Warning | MKX | Iowa, Sauk | 45 min |
| Apr 9, 5:12 PM CDT | Severe Thunderstorm Warning | MKX | Rock | 21 min |
| Apr 9, 5:29 PM CDT | Severe Thunderstorm Warning | ARX | Grant | 30 min |
| Apr 9, 5:36 PM CDT | Severe Thunderstorm Warning | MKX | Rock, Walworth | 24 min |
| Apr 9, 5:39 PM CDT | Severe Thunderstorm Warning | MKX | Columbia, Dane, Iowa, Sauk | 36 min |
| Apr 9, 7:09 PM CDT | Severe Thunderstorm Warning | MKX | Kenosha, Racine, Walworth | 36 min |
| Apr 9, 7:16 PM CDT | Severe Thunderstorm Warning | MKX | Rock, Walworth | 29 min |
| Apr 9, 7:20 PM CDT | Severe Thunderstorm Warning | ARX | Monroe | 25 min |
| Apr 9, 7:26 PM CDT | Severe Thunderstorm Warning | MKX | Kenosha, Racine, Walworth | 34 min |
| Apr 9, 7:36 PM CDT | Severe Thunderstorm Warning | MKX | Rock, Walworth | 24 min |
| Apr 9, 7:43 PM CDT | Severe Thunderstorm Warning | MKX | Kenosha, Milwaukee, Racine, Walworth, Waukesha | 32 min |
| Apr 9, 7:48 PM CDT | Severe Thunderstorm Warning | MKX | Kenosha, Racine, Walworth | 27 min |
| Apr 9, 8:14 PM CDT | Severe Thunderstorm Warning | MKX | Kenosha, Milwaukee, Racine | 31 min |
| May 3, 2:48 PM CDT | Severe Thunderstorm Warning | DLH | Bayfield, Douglas, Sawyer | 42 min |
| May 3, 5:08 PM CDT | Severe Thunderstorm Warning | MPX | Saint Croix | 52 min |
| May 3, 5:34 PM CDT | Severe Thunderstorm Warning | MPX | Pierce | 26 min |
| May 3, 5:55 PM CDT | Severe Thunderstorm Warning | GRB | Oneida | 29 min |
| May 3, 5:58 PM CDT | Severe Thunderstorm Warning | MPX | Dunn, Pierce, Saint Croix | 62 min |
| May 3, 6:53 PM CDT | Severe Thunderstorm Warning | MPX | Chippewa, Dunn, Eau Claire, Pepin | 67 min |
| May 3, 11:39 PM CDT | Severe Thunderstorm Warning | MKX | Dodge, Jefferson | 36 min |
| May 4, 12:10 AM CDT | Severe Thunderstorm Warning | MKX | Dane | 35 min |
| May 4, 1:11 AM CDT | Severe Thunderstorm Warning | MKX | Rock, Walworth | 23 min |
| May 7, 5:24 PM CDT | Severe Thunderstorm Warning | ARX | Buffalo, Trempealeau | 35 min |
| May 17, 8:28 PM CDT | Severe Thunderstorm Warning | DLH | Ashland, Iron | 32 min |
| May 27, 5:27 PM CDT | Severe Thunderstorm Warning | GRB | Oneida, Vilas | 36 min |
| May 29, 5:28 PM CDT | Severe Thunderstorm Warning | GRB | Langlade, Menominee | 32 min |
| May 29, 5:56 PM CDT | Severe Thunderstorm Warning | GRB | Langlade, Menominee, Oconto | 49 min |
| Jun 8, 1:46 PM CDT | Severe Thunderstorm Warning | MKX | Kenosha | 44 min |
| Jun 8, 8:59 PM CDT | Severe Thunderstorm Warning | GRB | Wood | 11 min |
| Jun 10, 12:32 AM CDT | Severe Thunderstorm Warning | GRB | Vilas | 30 min |
| Jun 20, 2:02 PM CDT | Severe Thunderstorm Warning | MKX | Dane, Iowa, Sauk | 27 min |
| Jun 22, 4:18 AM CDT | Severe Thunderstorm Warning | DLH | Burnett | 27 min |
| Jun 22, 6:19 AM CDT | Severe Thunderstorm Warning | DLH | Douglas | 26 min |
| Jun 22, 6:54 AM CDT | Severe Thunderstorm Warning | ARX | Crawford | 66 min |
| Jun 22, 8:27 AM CDT | Severe Thunderstorm Warning | ARX | Crawford | 33 min |
| Jun 22, 8:40 AM CDT | Severe Thunderstorm Warning | ARX | Grant, Richland | 50 min |
| Jun 22, 9:00 AM CDT | Severe Thunderstorm Warning | MKX | Columbia, Dane, Green, Iowa, Lafayette, Rock and 1 more | 60 min |
| Jun 22, 9:58 AM CDT | Severe Thunderstorm Warning | MKX | Columbia, Dane, Dodge, Green, Iowa, Jefferson and 4 more | 62 min |
| Jun 22, 10:38 AM CDT | Severe Thunderstorm Warning | MKX | Jefferson, Kenosha, Milwaukee, Racine, Walworth, Waukesha | 53 min |
| Jun 22, 4:18 PM CDT | Severe Thunderstorm Warning | DLH | Burnett | 27 min |
| Jun 22, 4:32 PM CDT | Severe Thunderstorm Warning | DLH | Burnett | 12 min |
| Jun 22, 4:43 PM CDT | Severe Thunderstorm Warning | DLH | Washburn | 32 min |
| Jun 22, 4:55 PM CDT | Severe Thunderstorm Warning | GRB | Vilas | 50 min |
| Jun 22, 7:41 PM CDT | Severe Thunderstorm Warning | GRB | Marinette | 34 min |
| Jun 29, 11:11 AM CDT | Severe Thunderstorm Warning | DLH | Douglas | 19 min |
| Jun 29, 11:34 AM CDT | Severe Thunderstorm Warning | DLH | Douglas | 19 min |
| Jun 29, 11:44 AM CDT | Severe Thunderstorm Warning | DLH | Douglas | 26 min |
| Jun 29, 12:09 PM CDT | Severe Thunderstorm Warning | DLH | Burnett, Douglas, Washburn | 36 min |
| Jun 29, 12:12 PM CDT | Severe Thunderstorm Warning | DLH | Bayfield, Douglas | 33 min |
| Jun 29, 12:44 PM CDT | Severe Thunderstorm Warning | DLH | Bayfield, Sawyer, Washburn | 33 min |
| Jun 29, 3:24 PM CDT | Severe Thunderstorm Warning | ARX | Buffalo, Jackson, Trempealeau | 51 min |
| Jun 29, 4:08 PM CDT | Severe Thunderstorm Warning | GRB | Waushara | 27 min |
| Jun 29, 4:28 PM CDT | Severe Thunderstorm Warning | ARX | Buffalo, La Crosse, Trempealeau | 32 min |
| Jun 29, 4:39 PM CDT | Severe Thunderstorm Warning | MPX | Dunn, Eau Claire | 25 min |
| Jun 29, 4:57 PM CDT | Severe Thunderstorm Warning | ARX | La Crosse | 33 min |
| Jun 29, 5:00 PM CDT | Severe Thunderstorm Warning | MPX | Polk | 60 min |
| Jun 29, 5:20 PM CDT | Severe Thunderstorm Warning | ARX | Vernon | 55 min |
| Jun 29, 6:06 PM CDT | Severe Thunderstorm Warning | ARX | Crawford | 54 min |
| Jun 29, 6:28 PM CDT | Severe Thunderstorm Warning | MPX | Saint Croix | 47 min |
| Jun 29, 6:40 PM CDT | Severe Thunderstorm Warning | ARX | Crawford, Grant | 50 min |
| Jul 3, 6:14 PM CDT | Severe Thunderstorm Warning | DLH | Douglas | 31 min |
| Jul 3, 6:40 PM CDT | Severe Thunderstorm Warning | DLH | Douglas, Washburn | 20 min |
| Jul 12, 11:13 AM CDT | Severe Thunderstorm Warning | DLH | Burnett | 47 min |
| Jul 12, 9:24 PM CDT | Severe Thunderstorm Warning | MPX | Polk | 51 min |
| Jul 12, 9:48 PM CDT | Severe Thunderstorm Warning | MPX | Polk | 57 min |
| Jul 12, 9:59 PM CDT | Severe Thunderstorm Warning | MPX | Polk, Saint Croix | 61 min |
| Jul 12, 10:18 PM CDT | Severe Thunderstorm Warning | MPX | Barron, Dunn | 57 min |
| Jul 12, 11:26 PM CDT | Severe Thunderstorm Warning | MPX | Barron, Chippewa, Dunn, Rusk | 49 min |
| Jul 13, 12:03 AM CDT | Severe Thunderstorm Warning | MPX | Chippewa, Dunn, Eau Claire | 42 min |
| Jul 13, 2:10 AM CDT | Severe Thunderstorm Warning | GRB | Marathon, Portage, Wood | 65 min |
| Jul 13, 2:39 AM CDT | Severe Thunderstorm Warning | ARX | Adams, Juneau | 51 min |
| Jul 13, 2:41 AM CDT | Severe Thunderstorm Warning | MKX | Dodge, Fond du Lac, Sheboygan, Washington | 34 min |
| Jul 13, 2:46 AM CDT | Severe Thunderstorm Warning | MKX | Columbia, Marquette, Sauk | 59 min |
| Jul 13, 2:52 AM CDT | Severe Thunderstorm Warning | GRB | Waushara | 53 min |
| Jul 13, 3:06 AM CDT | Severe Thunderstorm Warning | GRB | Shawano, Waupaca | 54 min |
| Jul 13, 3:16 AM CDT | Severe Thunderstorm Warning | GRB | Portage | 19 min |
| Jul 13, 3:32 AM CDT | Severe Thunderstorm Warning | GRB | Winnebago | 43 min |
| Jul 13, 3:35 AM CDT | Severe Thunderstorm Warning | MKX | Columbia, Dane, Dodge, Fond du Lac, Green Lake, Iowa and 1 more | 55 min |
| Jul 13, 3:52 AM CDT | Severe Thunderstorm Warning | MKX | Dane, Dodge, Green, Iowa, Jefferson, Lafayette and 1 more | 53 min |
| Jul 13, 3:56 AM CDT | Severe Thunderstorm Warning | GRB | Outagamie | 34 min |
| Jul 13, 4:22 AM CDT | Severe Thunderstorm Warning | MKX | Dodge, Fond du Lac, Sheboygan, Washington, Waukesha | 38 min |
| Jul 13, 4:30 AM CDT | Severe Thunderstorm Warning | GRB | Brown | 45 min |
| Jul 13, 4:45 AM CDT | Severe Thunderstorm Warning | MKX | Green, Lafayette, Rock, Walworth | 45 min |
| Jul 13, 4:47 AM CDT | Severe Thunderstorm Warning | GRB | Kewaunee | 43 min |
| Jul 13, 4:52 AM CDT | Severe Thunderstorm Warning | MKX | Milwaukee, Ozaukee, Sheboygan | 38 min |
| Jul 13, 5:03 AM CDT | Severe Thunderstorm Warning | MKX | Kenosha, Racine | 57 min |
| Jul 13, 5:09 AM CDT | Severe Thunderstorm Warning | MKX | Washington, Waukesha | 21 min |
| Jul 13, 3:00 PM CDT | Severe Thunderstorm Warning | MPX | Polk | 45 min |
| Jul 13, 3:14 PM CDT | Severe Thunderstorm Warning | ARX | Buffalo, Trempealeau | 61 min |
| Jul 13, 4:03 PM CDT | Severe Thunderstorm Warning | MPX | Polk | 21 min |
| Jul 13, 4:08 PM CDT | Severe Thunderstorm Warning | ARX | La Crosse | 52 min |
| Jul 13, 4:13 PM CDT | Severe Thunderstorm Warning | MPX | Polk | 28 min |
| Jul 13, 4:28 PM CDT | Severe Thunderstorm Warning | ARX | Monroe | 62 min |
| Jul 13, 4:39 PM CDT | Severe Thunderstorm Warning | ARX | Vernon | 66 min |
| Jul 13, 5:03 PM CDT | Severe Thunderstorm Warning | ARX | Juneau, Monroe | 31 min |
| Jul 13, 5:07 PM CDT | Severe Thunderstorm Warning | GRB | Langlade, Lincoln, Marathon | 38 min |
| Jul 13, 5:13 PM CDT | Severe Thunderstorm Warning | ARX | Crawford, Richland, Vernon | 77 min |
| Jul 13, 5:40 PM CDT | Severe Thunderstorm Warning | ARX | Jackson, Trempealeau | 50 min |
| Jul 13, 5:41 PM CDT | Severe Thunderstorm Warning | MPX | Dunn, Saint Croix | 31 min |
| Jul 13, 5:42 PM CDT | Severe Thunderstorm Warning | GRB | Langlade, Marathon, Shawano | 33 min |
| Jul 13, 6:03 PM CDT | Severe Thunderstorm Warning | MPX | Dunn, Pepin | 31 min |
| Jul 13, 6:11 PM CDT | Severe Thunderstorm Warning | GRB | Langlade, Menominee, Shawano | 27 min |
| Jul 13, 6:14 PM CDT | Severe Thunderstorm Warning | MKX | Iowa, Sauk | 46 min |
| Jul 13, 6:19 PM CDT | Severe Thunderstorm Warning | GRB | Portage, Waupaca | 56 min |
| Jul 13, 6:22 PM CDT | Severe Thunderstorm Warning | MPX | Eau Claire | 23 min |
| Jul 13, 6:26 PM CDT | Severe Thunderstorm Warning | MKX | Columbia, Sauk | 49 min |
| Jul 13, 6:32 PM CDT | Severe Thunderstorm Warning | ARX | Buffalo, Trempealeau | 43 min |
| Jul 13, 6:40 PM CDT | Severe Thunderstorm Warning | GRB | Marinette | 50 min |
| Jul 13, 6:54 PM CDT | Severe Thunderstorm Warning | GRB | Waushara | 51 min |
| Jul 13, 7:00 PM CDT | Severe Thunderstorm Warning | ARX | Jackson | 45 min |
| Jul 13, 7:02 PM CDT | Severe Thunderstorm Warning | GRB | Door | 43 min |
| Jul 13, 7:11 PM CDT | Severe Thunderstorm Warning | MKX | Dane, Green, Iowa | 30 min |
| Jul 13, 7:15 PM CDT | Severe Thunderstorm Warning | MKX | Columbia, Dane, Dodge, Jefferson, Waukesha | 45 min |
| Jul 13, 7:28 PM CDT | Severe Thunderstorm Warning | ARX | Monroe | 47 min |
| Jul 13, 8:11 PM CDT | Severe Thunderstorm Warning | ARX | Juneau | 19 min |
| Jul 13, 8:33 PM CDT | Severe Thunderstorm Warning | MKX | Rock | 27 min |
| Jul 18, 12:55 AM CDT | Severe Thunderstorm Warning | MPX | Pierce | 50 min |
| Jul 18, 1:06 AM CDT | Severe Thunderstorm Warning | MPX | Polk, Saint Croix | 39 min |
| Jul 18, 1:23 AM CDT | Severe Thunderstorm Warning | ARX | Buffalo | 67 min |
| Jul 18, 1:27 AM CDT | Severe Thunderstorm Warning | MPX | Barron, Dunn, Pepin, Pierce, Polk, Saint Croix | 48 min |
| Jul 18, 2:00 AM CDT | Severe Thunderstorm Warning | MPX | Barron, Chippewa, Dunn, Eau Claire, Pepin | 60 min |
| Jul 18, 2:06 AM CDT | Severe Thunderstorm Warning | ARX | Buffalo, Trempealeau | 54 min |
| Jul 18, 2:32 AM CDT | Severe Thunderstorm Warning | ARX | Clark, Taylor | 73 min |
| Jul 18, 2:43 AM CDT | Severe Thunderstorm Warning | ARX | Jackson, La Crosse, Monroe, Trempealeau | 77 min |
| Jul 18, 3:11 AM CDT | Severe Thunderstorm Warning | GRB | Lincoln, Marathon, Portage, Wood | 64 min |
| Jul 18, 3:37 AM CDT | Severe Thunderstorm Warning | ARX | Adams, Juneau | 68 min |
| Jul 18, 4:15 AM CDT | Severe Thunderstorm Warning | GRB | Langlade, Marathon, Menominee, Portage, Shawano, Waupaca and 2 more | 60 min |
| Jul 18, 4:45 AM CDT | Severe Thunderstorm Warning | MKX | Columbia, Green Lake, Marquette, Sauk | 45 min |
| Jul 18, 5:14 AM CDT | Severe Thunderstorm Warning | GRB | Calumet, Outagamie, Waupaca, Waushara, Winnebago | 46 min |
| Jul 18, 5:15 AM CDT | Severe Thunderstorm Warning | MKX | Columbia, Dodge, Fond du Lac, Green Lake, Marquette | 45 min |
| Jul 18, 5:47 AM CDT | Severe Thunderstorm Warning | GRB | Brown, Calumet, Kewaunee, Manitowoc, Outagamie, Shawano and 1 more | 58 min |
| Jul 18, 1:26 PM CDT | Severe Thunderstorm Warning | MKX | Dane, Green, Rock | 34 min |
| Jul 18, 1:57 PM CDT | Severe Thunderstorm Warning | MKX | Lafayette | 18 min |
| Jul 18, 1:59 PM CDT | Severe Thunderstorm Warning | MKX | Dane, Green, Jefferson, Rock | 31 min |
| Jul 18, 2:09 PM CDT | Severe Thunderstorm Warning | MKX | Kenosha, Racine, Walworth | 51 min |
| Jul 18, 2:24 PM CDT | Severe Thunderstorm Warning | MKX | Dodge, Green, Jefferson, Rock, Walworth, Washington and 1 more | 51 min |
| Jul 18, 2:55 PM CDT | Severe Thunderstorm Warning | MKX | Kenosha, Milwaukee, Racine, Rock, Walworth, Waukesha | 35 min |
| Jul 18, 3:22 PM CDT | Severe Thunderstorm Warning | MKX | Kenosha, Milwaukee, Racine | 38 min |
| Jul 20, 3:48 PM CDT | Severe Thunderstorm Warning | GRB | Manitowoc | 27 min |
| Aug 2, 12:30 AM CDT | Severe Thunderstorm Warning | ARX | Taylor | 30 min |
| Aug 2, 12:40 AM CDT | Severe Thunderstorm Warning | GRB | Lincoln, Marathon | 50 min |
| Aug 2, 1:28 AM CDT | Severe Thunderstorm Warning | GRB | Langlade, Lincoln, Marathon | 47 min |
| Aug 2, 4:46 AM CDT | Severe Thunderstorm Warning | DLH | Burnett | 44 min |
| Aug 2, 5:23 AM CDT | Severe Thunderstorm Warning | DLH | Burnett, Sawyer, Washburn | 49 min |
| Aug 2, 6:46 AM CDT | Severe Thunderstorm Warning | DLH | Sawyer, Washburn | 29 min |
| Aug 2, 6:46 AM CDT | Severe Thunderstorm Warning | GRB | Florence | 29 min |
| Aug 2, 7:03 AM CDT | Severe Thunderstorm Warning | DLH | Sawyer, Washburn | 15 min |
| Aug 2, 7:07 AM CDT | Severe Thunderstorm Warning | DLH | Ashland, Iron, Price | 23 min |
| Aug 2, 8:17 AM CDT | Severe Thunderstorm Warning | DLH | Douglas, Washburn | 28 min |
| Aug 2, 8:38 AM CDT | Severe Thunderstorm Warning | DLH | Bayfield, Douglas, Sawyer, Washburn | 37 min |
| Aug 2, 9:03 AM CDT | Severe Thunderstorm Warning | DLH | Ashland, Price, Sawyer | 42 min |
| Aug 2, 9:42 AM CDT | Severe Thunderstorm Warning | DLH | Price, Sawyer | 48 min |
| Aug 2, 9:48 AM CDT | Severe Thunderstorm Warning | GRB | Oneida, Vilas | 27 min |
| Aug 2, 9:50 AM CDT | Severe Thunderstorm Warning | DLH | Price | 10 min |
| Aug 2, 11:34 AM CDT | Severe Thunderstorm Warning | DLH | Price | 26 min |
| Aug 2, 11:43 AM CDT | Severe Thunderstorm Warning | GRB | Lincoln, Oneida | 47 min |
| Aug 2, 12:02 PM CDT | Severe Thunderstorm Warning | GRB | Florence, Forest, Oneida | 28 min |
| Aug 2, 1:28 PM CDT | Severe Thunderstorm Warning | GRB | Marinette, Oconto | 32 min |
| Aug 2, 1:54 PM CDT | Severe Thunderstorm Warning | GRB | Door | 36 min |
| Aug 2, 2:16 PM CDT | Severe Thunderstorm Warning | GRB | Door, Oconto | 44 min |
| Aug 2, 2:33 PM CDT | Severe Thunderstorm Warning | GRB | Marathon, Portage, Wood | 27 min |
| Aug 2, 3:02 PM CDT | Severe Thunderstorm Warning | GRB | Brown, Oconto, Shawano | 58 min |
| Aug 2, 3:03 PM CDT | Severe Thunderstorm Warning | GRB | Portage, Waupaca, Wood | 27 min |
| Aug 2, 3:05 PM CDT | Severe Thunderstorm Warning | GRB | Kewaunee | 25 min |
| Aug 2, 3:28 PM CDT | Severe Thunderstorm Warning | GRB | Brown, Outagamie, Portage, Shawano, Waupaca, Waushara and 1 more | 62 min |
| Aug 2, 3:44 PM CDT | Severe Thunderstorm Warning | GRB | Brown, Door, Kewaunee, Oconto | 46 min |
| Aug 2, 4:01 PM CDT | Severe Thunderstorm Warning | GRB | Waupaca, Waushara, Winnebago | 59 min |
| Aug 2, 4:13 PM CDT | Severe Thunderstorm Warning | GRB | Marathon, Portage, Shawano, Waupaca | 32 min |
| Aug 2, 4:18 PM CDT | Severe Thunderstorm Warning | GRB | Brown, Kewaunee, Manitowoc | 42 min |
| Aug 2, 4:28 PM CDT | Severe Thunderstorm Warning | MKX | Fond du Lac, Green Lake | 62 min |
| Aug 2, 4:50 PM CDT | Severe Thunderstorm Warning | GRB | Outagamie, Portage, Shawano, Waupaca | 25 min |
| Aug 2, 4:50 PM CDT | Severe Thunderstorm Warning | GRB | Calumet, Winnebago | 14 min |
| Aug 2, 5:02 PM CDT | Severe Thunderstorm Warning | MKX | Fond du Lac, Sheboygan | 58 min |
| Aug 2, 5:19 PM CDT | Severe Thunderstorm Warning | GRB | Manitowoc | 26 min |
| Aug 2, 5:26 PM CDT | Severe Thunderstorm Warning | MKX | Fond du Lac | 34 min |
| Aug 2, 5:52 PM CDT | Severe Thunderstorm Warning | MKX | Dodge, Fond du Lac, Ozaukee, Sheboygan, Washington | 38 min |
| Aug 2, 6:29 PM CDT | Severe Thunderstorm Warning | MKX | Dodge, Fond du Lac | 31 min |
| Aug 2, 6:31 PM CDT | Severe Thunderstorm Warning | MKX | Ozaukee, Washington | 29 min |
| Aug 2, 6:48 PM CDT | Severe Thunderstorm Warning | MKX | Ozaukee, Washington | 42 min |
| Aug 2, 6:57 PM CDT | Severe Thunderstorm Warning | MKX | Ozaukee | 15 min |
| Aug 2, 7:53 PM CDT | Severe Thunderstorm Warning | MKX | Milwaukee, Waukesha | 48 min |
| Aug 2, 8:15 PM CDT | Severe Thunderstorm Warning | MKX | Kenosha, Racine, Walworth | 60 min |
| Aug 2, 8:49 PM CDT | Severe Thunderstorm Warning | MKX | Kenosha, Racine, Walworth | 41 min |
| Aug 10, 11:27 AM CDT | Severe Thunderstorm Warning | MKX | Milwaukee, Ozaukee, Washington, Waukesha | 33 min |
| Aug 10, 12:07 PM CDT | Severe Thunderstorm Warning | MKX | Milwaukee | 23 min |
| Aug 10, 3:47 PM CDT | Severe Thunderstorm Warning | MKX | Kenosha, Racine | 43 min |
| Aug 13, 3:12 PM CDT | Severe Thunderstorm Warning | GRB | Marinette, Oconto | 27 min |
| Aug 14, 1:45 PM CDT | Severe Thunderstorm Warning | GRB | Marinette | 30 min |
| Aug 14, 1:54 PM CDT | Severe Thunderstorm Warning | DLH | Ashland, Price, Sawyer | 36 min |
| Aug 14, 2:06 PM CDT | Severe Thunderstorm Warning | GRB | Door | 24 min |
| Aug 14, 3:13 PM CDT | Severe Thunderstorm Warning | GRB | Marinette | 32 min |
| Aug 14, 3:31 PM CDT | Severe Thunderstorm Warning | GRB | Oconto | 44 min |
| Aug 14, 3:34 PM CDT | Severe Thunderstorm Warning | GRB | Marinette | 26 min |
| Aug 14, 3:40 PM CDT | Severe Thunderstorm Warning | GRB | Menominee, Oconto | 25 min |
| Aug 14, 4:11 PM CDT | Severe Thunderstorm Warning | GRB | Brown, Kewaunee, Oconto, Outagamie, Shawano | 64 min |
| Aug 14, 4:51 PM CDT | Severe Thunderstorm Warning | GRB | Brown, Calumet, Manitowoc, Outagamie, Waupaca, Winnebago | 24 min |
| Aug 14, 5:06 PM CDT | Severe Thunderstorm Warning | DLH | Burnett, Washburn | 24 min |
| Aug 14, 5:12 PM CDT | Severe Thunderstorm Warning | GRB | Calumet, Manitowoc, Outagamie, Waupaca, Winnebago | 48 min |
| Aug 14, 5:19 PM CDT | Severe Thunderstorm Warning | MKX | Fond du Lac, Sheboygan | 56 min |
| Aug 14, 5:32 PM CDT | Severe Thunderstorm Warning | GRB | Manitowoc | 31 min |
| Aug 14, 5:58 PM CDT | Severe Thunderstorm Warning | GRB | Outagamie, Winnebago | 32 min |
| Aug 14, 6:29 PM CDT | Severe Thunderstorm Warning | GRB | Calumet, Winnebago | 35 min |
| Aug 14, 6:54 PM CDT | Severe Thunderstorm Warning | MKX | Dodge, Washington | 31 min |
| Aug 14, 7:14 PM CDT | Severe Thunderstorm Warning | MKX | Jefferson, Waukesha | 46 min |
| Aug 14, 10:04 PM CDT | Severe Thunderstorm Warning | MKX | Rock | 26 min |
| Aug 17, 3:12 PM CDT | Severe Thunderstorm Warning | MKX | Racine, Walworth, Waukesha | 33 min |
| Aug 18, 9:04 PM CDT | Severe Thunderstorm Warning | MKX | Racine, Walworth | 26 min |
| Aug 22, 7:22 PM CDT | Severe Thunderstorm Warning | MPX | Saint Croix | 23 min |
| Sep 2, 9:12 AM CDT | Severe Thunderstorm Warning | GRB | Florence | 33 min |
| Sep 2, 2:09 PM CDT | Severe Thunderstorm Warning | GRB | Langlade, Marathon, Menominee, Shawano | 36 min |
| Sep 2, 3:31 PM CDT | Severe Thunderstorm Warning | GRB | Marinette | 29 min |
| Sep 6, 6:09 PM CDT | Severe Thunderstorm Warning | ARX | Jackson, Monroe | 66 min |
| Sep 17, 4:19 PM CDT | Severe Thunderstorm Warning | MKX | Iowa, Lafayette | 26 min |
| Sep 17, 7:48 PM CDT | Severe Thunderstorm Warning | MKX | Lafayette | 27 min |
| Sep 17, 7:51 PM CDT | Severe Thunderstorm Warning | MKX | Jefferson, Rock, Walworth | 24 min |
| Sep 17, 8:20 PM CDT | Severe Thunderstorm Warning | MKX | Dane, Green, Lafayette | 25 min |
| Sep 17, 8:40 PM CDT | Severe Thunderstorm Warning | MKX | Green | 35 min |
| Sep 17, 9:15 PM CDT | Severe Thunderstorm Warning | MKX | Green, Rock | 45 min |
| Nov 11, 6:29 PM CST | Severe Thunderstorm Warning | MKX | Lafayette | 46 min |
| Nov 11, 6:30 PM CST | Severe Thunderstorm Warning | ARX | Grant | 45 min |
| Nov 11, 6:44 PM CST | Severe Thunderstorm Warning | MKX | Iowa, Lafayette | 46 min |
| Nov 11, 7:05 PM CST | Severe Thunderstorm Warning | MKX | Green | 40 min |
| Nov 11, 7:36 PM CST | Severe Thunderstorm Warning | MKX | Green, Rock | 39 min |
| Nov 11, 8:10 PM CST | Severe Thunderstorm Warning | MKX | Rock, Walworth | 30 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Walworth County21
- Rock County20
- Racine County15
- Kenosha County14
- Green County13
- Dane County12
- Dodge County12
- Iowa County11
- Waukesha County11
- Douglas County11
- Shawano County11
- Waupaca County11
- Sauk County10
- Dunn County10
- Lafayette County10
- Washburn County10
- Marathon County10
- Portage County10
- Fond du Lac County10
- Winnebago County10
- Columbia County9
- Milwaukee County9
- Sawyer County9
- Jefferson County9
- Oconto County9
- Polk County9
- Washington County9
- Outagamie County9
- Saint Croix County8
- Trempealeau County8
- Langlade County8
- Burnett County8
- Marinette County8
- Brown County8
- Buffalo County7
- Waushara County7
- Manitowoc County7
- Monroe County6
- Menominee County6
- Wood County6
32 more counties
- Sheboygan County6
- Kewaunee County6
- Ozaukee County6
- Calumet County6
- Price County6
- Oneida County5
- Eau Claire County5
- Crawford County5
- Jackson County5
- Lincoln County5
- Door County5
- Grant County4
- Bayfield County4
- Pierce County4
- Chippewa County4
- Pepin County4
- Ashland County4
- Vilas County4
- La Crosse County4
- Barron County4
- Juneau County4
- Green Lake County4
- Vernon County3
- Marquette County3
- Florence County3
- Iron County2
- Richland County2
- Adams County2
- Taylor County2
- Rusk County1
- Clark County1
- Forest County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20142016
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.