Alert archive / Wisconsin / Severe Thunderstorm Warnings
Severe Thunderstorm Warnings in Wisconsin, 2019
271 severe thunderstorm warnings in 2019. 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 2019. Tap one for its archive.
- Severe Thunderstorm Warnings
- 271
- Busiest month
- July95 severe thunderstorm warnings
- Busiest day
- July 20, 201936 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.
141 of 271 severe thunderstorm warnings covering Wisconsin in 2019 had a qualifying storm report inside them; 352 of 481 hail, wind and damage reports fell inside a warning, on average 26 minutes after it went out.
Wisconsin, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Severe thunderstorm warnings | 271 | 141 | 48% | 481 | 73% | 26 min |
Each office's whole area, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Green Bay, WI: severe thunderstorm warnings | 71 | 42 | 41% | 166 | 81% | 29 min |
| NWS Milwaukee, WI: severe thunderstorm warnings | 60 | 32 | 47% | 157 | 66% | 24 min |
| NWS Duluth, MN: severe thunderstorm warnings | 142 | 50 | 65% | 138 | 66% | 22 min |
| NWS Twin Cities, MN: severe thunderstorm warnings | 206 | 102 | 50% | 383 | 74% | 21 min |
| NWS La Crosse, WI: severe thunderstorm warnings | 122 | 72 | 41% | 209 | 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 |
|---|---|---|---|---|
| Mar 14, 1:59 PM CDT | Severe Thunderstorm Warning | MKX | Jefferson, Rock | 46 min |
| Apr 17, 7:36 PM CDT | Severe Thunderstorm Warning | ARX | Grant | 39 min |
| Apr 17, 8:03 PM CDT | Severe Thunderstorm Warning | MKX | Iowa, Lafayette | 27 min |
| Apr 22, 5:21 PM CDT | Severe Thunderstorm Warning | MKX | Sauk | 39 min |
| May 5, 1:37 PM CDT | Severe Thunderstorm Warning | ARX | Crawford, Grant | 53 min |
| May 5, 4:02 PM CDT | Severe Thunderstorm Warning | ARX | Grant | 31 min |
| May 5, 5:12 PM CDT | Severe Thunderstorm Warning | MKX | Sauk | 33 min |
| May 5, 5:34 PM CDT | Severe Thunderstorm Warning | MKX | Columbia, Dane | 41 min |
| May 5, 6:10 PM CDT | Severe Thunderstorm Warning | MKX | Columbia, Dane | 32 min |
| May 16, 10:56 AM CDT | Severe Thunderstorm Warning | MKX | Dane, Green, Iowa, Lafayette | 49 min |
| May 24, 9:05 PM CDT | Severe Thunderstorm Warning | ARX | Crawford, Vernon | 55 min |
| May 24, 9:34 PM CDT | Severe Thunderstorm Warning | MKX | Lafayette | 26 min |
| May 31, 3:51 PM CDT | Severe Thunderstorm Warning | GRB | Marinette, Oconto | 39 min |
| May 31, 4:20 PM CDT | Severe Thunderstorm Warning | GRB | Oconto | 25 min |
| May 31, 4:42 PM CDT | Severe Thunderstorm Warning | GRB | Oconto | 34 min |
| May 31, 4:44 PM CDT | Severe Thunderstorm Warning | MPX | Barron | 31 min |
| May 31, 5:57 PM CDT | Severe Thunderstorm Warning | GRB | Menominee, Oconto, Shawano | 48 min |
| May 31, 10:38 PM CDT | Severe Thunderstorm Warning | GRB | Manitowoc | 22 min |
| Jun 1, 4:57 AM CDT | Severe Thunderstorm Warning | ARX | Buffalo | 22 min |
| Jun 1, 2:14 PM CDT | Severe Thunderstorm Warning | MKX | Dane, Green, Rock | 46 min |
| Jun 1, 3:31 PM CDT | Severe Thunderstorm Warning | MKX | Kenosha, Racine, Walworth | 44 min |
| Jun 1, 4:23 PM CDT | Severe Thunderstorm Warning | MKX | Kenosha, Walworth | 37 min |
| Jun 4, 5:03 PM CDT | Severe Thunderstorm Warning | MPX | Pierce | 27 min |
| Jun 4, 5:13 PM CDT | Severe Thunderstorm Warning | MPX | Pierce, Saint Croix | 32 min |
| Jun 4, 5:27 PM CDT | Severe Thunderstorm Warning | MPX | Pierce | 33 min |
| Jun 4, 5:58 PM CDT | Severe Thunderstorm Warning | ARX | Buffalo | 62 min |
| Jun 4, 6:00 PM CDT | Severe Thunderstorm Warning | MPX | Pepin, Pierce | 45 min |
| Jun 4, 6:50 PM CDT | Severe Thunderstorm Warning | ARX | Buffalo, Trempealeau | 63 min |
| Jun 4, 7:10 PM CDT | Severe Thunderstorm Warning | ARX | Jackson, La Crosse, Trempealeau | 65 min |
| Jun 4, 7:26 PM CDT | Severe Thunderstorm Warning | ARX | La Crosse, Vernon | 49 min |
| Jun 4, 7:59 PM CDT | Severe Thunderstorm Warning | DLH | Ashland, Sawyer | 31 min |
| Jun 4, 8:27 PM CDT | Severe Thunderstorm Warning | DLH | Price, Sawyer | 33 min |
| Jun 5, 5:33 PM CDT | Severe Thunderstorm Warning | GRB | Outagamie | 27 min |
| Jun 5, 5:56 PM CDT | Severe Thunderstorm Warning | GRB | Outagamie, Winnebago | 34 min |
| Jun 14, 6:25 PM CDT | Severe Thunderstorm Warning | MPX | Eau Claire | 35 min |
| Jun 14, 6:29 PM CDT | Severe Thunderstorm Warning | ARX | Clark, Jackson | 61 min |
| Jun 14, 6:57 PM CDT | Severe Thunderstorm Warning | MPX | Eau Claire | 33 min |
| Jun 14, 7:02 PM CDT | Severe Thunderstorm Warning | ARX | Jackson, Trempealeau | 58 min |
| Jun 14, 7:17 PM CDT | Severe Thunderstorm Warning | MPX | Pierce | 23 min |
| Jun 25, 1:34 PM CDT | Severe Thunderstorm Warning | MKX | Rock | 37 min |
| Jun 27, 11:56 AM CDT | Severe Thunderstorm Warning | DLH | Douglas, Washburn | 18 min |
| Jun 27, 12:42 PM CDT | Severe Thunderstorm Warning | MPX | Chippewa | 48 min |
| Jun 27, 1:37 PM CDT | Severe Thunderstorm Warning | ARX | La Crosse, Monroe | 53 min |
| Jun 27, 3:07 PM CDT | Severe Thunderstorm Warning | MKX | Iowa, Sauk | 53 min |
| Jun 27, 3:31 PM CDT | Severe Thunderstorm Warning | MKX | Marquette | 46 min |
| Jun 27, 3:36 PM CDT | Severe Thunderstorm Warning | MKX | Columbia, Dane | 54 min |
| Jun 27, 3:47 PM CDT | Severe Thunderstorm Warning | MKX | Green, Lafayette | 58 min |
| Jun 27, 3:49 PM CDT | Severe Thunderstorm Warning | MKX | Green Lake | 41 min |
| Jun 27, 3:51 PM CDT | Severe Thunderstorm Warning | GRB | Portage, Waupaca, Waushara | 54 min |
| Jun 27, 4:08 PM CDT | Severe Thunderstorm Warning | MKX | Dodge, Jefferson, Rock, Walworth, Waukesha | 52 min |
| Jun 27, 4:13 PM CDT | Severe Thunderstorm Warning | GRB | Winnebago | 62 min |
| Jun 27, 4:13 PM CDT | Severe Thunderstorm Warning | MKX | Fond du Lac | 62 min |
| Jun 27, 4:29 PM CDT | Severe Thunderstorm Warning | MKX | Ozaukee, Sheboygan, Washington | 76 min |
| Jun 27, 4:41 PM CDT | Severe Thunderstorm Warning | MKX | Milwaukee, Waukesha | 79 min |
| Jun 27, 4:49 PM CDT | Severe Thunderstorm Warning | GRB | Calumet | 56 min |
| Jun 27, 4:54 PM CDT | Severe Thunderstorm Warning | GRB | Outagamie | 50 min |
| Jun 27, 5:04 PM CDT | Severe Thunderstorm Warning | MKX | Kenosha, Racine, Rock, Walworth | 71 min |
| Jun 27, 5:18 PM CDT | Severe Thunderstorm Warning | GRB | Brown, Oconto, Shawano | 57 min |
| Jun 27, 5:19 PM CDT | Severe Thunderstorm Warning | GRB | Manitowoc | 51 min |
| Jun 27, 9:47 PM CDT | Severe Thunderstorm Warning | MPX | Pepin, Pierce | 43 min |
| Jun 27, 10:22 PM CDT | Severe Thunderstorm Warning | ARX | Trempealeau | 38 min |
| Jun 28, 12:09 AM CDT | Severe Thunderstorm Warning | ARX | Jackson, La Crosse, Monroe | 51 min |
| Jun 30, 10:12 AM CDT | Severe Thunderstorm Warning | MKX | Columbia, Green Lake, Marquette, Sauk | 63 min |
| Jun 30, 10:38 AM CDT | Severe Thunderstorm Warning | DLH | Burnett, Douglas, Washburn | 52 min |
| Jun 30, 10:48 AM CDT | Severe Thunderstorm Warning | MKX | Columbia, Dane, Dodge | 57 min |
| Jun 30, 11:16 AM CDT | Severe Thunderstorm Warning | DLH | Burnett | 29 min |
| Jun 30, 11:26 AM CDT | Severe Thunderstorm Warning | MKX | Dodge, Jefferson, Waukesha | 49 min |
| Jun 30, 11:59 AM CDT | Severe Thunderstorm Warning | MKX | Jefferson, Kenosha, Racine, Rock, Walworth, Waukesha | 76 min |
| Jun 30, 4:15 PM CDT | Severe Thunderstorm Warning | ARX | Crawford, Grant, Richland | 60 min |
| Jun 30, 4:39 PM CDT | Severe Thunderstorm Warning | ARX | Grant | 96 min |
| Jun 30, 5:27 PM CDT | Severe Thunderstorm Warning | MKX | Lafayette | 48 min |
| Jul 1, 12:42 AM CDT | Severe Thunderstorm Warning | MPX | Pierce | 33 min |
| Jul 2, 2:24 PM CDT | Severe Thunderstorm Warning | MKX | Ozaukee, Washington | 36 min |
| Jul 2, 4:25 PM CDT | Severe Thunderstorm Warning | MKX | Milwaukee, Waukesha | 35 min |
| Jul 2, 5:59 PM CDT | Severe Thunderstorm Warning | MKX | Columbia, Dane, Sauk | 31 min |
| Jul 3, 5:28 PM CDT | Severe Thunderstorm Warning | MKX | Sauk | 32 min |
| Jul 3, 6:18 PM CDT | Severe Thunderstorm Warning | ARX | Richland | 42 min |
| Jul 4, 6:06 PM CDT | Severe Thunderstorm Warning | MPX | Rusk | 24 min |
| Jul 4, 6:19 PM CDT | Severe Thunderstorm Warning | DLH | Price | 41 min |
| Jul 4, 6:50 PM CDT | Severe Thunderstorm Warning | DLH | Price, Sawyer | 25 min |
| Jul 4, 7:26 PM CDT | Severe Thunderstorm Warning | GRB | Portage, Waupaca, Waushara | 49 min |
| Jul 12, 1:52 PM CDT | Severe Thunderstorm Warning | GRB | Forest, Vilas | 38 min |
| Jul 15, 5:38 PM CDT | Severe Thunderstorm Warning | DLH | Burnett | 37 min |
| Jul 15, 5:40 PM CDT | Severe Thunderstorm Warning | DLH | Sawyer | 23 min |
| Jul 15, 7:39 PM CDT | Severe Thunderstorm Warning | DLH | Price | 21 min |
| Jul 15, 7:46 PM CDT | Severe Thunderstorm Warning | ARX | Taylor | 44 min |
| Jul 15, 8:00 PM CDT | Severe Thunderstorm Warning | DLH | Price | 30 min |
| Jul 15, 8:08 PM CDT | Severe Thunderstorm Warning | ARX | Clark, Taylor | 37 min |
| Jul 15, 8:46 PM CDT | Severe Thunderstorm Warning | ARX | Buffalo | 44 min |
| Jul 18, 3:50 AM CDT | Severe Thunderstorm Warning | ARX | Grant | 25 min |
| Jul 18, 11:51 AM CDT | Severe Thunderstorm Warning | DLH | Douglas | 24 min |
| Jul 18, 12:08 PM CDT | Severe Thunderstorm Warning | DLH | Douglas | 52 min |
| Jul 18, 11:12 PM CDT | Severe Thunderstorm Warning | ARX | La Crosse, Monroe, Vernon | 48 min |
| Jul 18, 11:32 PM CDT | Severe Thunderstorm Warning | ARX | Monroe | 28 min |
| Jul 19, 12:28 AM CDT | Severe Thunderstorm Warning | ARX | Richland, Vernon | 47 min |
| Jul 19, 12:34 AM CDT | Severe Thunderstorm Warning | MKX | Sauk | 41 min |
| Jul 19, 1:10 AM CDT | Severe Thunderstorm Warning | MKX | Sauk | 50 min |
| Jul 19, 1:38 AM CDT | Severe Thunderstorm Warning | MKX | Columbia, Dane | 52 min |
| Jul 19, 3:44 AM CDT | Severe Thunderstorm Warning | GRB | Door, Kewaunee | 31 min |
| Jul 19, 2:58 PM CDT | Severe Thunderstorm Warning | DLH | Burnett, Douglas, Washburn | 47 min |
| Jul 19, 3:47 PM CDT | Severe Thunderstorm Warning | DLH | Burnett, Douglas, Sawyer, Washburn | 43 min |
| Jul 19, 4:16 PM CDT | Severe Thunderstorm Warning | DLH | Burnett | 44 min |
| Jul 19, 4:29 PM CDT | Severe Thunderstorm Warning | DLH | Sawyer, Washburn | 31 min |
| Jul 19, 4:33 PM CDT | Severe Thunderstorm Warning | MPX | Polk | 42 min |
| Jul 19, 4:57 PM CDT | Severe Thunderstorm Warning | DLH | Sawyer | 33 min |
| Jul 19, 4:58 PM CDT | Severe Thunderstorm Warning | DLH | Burnett | 32 min |
| Jul 19, 5:06 PM CDT | Severe Thunderstorm Warning | MPX | Barron, Polk | 54 min |
| Jul 19, 5:25 PM CDT | Severe Thunderstorm Warning | MPX | Rusk | 35 min |
| Jul 19, 5:29 PM CDT | Severe Thunderstorm Warning | DLH | Price, Sawyer | 61 min |
| Jul 19, 5:58 PM CDT | Severe Thunderstorm Warning | MPX | Barron, Chippewa, Dunn, Polk, Rusk, Saint Croix | 62 min |
| Jul 19, 6:00 PM CDT | Severe Thunderstorm Warning | MPX | Polk | 45 min |
| Jul 19, 6:18 PM CDT | Severe Thunderstorm Warning | GRB | Lincoln, Oneida | 72 min |
| Jul 19, 6:33 PM CDT | Severe Thunderstorm Warning | DLH | Ashland, Iron, Price, Sawyer | 57 min |
| Jul 19, 6:34 PM CDT | Severe Thunderstorm Warning | MPX | Chippewa | 56 min |
| Jul 19, 6:37 PM CDT | Severe Thunderstorm Warning | ARX | Clark, Taylor | 83 min |
| Jul 19, 7:07 PM CDT | Severe Thunderstorm Warning | ARX | Clark | 53 min |
| Jul 19, 7:17 PM CDT | Severe Thunderstorm Warning | GRB | Langlade, Lincoln, Marathon, Portage, Wood | 73 min |
| Jul 19, 7:25 PM CDT | Severe Thunderstorm Warning | GRB | Forest, Langlade, Lincoln, Oneida | 65 min |
| Jul 19, 7:28 PM CDT | Severe Thunderstorm Warning | MPX | Barron, Dunn, Polk, Saint Croix | 47 min |
| Jul 19, 7:30 PM CDT | Severe Thunderstorm Warning | DLH | Price | 30 min |
| Jul 19, 8:00 PM CDT | Severe Thunderstorm Warning | ARX | Clark, Jackson | 90 min |
| Jul 19, 8:12 PM CDT | Severe Thunderstorm Warning | GRB | Forest, Langlade, Lincoln, Marathon, Marinette, Menominee and 3 more | 63 min |
| Jul 19, 8:23 PM CDT | Severe Thunderstorm Warning | GRB | Marathon, Menominee, Portage, Shawano, Waupaca, Wood | 52 min |
| Jul 19, 9:08 PM CDT | Severe Thunderstorm Warning | GRB | Brown, Door, Kewaunee, Marinette, Oconto, Shawano | 67 min |
| Jul 19, 9:10 PM CDT | Severe Thunderstorm Warning | GRB | Brown, Calumet, Kewaunee, Outagamie, Portage, Shawano and 4 more | 50 min |
| Jul 19, 9:40 PM CDT | Severe Thunderstorm Warning | GRB | Brown, Calumet, Kewaunee, Manitowoc, Outagamie, Waushara and 1 more | 50 min |
| Jul 19, 10:17 PM CDT | Severe Thunderstorm Warning | GRB | Door | 43 min |
| Jul 19, 10:32 PM CDT | Severe Thunderstorm Warning | GRB | Calumet, Manitowoc, Winnebago | 43 min |
| Jul 20, 7:59 AM CDT | Severe Thunderstorm Warning | ARX | Buffalo | 61 min |
| Jul 20, 8:43 AM CDT | Severe Thunderstorm Warning | ARX | Trempealeau | 47 min |
| Jul 20, 8:45 AM CDT | Severe Thunderstorm Warning | ARX | Jackson, La Crosse, Trempealeau | 45 min |
| Jul 20, 9:20 AM CDT | Severe Thunderstorm Warning | ARX | Buffalo | 40 min |
| Jul 20, 9:22 AM CDT | Severe Thunderstorm Warning | ARX | Clark, Jackson, Juneau, La Crosse, Monroe | 68 min |
| Jul 20, 9:38 AM CDT | Severe Thunderstorm Warning | ARX | Trempealeau | 31 min |
| Jul 20, 9:51 AM CDT | Severe Thunderstorm Warning | ARX | La Crosse | 39 min |
| Jul 20, 9:51 AM CDT | Severe Thunderstorm Warning | GRB | Marathon, Portage, Wood | 54 min |
| Jul 20, 9:58 AM CDT | Severe Thunderstorm Warning | ARX | Clark | 26 min |
| Jul 20, 10:22 AM CDT | Severe Thunderstorm Warning | ARX | Adams, Jackson, Juneau, Monroe | 53 min |
| Jul 20, 10:34 AM CDT | Severe Thunderstorm Warning | GRB | Marathon, Menominee, Outagamie, Portage, Shawano, Waupaca and 3 more | 56 min |
| Jul 20, 10:49 AM CDT | Severe Thunderstorm Warning | MKX | Green Lake, Marquette | 41 min |
| Jul 20, 10:58 AM CDT | Severe Thunderstorm Warning | MPX | Pierce | 47 min |
| Jul 20, 11:21 AM CDT | Severe Thunderstorm Warning | GRB | Brown, Calumet, Kewaunee, Manitowoc, Outagamie, Shawano and 3 more | 54 min |
| Jul 20, 11:35 AM CDT | Severe Thunderstorm Warning | GRB | Menominee, Oconto, Shawano | 40 min |
| Jul 20, 11:58 AM CDT | Severe Thunderstorm Warning | GRB | Door | 62 min |
| Jul 20, 12:10 PM CDT | Severe Thunderstorm Warning | ARX | Buffalo, Jackson, La Crosse, Trempealeau, Vernon | 80 min |
| Jul 20, 12:14 PM CDT | Severe Thunderstorm Warning | GRB | Brown, Kewaunee, Manitowoc | 31 min |
| Jul 20, 12:18 PM CDT | Severe Thunderstorm Warning | MKX | Columbia, Dodge, Fond du Lac, Milwaukee, Ozaukee, Sheboygan and 1 more | 57 min |
| Jul 20, 12:55 PM CDT | Severe Thunderstorm Warning | GRB | Door | 24 min |
| Jul 20, 1:20 PM CDT | Severe Thunderstorm Warning | ARX | Grant, Richland | 40 min |
| Jul 20, 1:31 PM CDT | Severe Thunderstorm Warning | MKX | Iowa, Lafayette, Sauk | 44 min |
| Jul 20, 2:10 PM CDT | Severe Thunderstorm Warning | MKX | Dane, Green, Iowa, Lafayette | 50 min |
| Jul 26, 8:36 PM CDT | Severe Thunderstorm Warning | DLH | Ashland, Bayfield | 54 min |
| Jul 26, 9:13 PM CDT | Severe Thunderstorm Warning | MPX | Saint Croix | 32 min |
| Jul 26, 9:14 PM CDT | Severe Thunderstorm Warning | DLH | Bayfield | 16 min |
| Jul 26, 9:32 PM CDT | Severe Thunderstorm Warning | DLH | Ashland, Bayfield | 43 min |
| Jul 26, 11:46 PM CDT | Severe Thunderstorm Warning | MPX | Dunn, Pierce, Saint Croix | 29 min |
| Jul 27, 12:10 AM CDT | Severe Thunderstorm Warning | MPX | Dunn, Eau Claire, Pepin | 50 min |
| Jul 27, 12:43 AM CDT | Severe Thunderstorm Warning | ARX | Buffalo, Trempealeau | 47 min |
| Jul 28, 5:10 PM CDT | Severe Thunderstorm Warning | MPX | Polk | 50 min |
| Jul 28, 5:55 PM CDT | Severe Thunderstorm Warning | MPX | Chippewa, Eau Claire | 35 min |
| Jul 28, 5:58 PM CDT | Severe Thunderstorm Warning | DLH | Burnett, Washburn | 47 min |
| Jul 28, 6:14 PM CDT | Severe Thunderstorm Warning | ARX | Clark | 46 min |
| Jul 28, 6:20 PM CDT | Severe Thunderstorm Warning | DLH | Burnett, Douglas | 25 min |
| Jul 28, 6:29 PM CDT | Severe Thunderstorm Warning | MPX | Barron, Rusk | 34 min |
| Jul 28, 6:33 PM CDT | Severe Thunderstorm Warning | DLH | Sawyer, Washburn | 42 min |
| Jul 28, 7:43 PM CDT | Severe Thunderstorm Warning | DLH | Bayfield, Douglas | 32 min |
| Aug 3, 3:47 PM CDT | Severe Thunderstorm Warning | GRB | Brown, Outagamie, Shawano | 43 min |
| Aug 3, 4:01 PM CDT | Severe Thunderstorm Warning | GRB | Brown | 44 min |
| Aug 3, 4:50 PM CDT | Severe Thunderstorm Warning | GRB | Calumet, Manitowoc | 40 min |
| Aug 5, 1:02 PM CDT | Severe Thunderstorm Warning | GRB | Forest, Lincoln, Oneida, Vilas | 58 min |
| Aug 5, 1:40 PM CDT | Severe Thunderstorm Warning | GRB | Florence, Forest, Langlade, Marinette, Oconto | 65 min |
| Aug 5, 1:43 PM CDT | Severe Thunderstorm Warning | MPX | Polk, Saint Croix | 47 min |
| Aug 5, 2:05 PM CDT | Severe Thunderstorm Warning | MPX | Barron, Dunn, Polk, Saint Croix | 40 min |
| Aug 5, 2:08 PM CDT | Severe Thunderstorm Warning | GRB | Langlade, Marathon, Menominee, Oconto, Shawano | 67 min |
| Aug 5, 2:40 PM CDT | Severe Thunderstorm Warning | MPX | Barron, Chippewa, Dunn, Rusk | 35 min |
| Aug 5, 2:54 PM CDT | Severe Thunderstorm Warning | GRB | Menominee, Oconto, Shawano | 51 min |
| Aug 5, 3:13 PM CDT | Severe Thunderstorm Warning | DLH | Sawyer | 32 min |
| Aug 5, 3:14 PM CDT | Severe Thunderstorm Warning | MPX | Rusk | 46 min |
| Aug 5, 3:38 PM CDT | Severe Thunderstorm Warning | DLH | Price, Sawyer | 37 min |
| Aug 5, 3:44 PM CDT | Severe Thunderstorm Warning | ARX | Taylor | 56 min |
| Aug 5, 4:17 PM CDT | Severe Thunderstorm Warning | MPX | Pepin | 28 min |
| Aug 5, 4:21 PM CDT | Severe Thunderstorm Warning | GRB | Lincoln, Marathon | 39 min |
| Aug 5, 4:24 PM CDT | Severe Thunderstorm Warning | ARX | Buffalo | 66 min |
| Aug 5, 4:43 PM CDT | Severe Thunderstorm Warning | ARX | Taylor | 28 min |
| Aug 5, 4:57 PM CDT | Severe Thunderstorm Warning | GRB | Langlade, Lincoln, Marathon | 63 min |
| Aug 5, 5:07 PM CDT | Severe Thunderstorm Warning | ARX | Buffalo, Trempealeau | 35 min |
| Aug 5, 5:28 PM CDT | Severe Thunderstorm Warning | ARX | Jackson, Trempealeau | 32 min |
| Aug 5, 5:35 PM CDT | Severe Thunderstorm Warning | GRB | Langlade, Marathon, Menominee, Shawano | 55 min |
| Aug 5, 5:39 PM CDT | Severe Thunderstorm Warning | MPX | Eau Claire | 21 min |
| Aug 5, 5:48 PM CDT | Severe Thunderstorm Warning | ARX | Clark | 42 min |
| Aug 5, 6:11 PM CDT | Severe Thunderstorm Warning | GRB | Portage, Wood | 64 min |
| Aug 5, 6:21 PM CDT | Severe Thunderstorm Warning | GRB | Menominee, Oconto, Shawano, Waupaca | 54 min |
| Aug 5, 7:30 PM CDT | Severe Thunderstorm Warning | MKX | Green Lake, Marquette | 30 min |
| Aug 5, 7:57 PM CDT | Severe Thunderstorm Warning | MKX | Columbia, Dodge, Fond du Lac, Green Lake, Marquette | 33 min |
| Aug 5, 8:07 PM CDT | Severe Thunderstorm Warning | MKX | Columbia, Sauk | 38 min |
| Aug 5, 8:33 PM CDT | Severe Thunderstorm Warning | MKX | Columbia, Sauk | 27 min |
| Aug 5, 8:59 PM CDT | Severe Thunderstorm Warning | ARX | Crawford, Grant, Richland | 46 min |
| Aug 5, 10:03 PM CDT | Severe Thunderstorm Warning | MKX | Iowa, Lafayette | 42 min |
| Aug 7, 12:38 PM CDT | Severe Thunderstorm Warning | GRB | Forest, Marinette | 67 min |
| Aug 7, 2:09 PM CDT | Severe Thunderstorm Warning | GRB | Forest, Langlade, Oconto | 51 min |
| Aug 7, 2:31 PM CDT | Severe Thunderstorm Warning | ARX | Jackson, Monroe | 37 min |
| Aug 7, 3:01 PM CDT | Severe Thunderstorm Warning | DLH | Ashland, Bayfield, Iron | 44 min |
| Aug 7, 3:12 PM CDT | Severe Thunderstorm Warning | GRB | Marinette, Oconto | 42 min |
| Aug 7, 3:43 PM CDT | Severe Thunderstorm Warning | DLH | Ashland, Iron, Price | 47 min |
| Aug 7, 3:51 PM CDT | Severe Thunderstorm Warning | GRB | Marinette, Oconto | 24 min |
| Aug 7, 4:10 PM CDT | Severe Thunderstorm Warning | GRB | Langlade, Oconto | 30 min |
| Aug 7, 4:17 PM CDT | Severe Thunderstorm Warning | GRB | Door, Kewaunee | 43 min |
| Aug 7, 4:51 PM CDT | Severe Thunderstorm Warning | GRB | Brown, Outagamie, Waupaca | 39 min |
| Aug 7, 4:58 PM CDT | Severe Thunderstorm Warning | GRB | Door, Kewaunee | 47 min |
| Aug 7, 5:03 PM CDT | Severe Thunderstorm Warning | GRB | Outagamie, Shawano, Waupaca | 42 min |
| Aug 7, 5:23 PM CDT | Severe Thunderstorm Warning | GRB | Brown, Oconto, Outagamie, Shawano | 52 min |
| Aug 7, 5:31 PM CDT | Severe Thunderstorm Warning | ARX | Clark | 44 min |
| Aug 7, 5:48 PM CDT | Severe Thunderstorm Warning | GRB | Brown, Door, Kewaunee | 57 min |
| Aug 7, 6:23 PM CDT | Severe Thunderstorm Warning | GRB | Marathon, Portage, Waupaca, Wood | 52 min |
| Aug 7, 7:22 PM CDT | Severe Thunderstorm Warning | GRB | Brown, Kewaunee, Manitowoc, Outagamie | 38 min |
| Aug 7, 7:33 PM CDT | Severe Thunderstorm Warning | MKX | Fond du Lac, Green Lake, Marquette | 42 min |
| Aug 7, 7:42 PM CDT | Severe Thunderstorm Warning | ARX | Adams | 48 min |
| Aug 7, 7:47 PM CDT | Severe Thunderstorm Warning | GRB | Waushara | 58 min |
| Aug 7, 8:01 PM CDT | Severe Thunderstorm Warning | GRB | Calumet, Manitowoc, Winnebago | 59 min |
| Aug 7, 8:08 PM CDT | Severe Thunderstorm Warning | MKX | Fond du Lac, Green Lake, Sheboygan | 52 min |
| Aug 7, 8:18 PM CDT | Severe Thunderstorm Warning | MKX | Green Lake, Marquette | 42 min |
| Aug 7, 8:22 PM CDT | Severe Thunderstorm Warning | ARX | Adams | 38 min |
| Aug 7, 8:50 PM CDT | Severe Thunderstorm Warning | MKX | Dodge, Fond du Lac, Green Lake, Ozaukee, Sheboygan, Washington | 25 min |
| Aug 7, 9:18 PM CDT | Severe Thunderstorm Warning | MKX | Columbia, Dodge, Fond du Lac, Ozaukee, Sheboygan, Washington | 42 min |
| Aug 7, 10:34 PM CDT | Severe Thunderstorm Warning | MKX | Jefferson | 41 min |
| Aug 13, 7:26 PM CDT | Severe Thunderstorm Warning | ARX | Buffalo | 49 min |
| Aug 18, 5:39 AM CDT | Severe Thunderstorm Warning | MKX | Dane, Green, Iowa, Lafayette | 36 min |
| Aug 18, 8:13 AM CDT | Severe Thunderstorm Warning | MKX | Kenosha, Racine | 14 min |
| Aug 27, 1:33 PM CDT | Severe Thunderstorm Warning | MPX | Polk, Saint Croix | 21 min |
| Aug 27, 2:40 PM CDT | Severe Thunderstorm Warning | GRB | Brown, Kewaunee, Manitowoc | 31 min |
| Aug 29, 6:56 AM CDT | Severe Thunderstorm Warning | DLH | Douglas | 34 min |
| Aug 29, 2:18 PM CDT | Severe Thunderstorm Warning | MKX | Sheboygan | 27 min |
| Aug 29, 2:22 PM CDT | Severe Thunderstorm Warning | GRB | Manitowoc | 23 min |
| Aug 29, 2:51 PM CDT | Severe Thunderstorm Warning | MKX | Ozaukee, Sheboygan | 24 min |
| Sep 2, 10:22 PM CDT | Severe Thunderstorm Warning | MPX | Saint Croix | 53 min |
| Sep 3, 12:06 AM CDT | Severe Thunderstorm Warning | ARX | Clark, Taylor | 39 min |
| Sep 3, 1:17 AM CDT | Severe Thunderstorm Warning | GRB | Marathon, Portage, Wood | 43 min |
| Sep 3, 1:29 AM CDT | Severe Thunderstorm Warning | GRB | Shawano, Waupaca | 61 min |
| Sep 3, 2:18 AM CDT | Severe Thunderstorm Warning | ARX | Crawford | 42 min |
| Sep 3, 5:13 AM CDT | Severe Thunderstorm Warning | MKX | Lafayette | 32 min |
| Sep 5, 12:56 PM CDT | Severe Thunderstorm Warning | DLH | Douglas, Sawyer, Washburn | 34 min |
| Sep 5, 1:47 PM CDT | Severe Thunderstorm Warning | DLH | Sawyer | 28 min |
| Sep 5, 2:13 PM CDT | Severe Thunderstorm Warning | DLH | Price, Sawyer | 32 min |
| Sep 5, 2:18 PM CDT | Severe Thunderstorm Warning | MPX | Rusk | 27 min |
| Sep 5, 4:58 PM CDT | Severe Thunderstorm Warning | GRB | Forest, Oneida | 32 min |
| Sep 10, 1:50 AM CDT | Severe Thunderstorm Warning | MKX | Green | 25 min |
| Sep 11, 2:57 PM CDT | Severe Thunderstorm Warning | MKX | Fond du Lac, Sheboygan | 33 min |
| Sep 11, 9:24 PM CDT | Severe Thunderstorm Warning | MKX | Kenosha, Walworth | 23 min |
| Sep 12, 6:16 PM CDT | Severe Thunderstorm Warning | ARX | Crawford | 27 min |
| Sep 12, 7:25 PM CDT | Severe Thunderstorm Warning | MKX | Iowa, Sauk | 35 min |
| Sep 12, 7:36 PM CDT | Severe Thunderstorm Warning | MKX | Lafayette | 39 min |
| Sep 12, 8:14 PM CDT | Severe Thunderstorm Warning | MKX | Dane, Green, Iowa, Lafayette | 46 min |
| Sep 24, 7:00 PM CDT | Severe Thunderstorm Warning | DLH | Ashland, Bayfield, Sawyer, Washburn | 45 min |
| Sep 24, 7:02 PM CDT | Severe Thunderstorm Warning | DLH | Ashland, Bayfield | 43 min |
| Sep 24, 7:14 PM CDT | Severe Thunderstorm Warning | DLH | Ashland, Iron | 46 min |
| Sep 24, 7:35 PM CDT | Severe Thunderstorm Warning | DLH | Ashland, Price, Sawyer | 40 min |
| Sep 24, 7:38 PM CDT | Severe Thunderstorm Warning | DLH | Ashland, Iron | 52 min |
| Sep 24, 8:10 PM CDT | Severe Thunderstorm Warning | DLH | Price, Sawyer | 35 min |
| Sep 24, 8:11 PM CDT | Severe Thunderstorm Warning | ARX | Buffalo | 39 min |
| Sep 24, 8:23 PM CDT | Severe Thunderstorm Warning | ARX | Buffalo | 44 min |
| Sep 24, 8:31 PM CDT | Severe Thunderstorm Warning | DLH | Ashland, Iron, Price, Sawyer | 43 min |
| Sep 24, 8:35 PM CDT | Severe Thunderstorm Warning | GRB | Vilas | 85 min |
| Sep 24, 8:42 PM CDT | Severe Thunderstorm Warning | ARX | Trempealeau | 33 min |
| Sep 24, 8:47 PM CDT | Severe Thunderstorm Warning | ARX | Clark, Taylor | 30 min |
| Sep 24, 8:52 PM CDT | Severe Thunderstorm Warning | GRB | Oneida | 68 min |
| Sep 24, 8:54 PM CDT | Severe Thunderstorm Warning | ARX | Trempealeau | 21 min |
| Sep 24, 9:06 PM CDT | Severe Thunderstorm Warning | ARX | Clark, Jackson | 54 min |
| Sep 24, 9:21 PM CDT | Severe Thunderstorm Warning | GRB | Marathon, Portage, Wood | 24 min |
| Sep 24, 9:39 PM CDT | Severe Thunderstorm Warning | GRB | Lincoln, Marathon, Wood | 51 min |
| Sep 24, 10:31 PM CDT | Severe Thunderstorm Warning | GRB | Langlade, Lincoln, Oneida | 44 min |
| Sep 30, 12:46 PM CDT | Severe Thunderstorm Warning | GRB | Marinette, Oconto | 44 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Sawyer County19
- Oconto County18
- Shawano County17
- Price County14
- Buffalo County13
- Trempealeau County13
- Clark County13
- Brown County13
- Marathon County13
- Lafayette County12
- Sauk County12
- Columbia County12
- Jackson County12
- Ashland County12
- Outagamie County12
- Dane County11
- Manitowoc County11
- Portage County11
- Waupaca County11
- Kewaunee County11
- Douglas County10
- Langlade County10
- Wood County10
- Iowa County9
- Menominee County9
- Pierce County9
- Saint Croix County9
- La Crosse County9
- Washburn County9
- Green Lake County9
- Burnett County9
- Polk County9
- Lincoln County9
- Grant County8
- Marinette County8
- Winnebago County8
- Fond du Lac County8
- Sheboygan County8
- Forest County8
- Door County8
32 more counties
- Green County7
- Barron County7
- Monroe County7
- Marquette County7
- Waushara County7
- Dodge County7
- Calumet County7
- Rusk County7
- Taylor County7
- Oneida County7
- Bayfield County7
- Rock County6
- Crawford County6
- Kenosha County6
- Walworth County6
- Ozaukee County6
- Dunn County6
- Iron County6
- Jefferson County5
- Vernon County5
- Eau Claire County5
- Chippewa County5
- Waukesha County5
- Washington County5
- Richland County5
- Racine County4
- Pepin County4
- Milwaukee County3
- Vilas County3
- Adams County3
- Juneau County2
- Florence County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20182020
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.