Alert archive / Iowa / Severe Thunderstorm Warnings
Severe Thunderstorm Warnings in Iowa, 1991
246 severe thunderstorm warnings in 1991. 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 1991. Tap one for its archive.
- Severe Thunderstorm Warnings
- 246
- Busiest month
- May81 severe thunderstorm warnings
- Busiest day
- May 14, 199126 severe thunderstorm warnings
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 |
|---|---|---|---|---|
| Mar 18, 6:50 PM CST | Severe Thunderstorm Warning | DMX | Adams, Taylor | 40 min |
| Mar 22, 2:08 PM CST | Severe Thunderstorm Warning | DMX | Cass | 67 min |
| Mar 22, 3:10 PM CST | Severe Thunderstorm Warning | DMX | Guthrie | 50 min |
| Mar 22, 4:24 PM CST | Severe Thunderstorm Warning | DMX | Story | 36 min |
| Mar 22, 5:15 PM CST | Severe Thunderstorm Warning | DMX | Appanoose, Davis | 27 min |
| Mar 22, 6:11 PM CST | Severe Thunderstorm Warning | DMX | Black Hawk | 49 min |
| Mar 22, 7:14 PM CST | Severe Thunderstorm Warning | DVN | Cedar, Muscatine | 41 min |
| Mar 22, 8:25 PM CST | Severe Thunderstorm Warning | DVN | Clinton | 45 min |
| Mar 26, 10:15 PM CST | Severe Thunderstorm Warning | DVN | Des Moines, Henry, Lee | 30 min |
| Mar 26, 10:49 PM CST | Severe Thunderstorm Warning | OAX | Harrison | 56 min |
| Mar 26, 11:09 PM CST | Severe Thunderstorm Warning | OAX | Pottawattamie | 66 min |
| Mar 26, 11:46 PM CST | Severe Thunderstorm Warning | DMX | Calhoun, Carroll | 44 min |
| Mar 27, 12:10 AM CST | Severe Thunderstorm Warning | DMX | Tama | 28 min |
| Mar 27, 12:34 AM CST | Severe Thunderstorm Warning | DMX | Marshall | 34 min |
| Mar 27, 12:06 PM CST | Severe Thunderstorm Warning | DVN | Dubuque, Jackson | 39 min |
| Mar 27, 12:51 PM CST | Severe Thunderstorm Warning | DVN | Clinton | 69 min |
| Apr 8, 8:55 AM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 65 min |
| Apr 8, 11:18 AM CDT | Severe Thunderstorm Warning | DMX | Audubon, Carroll | 42 min |
| Apr 8, 2:41 PM CDT | Severe Thunderstorm Warning | DMX | Buchanan | 49 min |
| Apr 8, 2:56 PM CDT | Severe Thunderstorm Warning | DVN | Clayton, Delaware | 64 min |
| Apr 8, 3:20 PM CDT | Severe Thunderstorm Warning | DVN | Jackson, Jones | 40 min |
| Apr 8, 3:43 PM CDT | Severe Thunderstorm Warning | DVN | Jackson | 62 min |
| Apr 8, 6:06 PM CDT | Severe Thunderstorm Warning | DMX | Marshall, Story | 54 min |
| Apr 8, 6:09 PM CDT | Severe Thunderstorm Warning | DMX | Polk | 36 min |
| Apr 8, 6:26 PM CDT | Severe Thunderstorm Warning | DMX | Marshall, Story | 34 min |
| Apr 8, 6:45 PM CDT | Severe Thunderstorm Warning | DMX | Marion | 30 min |
| Apr 8, 10:59 PM CDT | Severe Thunderstorm Warning | DMX | Jefferson, Washington | 46 min |
| Apr 8, 11:15 PM CDT | Severe Thunderstorm Warning | DVN | Louisa, Muscatine | 45 min |
| Apr 12, 3:30 AM CDT | Severe Thunderstorm Warning | DMX | Audubon, Carroll | 24 min |
| Apr 12, 4:07 AM CDT | Severe Thunderstorm Warning | DMX | Boone, Dallas | 53 min |
| Apr 12, 10:57 AM CDT | Severe Thunderstorm Warning | DMX | Jasper | 33 min |
| Apr 17, 2:40 PM CDT | Severe Thunderstorm Warning | DMX | Lucas, Monroe | 50 min |
| Apr 17, 5:17 PM CDT | Severe Thunderstorm Warning | DMX | Dallas, Guthrie | 38 min |
| Apr 17, 5:37 PM CDT | Severe Thunderstorm Warning | DMX | Adair | 38 min |
| Apr 17, 6:15 PM CDT | Severe Thunderstorm Warning | DMX | Adair | 31 min |
| Apr 26, 6:23 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 52 min |
| Apr 26, 6:39 PM CDT | Severe Thunderstorm Warning | DMX | Carroll, Crawford | 35 min |
| Apr 26, 7:20 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Pottawattamie | 70 min |
| Apr 26, 7:43 PM CDT | Severe Thunderstorm Warning | DMX | Crawford | 32 min |
| Apr 26, 8:36 PM CDT | Severe Thunderstorm Warning | DMX | Buena Vista | 29 min |
| Apr 26, 8:55 PM CDT | Severe Thunderstorm Warning | DMX | Ringgold | 30 min |
| Apr 26, 9:19 PM CDT | Severe Thunderstorm Warning | DMX | Decatur | 35 min |
| Apr 26, 9:19 PM CDT | Severe Thunderstorm Warning | DMX | Clarke | 41 min |
| Apr 26, 9:46 PM CDT | Severe Thunderstorm Warning | DMX | Polk, Warren | 44 min |
| Apr 26, 10:59 PM CDT | Severe Thunderstorm Warning | DMX | Lucas, Wayne | 31 min |
| Apr 27, 12:02 AM CDT | Severe Thunderstorm Warning | DMX | Mahaska, Marion, Monroe | 28 min |
| Apr 27, 1:30 AM CDT | Severe Thunderstorm Warning | DMX | Mahaska | 45 min |
| Apr 28, 11:30 AM CDT | Severe Thunderstorm Warning | DVN | Dubuque, Jackson, Jones | 60 min |
| Apr 28, 5:30 PM CDT | Severe Thunderstorm Warning | DVN | Dubuque, Jackson, Jones | 44 min |
| Apr 28, 6:43 PM CDT | Severe Thunderstorm Warning | DVN | Dubuque | 52 min |
| Apr 28, 7:04 PM CDT | Severe Thunderstorm Warning | DVN | Dubuque | 41 min |
| Apr 28, 7:05 PM CDT | Severe Thunderstorm Warning | DMX | Decatur | 40 min |
| Apr 28, 8:09 PM CDT | Severe Thunderstorm Warning | DMX | Decatur, Wayne | 51 min |
| Apr 28, 9:30 PM CDT | Severe Thunderstorm Warning | DVN | Delaware | 60 min |
| Apr 28, 9:47 PM CDT | Severe Thunderstorm Warning | DVN | Dubuque | 58 min |
| Apr 28, 10:54 PM CDT | Severe Thunderstorm Warning | DVN | Delaware | 36 min |
| Apr 29, 1:14 PM CDT | Severe Thunderstorm Warning | OAX | Harrison | 61 min |
| Apr 29, 1:17 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 58 min |
| Apr 29, 2:31 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Pottawattamie, Shelby | 59 min |
| Apr 29, 2:31 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Pottawattamie, Shelby | 39 min |
| Apr 29, 2:40 PM CDT | Severe Thunderstorm Warning | DMX | Sac | 50 min |
| Apr 29, 3:20 PM CDT | Severe Thunderstorm Warning | DMX | Worth | 40 min |
| Apr 29, 3:20 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo | 26 min |
| May 4, 8:17 PM CDT | Severe Thunderstorm Warning | DMX | Ringgold, Union | 41 min |
| May 12, 10:24 PM CDT | Severe Thunderstorm Warning | FSD | Woodbury | 16 min |
| May 13, 12:46 AM CDT | Severe Thunderstorm Warning | DMX | Kossuth | 29 min |
| May 13, 1:12 AM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie, Shelby | 43 min |
| May 13, 4:04 AM CDT | Severe Thunderstorm Warning | DMX | Mahaska, Marion, Monroe | 20 min |
| May 13, 4:24 AM CDT | Severe Thunderstorm Warning | DMX | Winneshiek | 36 min |
| May 13, 6:26 AM CDT | Severe Thunderstorm Warning | DVN | Clayton | 34 min |
| May 14, 6:26 AM CDT | Severe Thunderstorm Warning | DVN | Clayton | 34 min |
| May 14, 8:33 AM CDT | Severe Thunderstorm Warning | DMX | Lucas | 42 min |
| May 14, 8:44 AM CDT | Severe Thunderstorm Warning | DMX | Jasper, Polk, Story | 46 min |
| May 14, 9:03 AM CDT | Severe Thunderstorm Warning | DMX | Boone | 42 min |
| May 14, 9:15 AM CDT | Severe Thunderstorm Warning | DMX | Lucas | 45 min |
| May 14, 9:43 AM CDT | Severe Thunderstorm Warning | DMX | Marshall | 47 min |
| May 14, 10:00 AM CDT | Severe Thunderstorm Warning | DMX | Wayne | 45 min |
| May 14, 10:36 AM CDT | Severe Thunderstorm Warning | DMX | Grundy | 69 min |
| May 14, 10:50 AM CDT | Severe Thunderstorm Warning | DMX | Wayne | 40 min |
| May 14, 11:05 AM CDT | Severe Thunderstorm Warning | DMX | Appanoose | 40 min |
| May 14, 11:17 AM CDT | Severe Thunderstorm Warning | DMX | Buchanan | 58 min |
| May 14, 11:26 AM CDT | Severe Thunderstorm Warning | DMX | Black Hawk | 64 min |
| May 14, 12:04 PM CDT | Severe Thunderstorm Warning | DMX | Fayette | 38 min |
| May 14, 12:34 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk | 41 min |
| May 14, 12:43 PM CDT | Severe Thunderstorm Warning | DMX | Benton | 47 min |
| May 14, 1:01 PM CDT | Severe Thunderstorm Warning | DMX | Linn | 44 min |
| May 14, 1:12 PM CDT | Severe Thunderstorm Warning | DMX | Buchanan | 33 min |
| May 14, 1:30 PM CDT | Severe Thunderstorm Warning | DMX | Linn | 45 min |
| May 14, 1:52 PM CDT | Severe Thunderstorm Warning | DMX | Benton | 21 min |
| May 14, 2:24 PM CDT | Severe Thunderstorm Warning | DMX | Benton | 66 min |
| May 14, 3:23 PM CDT | Severe Thunderstorm Warning | DVN | Muscatine | 67 min |
| May 14, 3:37 PM CDT | Severe Thunderstorm Warning | DVN | Scott | 68 min |
| May 14, 5:05 PM CDT | Severe Thunderstorm Warning | DMX | Wright | 40 min |
| May 14, 5:22 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Hancock | 68 min |
| May 14, 5:49 PM CDT | Severe Thunderstorm Warning | DMX | Wright | 41 min |
| May 14, 6:42 PM CDT | Severe Thunderstorm Warning | DMX | Polk, Warren | 63 min |
| May 14, 7:10 PM CDT | Severe Thunderstorm Warning | DMX | Marion | 42 min |
| May 14, 8:07 PM CDT | Severe Thunderstorm Warning | DMX | Dallas | 33 min |
| May 15, 3:23 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marshall | 22 min |
| May 16, 7:33 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 42 min |
| May 16, 8:36 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 39 min |
| May 17, 1:54 PM CDT | Severe Thunderstorm Warning | DMX | Wright | 36 min |
| May 17, 2:35 PM CDT | Severe Thunderstorm Warning | DMX | Wright | 40 min |
| May 17, 3:01 PM CDT | Severe Thunderstorm Warning | DMX | Greene | 44 min |
| May 17, 3:17 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk | 58 min |
| May 17, 3:46 PM CDT | Severe Thunderstorm Warning | DVN | Delaware | 59 min |
| May 17, 4:16 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Davis | 44 min |
| May 17, 4:22 PM CDT | Severe Thunderstorm Warning | DMX | Floyd | 38 min |
| May 17, 4:22 PM CDT | Severe Thunderstorm Warning | DMX | Butler, Grundy | 68 min |
| May 17, 5:14 PM CDT | Severe Thunderstorm Warning | DMX | Benton, Iowa | 46 min |
| May 17, 5:27 PM CDT | Severe Thunderstorm Warning | DMX | Van Buren | 48 min |
| May 17, 5:36 PM CDT | Severe Thunderstorm Warning | DMX | Iowa, Johnson, Linn | 69 min |
| May 17, 6:13 PM CDT | Severe Thunderstorm Warning | DVN | Lee | 62 min |
| May 25, 8:33 PM CDT | Severe Thunderstorm Warning | OAX | Page | 24 min |
| May 25, 9:26 PM CDT | Severe Thunderstorm Warning | DMX | Taylor | 44 min |
| May 25, 10:53 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Union | 67 min |
| May 28, 12:04 AM CDT | Severe Thunderstorm Warning | DMX | Carroll | 41 min |
| May 28, 12:35 AM CDT | Severe Thunderstorm Warning | FSD | Monona | 55 min |
| May 28, 12:52 AM CDT | Severe Thunderstorm Warning | DMX | Crawford | 44 min |
| May 28, 3:26 AM CDT | Severe Thunderstorm Warning | DMX | Webster | 49 min |
| May 28, 3:58 AM CDT | Severe Thunderstorm Warning | DMX | Hamilton, Wright | 47 min |
| May 28, 4:18 AM CDT | Severe Thunderstorm Warning | DMX | Franklin | 57 min |
| May 28, 4:29 AM CDT | Severe Thunderstorm Warning | DMX | Hardin | 46 min |
| May 28, 5:09 AM CDT | Severe Thunderstorm Warning | DMX | Butler, Grundy | 51 min |
| May 28, 5:30 AM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Bremer | 30 min |
| May 29, 1:19 AM CDT | Severe Thunderstorm Warning | FSD | Woodbury | 56 min |
| May 29, 1:19 AM CDT | Severe Thunderstorm Warning | FSD | Plymouth | 56 min |
| May 29, 1:33 AM CDT | Severe Thunderstorm Warning | OAX | Harrison | 27 min |
| May 29, 2:00 AM CDT | Severe Thunderstorm Warning | FSD | Cherokee | 60 min |
| May 29, 2:26 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 49 min |
| May 29, 2:50 PM CDT | Severe Thunderstorm Warning | OAX | Harrison | 25 min |
| May 29, 3:58 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 62 min |
| May 29, 9:02 PM CDT | Severe Thunderstorm Warning | DMX | Linn | 28 min |
| May 29, 9:22 PM CDT | Severe Thunderstorm Warning | DVN | Jones | 48 min |
| May 29, 10:56 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 64 min |
| May 31, 5:06 AM CDT | Severe Thunderstorm Warning | DMX | Hamilton, Hardin | 54 min |
| May 31, 5:34 AM CDT | Severe Thunderstorm Warning | DMX | Franklin | 56 min |
| May 31, 8:22 AM CDT | Severe Thunderstorm Warning | DMX | Bremer, Butler | 68 min |
| May 31, 9:23 AM CDT | Severe Thunderstorm Warning | DMX | Buchanan | 67 min |
| May 31, 10:39 AM CDT | Severe Thunderstorm Warning | DVN | Jones | 66 min |
| May 31, 10:57 AM CDT | Severe Thunderstorm Warning | DVN | Dubuque | 63 min |
| May 31, 10:59 AM CDT | Severe Thunderstorm Warning | DMX | Marshall | 31 min |
| May 31, 11:18 AM CDT | Severe Thunderstorm Warning | DVN | Jones | 42 min |
| May 31, 12:36 PM CDT | Severe Thunderstorm Warning | DMX | Polk | 39 min |
| Jun 1, 1:45 AM CDT | Severe Thunderstorm Warning | FSD | Woodbury | 60 min |
| Jun 1, 2:21 AM CDT | Severe Thunderstorm Warning | DMX | Dallas, Madison | 16 hr |
| Jun 1, 3:46 PM CDT | Severe Thunderstorm Warning | OAX | Mills, Pottawattamie | 59 min |
| Jun 1, 4:16 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 59 min |
| Jun 1, 4:42 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 63 min |
| Jun 1, 5:00 PM CDT | Severe Thunderstorm Warning | OAX | Mills, Pottawattamie | 60 min |
| Jun 1, 5:05 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie, Shelby | 55 min |
| Jun 1, 5:16 PM CDT | Severe Thunderstorm Warning | OAX | Montgomery | 59 min |
| Jun 13, 12:14 PM CDT | Severe Thunderstorm Warning | OAX | Shelby | 46 min |
| Jun 14, 1:09 AM CDT | Severe Thunderstorm Warning | DMX | Cass | 51 min |
| Jun 14, 1:20 AM CDT | Severe Thunderstorm Warning | DMX | Guthrie | 40 min |
| Jun 14, 4:49 PM CDT | Severe Thunderstorm Warning | DMX | Fayette | 41 min |
| Jun 14, 5:12 PM CDT | Severe Thunderstorm Warning | DMX | Allamakee | 33 min |
| Jun 14, 5:13 PM CDT | Severe Thunderstorm Warning | DVN | Clayton | 47 min |
| Jun 14, 6:02 PM CDT | Severe Thunderstorm Warning | DVN | Clayton | 28 min |
| Jun 14, 7:24 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 66 min |
| Jun 14, 7:37 PM CDT | Severe Thunderstorm Warning | DMX | Chickasaw | 33 min |
| Jun 14, 7:37 PM CDT | Severe Thunderstorm Warning | DMX | Bremer | 68 min |
| Jun 14, 7:52 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth | 38 min |
| Jun 14, 8:06 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Shelby | 69 min |
| Jun 14, 8:07 PM CDT | Severe Thunderstorm Warning | DMX | Bremer | 68 min |
| Jun 14, 8:43 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo | 47 min |
| Jun 14, 9:00 PM CDT | Severe Thunderstorm Warning | OAX | Mills, Page | 60 min |
| Jun 14, 9:00 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 60 min |
| Jun 14, 9:25 PM CDT | Severe Thunderstorm Warning | DMX | Buena Vista | 50 min |
| Jun 14, 9:37 PM CDT | Severe Thunderstorm Warning | DVN | Delaware | 53 min |
| Jun 14, 9:47 PM CDT | Severe Thunderstorm Warning | DMX | Sac | 43 min |
| Jun 14, 10:04 PM CDT | Severe Thunderstorm Warning | DMX | Pocahontas | 41 min |
| Jun 14, 10:13 PM CDT | Severe Thunderstorm Warning | DMX | Dallas, Polk | 47 min |
| Jun 14, 10:15 PM CDT | Severe Thunderstorm Warning | DMX | Dallas, Guthrie | 24 min |
| Jun 14, 10:41 PM CDT | Severe Thunderstorm Warning | DMX | Story | 44 min |
| Jun 15, 12:09 AM CDT | Severe Thunderstorm Warning | OAX | Montgomery | 16 min |
| Jun 15, 2:59 AM CDT | Severe Thunderstorm Warning | OAX | Harrison | 46 min |
| Jun 18, 7:45 PM CDT | Severe Thunderstorm Warning | DMX | Howard | 60 min |
| Jun 18, 8:47 PM CDT | Severe Thunderstorm Warning | DMX | Chickasaw, Fayette, Howard, Winneshiek | 58 min |
| Jun 21, 2:24 PM CDT | Severe Thunderstorm Warning | DVN | Clayton | 36 min |
| Jul 6, 5:26 AM CDT | Severe Thunderstorm Warning | DVN | Mahaska, Poweshiek | 49 min |
| Jul 6, 5:26 AM CDT | Severe Thunderstorm Warning | DVN | Jones | 49 min |
| Jul 7, 3:10 AM CDT | Severe Thunderstorm Warning | DVN | Clayton, Delaware | 35 min |
| Jul 7, 3:35 AM CDT | Severe Thunderstorm Warning | DVN | Dubuque | 25 min |
| Jul 7, 9:09 AM CDT | Severe Thunderstorm Warning | FSD | Plymouth | 51 min |
| Jul 7, 9:33 AM CDT | Severe Thunderstorm Warning | FSD | Sioux | 27 min |
| Jul 7, 9:42 AM CDT | Severe Thunderstorm Warning | FSD | Cherokee, O'Brien | 43 min |
| Jul 7, 10:10 AM CDT | Severe Thunderstorm Warning | DMX | Clay, Dickinson | 50 min |
| Jul 7, 10:35 AM CDT | Severe Thunderstorm Warning | DMX | Buena Vista, Palo Alto, Pocahontas | 40 min |
| Jul 7, 10:35 AM CDT | Severe Thunderstorm Warning | DMX | Emmet | 40 min |
| Jul 7, 10:50 AM CDT | Severe Thunderstorm Warning | DMX | Kossuth | 40 min |
| Jul 7, 11:08 AM CDT | Severe Thunderstorm Warning | DMX | Hancock, Winnebago | 44 min |
| Jul 7, 11:40 AM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo | 35 min |
| Jul 7, 11:45 AM CDT | Severe Thunderstorm Warning | DMX | Franklin | 24 min |
| Jul 7, 11:57 AM CDT | Severe Thunderstorm Warning | DMX | Butler, Floyd, Mitchell | 33 min |
| Jul 7, 12:29 PM CDT | Severe Thunderstorm Warning | DMX | Bremer, Chickasaw | 31 min |
| Jul 7, 12:29 PM CDT | Severe Thunderstorm Warning | DMX | Howard | 31 min |
| Jul 7, 12:53 PM CDT | Severe Thunderstorm Warning | DMX | Allamakee, Fayette | 37 min |
| Jul 7, 1:13 PM CDT | Severe Thunderstorm Warning | DMX | Allamakee | 32 min |
| Jul 7, 1:15 PM CDT | Severe Thunderstorm Warning | DVN | Clayton | 45 min |
| Jul 20, 12:33 AM CDT | Severe Thunderstorm Warning | DMX | Clay | 42 min |
| Jul 20, 1:20 AM CDT | Severe Thunderstorm Warning | DMX | Clay | 29 min |
| Jul 20, 10:28 PM CDT | Severe Thunderstorm Warning | FSD | Osceola | 32 min |
| Jul 21, 11:16 PM CDT | Severe Thunderstorm Warning | FSD | O'Brien | 59 min |
| Jul 21, 11:19 PM CDT | Severe Thunderstorm Warning | DMX | Clay | 41 min |
| Jul 22, 4:19 PM CDT | Severe Thunderstorm Warning | DMX | Guthrie | 26 min |
| Jul 22, 6:05 PM CDT | Severe Thunderstorm Warning | OAX | Fremont | 40 min |
| Aug 7, 5:02 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth | 28 min |
| Aug 7, 5:08 PM CDT | Severe Thunderstorm Warning | FSD | Sioux | 52 min |
| Aug 7, 5:38 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth | 67 min |
| Aug 7, 7:12 PM CDT | Severe Thunderstorm Warning | DMX | Buena Vista, Clay | 48 min |
| Aug 7, 7:44 PM CDT | Severe Thunderstorm Warning | DMX | Pocahontas | 46 min |
| Aug 7, 7:59 PM CDT | Severe Thunderstorm Warning | DMX | Buena Vista | 46 min |
| Aug 11, 6:38 PM CDT | Severe Thunderstorm Warning | DMX | Grundy | 35 min |
| Aug 23, 12:59 AM CDT | Severe Thunderstorm Warning | DMX | Clay, Palo Alto | 27 min |
| Aug 23, 2:38 AM CDT | Severe Thunderstorm Warning | DMX | Franklin | 67 min |
| Sep 9, 4:28 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Polk | 47 min |
| Sep 9, 5:08 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marion, Polk, Warren | 37 min |
| Sep 9, 6:14 PM CDT | Severe Thunderstorm Warning | DMX | Allamakee | 31 min |
| Sep 9, 6:24 PM CDT | Severe Thunderstorm Warning | DVN | Delaware | 101 min |
| Sep 9, 6:24 PM CDT | Severe Thunderstorm Warning | DVN | Clayton | 66 min |
| Sep 9, 7:23 PM CDT | Severe Thunderstorm Warning | DVN | Scott | 52 min |
| Sep 9, 8:57 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Lee | 28 min |
| Sep 11, 7:41 PM CDT | Severe Thunderstorm Warning | DMX | Carroll, Greene | 34 min |
| Sep 11, 8:08 PM CDT | Severe Thunderstorm Warning | DMX | Hamilton | 52 min |
| Sep 11, 8:08 PM CDT | Severe Thunderstorm Warning | DMX | Webster | 45 min |
| Sep 11, 8:22 PM CDT | Severe Thunderstorm Warning | DMX | Greene | 31 min |
| Sep 11, 8:22 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Story | 53 min |
| Sep 12, 3:03 PM CDT | Severe Thunderstorm Warning | DMX | Marshall, Story | 29 min |
| Sep 12, 3:20 PM CDT | Severe Thunderstorm Warning | DMX | Polk | 25 min |
| Sep 12, 3:33 PM CDT | Severe Thunderstorm Warning | DMX | Marshall, Tama | 42 min |
| Sep 12, 3:44 PM CDT | Severe Thunderstorm Warning | DMX | Jasper | 31 min |
| Sep 12, 3:53 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk | 61 min |
| Sep 12, 3:53 PM CDT | Severe Thunderstorm Warning | DMX | Grundy | 31 min |
| Sep 12, 4:41 PM CDT | Severe Thunderstorm Warning | DMX | Linn | 49 min |
| Sep 12, 4:57 PM CDT | Severe Thunderstorm Warning | DVN | Jones | 33 min |
| Sep 12, 5:03 PM CDT | Severe Thunderstorm Warning | DVN | Cedar | 57 min |
| Sep 12, 5:07 PM CDT | Severe Thunderstorm Warning | DVN | Delaware | 25 min |
| Sep 12, 5:42 PM CDT | Severe Thunderstorm Warning | DVN | Jackson | 38 min |
| Sep 12, 6:15 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Scott | 40 min |
| Oct 23, 4:54 PM CDT | Severe Thunderstorm Warning | DVN | Louisa | 51 min |
| Oct 23, 4:54 PM CDT | Severe Thunderstorm Warning | DVN | Muscatine | 66 min |
| Oct 23, 7:54 PM CDT | Severe Thunderstorm Warning | DMX | Wright | 51 min |
| Oct 24, 3:45 AM CDT | Severe Thunderstorm Warning | DMX | Monroe, Wapello | 29 min |
| Oct 24, 4:02 AM CDT | Severe Thunderstorm Warning | DMX | Mahaska | 21 min |
| Nov 29, 11:31 PM CST | Severe Thunderstorm Warning | DVN | Clinton | 29 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Pottawattamie County20
- Harrison County9
- Clayton County9
- Polk County9
- Marshall County8
- Dubuque County8
- Delaware County8
- Jones County8
- Story County7
- Black Hawk County6
- Carroll County6
- Jackson County6
- Dallas County6
- Jasper County6
- Shelby County6
- Wright County6
- Clay County6
- Guthrie County5
- Marion County5
- Buena Vista County5
- Mahaska County5
- Grundy County5
- Linn County5
- Bremer County5
- Plymouth County5
- Muscatine County4
- Clinton County4
- Buchanan County4
- Lucas County4
- Monroe County4
- Wayne County4
- Cerro Gordo County4
- Fayette County4
- Benton County4
- Butler County4
- Franklin County4
- Allamakee County4
- Appanoose County3
- Lee County3
- Boone County3
55 more counties
- Crawford County3
- Decatur County3
- Warren County3
- Woodbury County3
- Scott County3
- Greene County3
- Hamilton County3
- Mills County3
- Chickasaw County3
- Pocahontas County3
- Howard County3
- Taylor County2
- Cass County2
- Davis County2
- Cedar County2
- Des Moines County2
- Tama County2
- Audubon County2
- Louisa County2
- Adair County2
- Ringgold County2
- Clarke County2
- Sac County2
- Union County2
- Kossuth County2
- Winneshiek County2
- Hancock County2
- Floyd County2
- Iowa County2
- Page County2
- Webster County2
- Hardin County2
- Cherokee County2
- Montgomery County2
- Sioux County2
- O'Brien County2
- Palo Alto County2
- Adams County1
- Henry County1
- Calhoun County1
- Jefferson County1
- Washington County1
- Worth County1
- Van Buren County1
- Johnson County1
- Monona County1
- Madison County1
- Poweshiek County1
- Dickinson County1
- Emmet County1
- Winnebago County1
- Mitchell County1
- Osceola County1
- Fremont County1
- Wapello County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive19901992
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.