Alert archive / Iowa / Severe Thunderstorm Warnings
Severe Thunderstorm Warnings in Iowa, 1987
216 severe thunderstorm warnings in 1987. 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 1987. Tap one for its archive.
- Severe Thunderstorm Warnings
- 216
- Busiest month
- July63 severe thunderstorm warnings
- Busiest day
- August 16, 198717 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 22, 6:46 PM CST | Severe Thunderstorm Warning | FSD | Ida | 44 min |
| Mar 22, 6:46 PM CST | Severe Thunderstorm Warning | FSD | Monona | 59 min |
| Apr 26, 6:28 PM CDT | Severe Thunderstorm Warning | DMX | Pocahontas | 25 min |
| Apr 26, 8:40 PM CDT | Severe Thunderstorm Warning | DMX | Marshall, Story | 45 min |
| Apr 26, 9:23 PM CDT | Severe Thunderstorm Warning | DMX | Tama | 24 min |
| May 2, 4:10 PM CDT | Severe Thunderstorm Warning | DMX | Polk | 50 min |
| May 2, 5:23 PM CDT | Severe Thunderstorm Warning | DMX | Jasper | 27 min |
| May 13, 9:17 PM CDT | Severe Thunderstorm Warning | DMX | Clay, Palo Alto | 23 min |
| May 13, 9:57 PM CDT | Severe Thunderstorm Warning | DMX | Emmet, Kossuth | 25 min |
| May 18, 1:48 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Union | 37 min |
| May 18, 5:23 PM CDT | Severe Thunderstorm Warning | DMX | Decatur | 67 min |
| May 18, 6:22 PM CDT | Severe Thunderstorm Warning | DMX | Wayne | 50 min |
| May 18, 6:31 PM CDT | Severe Thunderstorm Warning | DMX | Iowa | 29 min |
| May 19, 8:05 PM CDT | Severe Thunderstorm Warning | DMX | Guthrie | 35 min |
| May 19, 8:24 PM CDT | Severe Thunderstorm Warning | DMX | Decatur | 66 min |
| May 19, 8:24 PM CDT | Severe Thunderstorm Warning | DMX | Ringgold | 46 min |
| May 20, 3:27 PM CDT | Severe Thunderstorm Warning | DMX | Union | 33 min |
| May 20, 3:30 PM CDT | Severe Thunderstorm Warning | DMX | Decatur | 30 min |
| May 20, 4:37 PM CDT | Severe Thunderstorm Warning | DMX | Linn | 41 min |
| May 20, 5:10 PM CDT | Severe Thunderstorm Warning | DVN | Scott | 50 min |
| May 20, 5:49 PM CDT | Severe Thunderstorm Warning | DMX | Mahaska | 41 min |
| May 20, 6:05 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk | 20 min |
| May 20, 6:05 PM CDT | Severe Thunderstorm Warning | DMX | Bremer | 40 min |
| May 20, 6:20 PM CDT | Severe Thunderstorm Warning | DMX | Bremer | 60 min |
| May 20, 6:31 PM CDT | Severe Thunderstorm Warning | DMX | Tama | 19 min |
| May 20, 7:00 PM CDT | Severe Thunderstorm Warning | DMX | Butler | 20 min |
| May 21, 5:50 PM CDT | Severe Thunderstorm Warning | DMX | Davis, Van Buren | 40 min |
| May 21, 6:44 PM CDT | Severe Thunderstorm Warning | DMX | Van Buren | 31 min |
| May 26, 3:45 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Muscatine | 25 min |
| May 26, 5:56 PM CDT | Severe Thunderstorm Warning | DMX | Dallas | 49 min |
| May 26, 6:17 PM CDT | Severe Thunderstorm Warning | DMX | Webster | 48 min |
| May 26, 6:17 PM CDT | Severe Thunderstorm Warning | DMX | Boone | 28 min |
| May 26, 6:35 PM CDT | Severe Thunderstorm Warning | DMX | Polk | 50 min |
| May 26, 6:47 PM CDT | Severe Thunderstorm Warning | DMX | Hamilton, Story | 53 min |
| May 26, 6:49 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose | 41 min |
| May 26, 6:51 PM CDT | Severe Thunderstorm Warning | DMX | Warren | 49 min |
| May 26, 7:34 PM CDT | Severe Thunderstorm Warning | DMX | Davis | 36 min |
| May 27, 5:38 PM CDT | Severe Thunderstorm Warning | DMX | Ringgold, Taylor | 37 min |
| May 27, 9:48 PM CDT | Severe Thunderstorm Warning | DVN | Jones | 57 min |
| May 30, 5:00 PM CDT | Severe Thunderstorm Warning | DMX | Iowa, Keokuk | 25 min |
| May 30, 9:04 PM CDT | Severe Thunderstorm Warning | FSD | Monona | 56 min |
| May 30, 9:34 PM CDT | Severe Thunderstorm Warning | OAX | Mills, Pottawattamie | 41 min |
| May 31, 3:13 PM CDT | Severe Thunderstorm Warning | DMX | Union | 34 min |
| May 31, 3:13 PM CDT | Severe Thunderstorm Warning | DMX | Adams | 17 min |
| May 31, 4:22 PM CDT | Severe Thunderstorm Warning | DMX | Guthrie | 38 min |
| May 31, 4:31 PM CDT | Severe Thunderstorm Warning | DMX | Dallas | 24 min |
| May 31, 5:01 PM CDT | Severe Thunderstorm Warning | DMX | Dallas, Guthrie | 59 min |
| May 31, 5:19 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Ringgold, Union | 41 min |
| May 31, 5:37 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Lucas | 38 min |
| May 31, 6:13 PM CDT | Severe Thunderstorm Warning | DMX | Lucas | 47 min |
| May 31, 6:25 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Monroe | 50 min |
| May 31, 7:57 PM CDT | Severe Thunderstorm Warning | DMX | Wayne | 23 min |
| May 31, 9:08 PM CDT | Severe Thunderstorm Warning | DMX | Monroe | 37 min |
| Jun 1, 5:57 PM CDT | Severe Thunderstorm Warning | DMX | Winnebago | 63 min |
| Jun 7, 5:09 PM CDT | Severe Thunderstorm Warning | FSD | Lyon | 66 min |
| Jun 7, 6:18 PM CDT | Severe Thunderstorm Warning | FSD | Lyon | 57 min |
| Jun 11, 4:57 PM CDT | Severe Thunderstorm Warning | DMX | Wright | 33 min |
| Jun 11, 6:02 PM CDT | Severe Thunderstorm Warning | DMX | Franklin | 15 min |
| Jun 12, 3:56 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills | 64 min |
| Jun 12, 4:56 PM CDT | Severe Thunderstorm Warning | OAX | Fremont | 64 min |
| Jun 16, 6:23 PM CDT | Severe Thunderstorm Warning | OAX | Montgomery, Page | 67 min |
| Jun 17, 12:05 PM CDT | Severe Thunderstorm Warning | DMX | Polk | 35 min |
| Jun 17, 12:22 PM CDT | Severe Thunderstorm Warning | DMX | Floyd, Mitchell | 68 min |
| Jun 17, 12:31 PM CDT | Severe Thunderstorm Warning | DMX | Decatur | 44 min |
| Jun 17, 12:40 PM CDT | Severe Thunderstorm Warning | DMX | Jasper | 35 min |
| Jun 17, 1:06 PM CDT | Severe Thunderstorm Warning | DMX | Marshall | 34 min |
| Jun 17, 2:30 PM CDT | Severe Thunderstorm Warning | DMX | Butler, Franklin | 60 min |
| Jun 17, 3:25 PM CDT | Severe Thunderstorm Warning | DMX | Fayette | 65 min |
| Jun 17, 3:44 PM CDT | Severe Thunderstorm Warning | DMX | Buchanan | 61 min |
| Jun 17, 4:30 PM CDT | Severe Thunderstorm Warning | DVN | Clayton, Delaware | 50 min |
| Jun 18, 3:05 AM CDT | Severe Thunderstorm Warning | DMX | Polk | 55 min |
| Jun 18, 3:11 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose | 49 min |
| Jun 18, 5:56 PM CDT | Severe Thunderstorm Warning | DMX | Iowa | 29 min |
| Jun 18, 11:19 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Bremer | 26 min |
| Jun 21, 6:25 PM CDT | Severe Thunderstorm Warning | DMX | Dallas, Guthrie | 35 min |
| Jun 21, 6:59 PM CDT | Severe Thunderstorm Warning | DMX | Dallas, Madison | 46 min |
| Jun 21, 7:46 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Madison, Warren | 44 min |
| Jun 21, 8:09 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Pocahontas | 51 min |
| Jun 21, 8:54 PM CDT | Severe Thunderstorm Warning | DMX | Sac | 36 min |
| Jun 21, 9:30 PM CDT | Severe Thunderstorm Warning | DMX | Carroll, Crawford, Sac | 45 min |
| Jun 23, 3:31 PM CDT | Severe Thunderstorm Warning | DMX | Floyd, Mitchell | 29 min |
| Jun 24, 3:11 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee | 91 min |
| Jun 24, 4:02 PM CDT | Severe Thunderstorm Warning | DMX | Buena Vista | 40 min |
| Jun 24, 4:24 PM CDT | Severe Thunderstorm Warning | DMX | Hardin | 36 min |
| Jun 24, 6:37 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth, Woodbury | 68 min |
| Jun 24, 6:55 PM CDT | Severe Thunderstorm Warning | FSD | Monona | 55 min |
| Jun 24, 7:28 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 52 min |
| Jun 24, 7:50 PM CDT | Severe Thunderstorm Warning | OAX | Mills | 55 min |
| Jun 24, 7:50 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 55 min |
| Jun 24, 8:05 PM CDT | Severe Thunderstorm Warning | DMX | Greene | 35 min |
| Jun 24, 8:06 PM CDT | Severe Thunderstorm Warning | FSD | O'Brien | 23 min |
| Jun 24, 8:07 PM CDT | Severe Thunderstorm Warning | OAX | Fremont | 53 min |
| Jun 24, 8:44 PM CDT | Severe Thunderstorm Warning | OAX | Montgomery, Page, Pottawattamie | 51 min |
| Jun 24, 8:59 PM CDT | Severe Thunderstorm Warning | DMX | Adams, Taylor | 51 min |
| Jun 24, 9:12 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Madison | 63 min |
| Jun 28, 7:31 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth | 59 min |
| Jun 28, 8:03 PM CDT | Severe Thunderstorm Warning | FSD | Monona | 57 min |
| Jul 5, 5:05 PM CDT | Severe Thunderstorm Warning | FSD | Monona, Woodbury | 55 min |
| Jul 5, 6:11 PM CDT | Severe Thunderstorm Warning | FSD | Monona, Woodbury | 64 min |
| Jul 6, 12:35 PM CDT | Severe Thunderstorm Warning | DVN | Dubuque, Jones | 55 min |
| Jul 6, 12:55 PM CDT | Severe Thunderstorm Warning | DVN | Jackson | 65 min |
| Jul 6, 2:31 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk | 59 min |
| Jul 6, 3:22 PM CDT | Severe Thunderstorm Warning | DMX | Benton, Linn | 38 min |
| Jul 6, 3:25 PM CDT | Severe Thunderstorm Warning | DMX | Buchanan | 50 min |
| Jul 6, 3:58 PM CDT | Severe Thunderstorm Warning | DMX | Linn | 47 min |
| Jul 6, 4:30 PM CDT | Severe Thunderstorm Warning | DMX | Linn | 45 min |
| Jul 6, 4:35 PM CDT | Severe Thunderstorm Warning | DVN | Jones | 55 min |
| Jul 6, 5:16 PM CDT | Severe Thunderstorm Warning | DMX | Johnson, Linn | 44 min |
| Jul 6, 6:06 PM CDT | Severe Thunderstorm Warning | DVN | Cedar | 39 min |
| Jul 6, 6:09 PM CDT | Severe Thunderstorm Warning | DMX | Johnson | 41 min |
| Jul 6, 7:27 PM CDT | Severe Thunderstorm Warning | DMX | Mahaska | 33 min |
| Jul 7, 12:33 AM CDT | Severe Thunderstorm Warning | FSD | Lyon, Sioux | 57 min |
| Jul 7, 1:00 AM CDT | Severe Thunderstorm Warning | FSD | Lyon, Osceola, Sioux | 60 min |
| Jul 7, 1:07 AM CDT | Severe Thunderstorm Warning | FSD | Monona, Woodbury | 53 min |
| Jul 7, 1:07 AM CDT | Severe Thunderstorm Warning | FSD | Plymouth | 53 min |
| Jul 7, 1:27 AM CDT | Severe Thunderstorm Warning | FSD | Cherokee, O'Brien | 63 min |
| Jul 7, 1:46 AM CDT | Severe Thunderstorm Warning | FSD | Ida | 59 min |
| Jul 7, 2:06 AM CDT | Severe Thunderstorm Warning | DMX | Buena Vista, Clay | 84 min |
| Jul 7, 2:08 AM CDT | Severe Thunderstorm Warning | FSD | Monona | 37 min |
| Jul 8, 2:17 PM CDT | Severe Thunderstorm Warning | DMX | Guthrie | 43 min |
| Jul 8, 6:03 PM CDT | Severe Thunderstorm Warning | DVN | Louisa, Muscatine | 27 min |
| Jul 8, 6:06 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Grundy | 54 min |
| Jul 8, 7:06 PM CDT | Severe Thunderstorm Warning | DMX | Benton | 39 min |
| Jul 8, 7:27 PM CDT | Severe Thunderstorm Warning | DMX | Linn | 38 min |
| Jul 8, 8:05 PM CDT | Severe Thunderstorm Warning | DMX | Linn | 30 min |
| Jul 9, 1:32 AM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 58 min |
| Jul 11, 4:06 AM CDT | Severe Thunderstorm Warning | FSD | Lyon | 54 min |
| Jul 11, 5:50 AM CDT | Severe Thunderstorm Warning | DMX | Kossuth | 40 min |
| Jul 11, 3:43 PM CDT | Severe Thunderstorm Warning | DMX | Dickinson, Emmet | 32 min |
| Jul 11, 3:58 PM CDT | Severe Thunderstorm Warning | FSD | Sioux | 62 min |
| Jul 11, 4:09 PM CDT | Severe Thunderstorm Warning | DMX | Dickinson | 31 min |
| Jul 11, 4:20 PM CDT | Severe Thunderstorm Warning | DMX | Emmet | 40 min |
| Jul 11, 5:00 PM CDT | Severe Thunderstorm Warning | FSD | Osceola, Sioux | 30 min |
| Jul 11, 7:56 PM CDT | Severe Thunderstorm Warning | DMX | Chickasaw | 64 min |
| Jul 11, 8:54 PM CDT | Severe Thunderstorm Warning | DMX | Buena Vista, Pocahontas | 36 min |
| Jul 11, 10:22 PM CDT | Severe Thunderstorm Warning | FSD | Lyon, Sioux | 68 min |
| Jul 11, 10:54 PM CDT | Severe Thunderstorm Warning | FSD | Osceola | 66 min |
| Jul 11, 11:30 PM CDT | Severe Thunderstorm Warning | DMX | Marshall, Story | 40 min |
| Jul 11, 11:33 PM CDT | Severe Thunderstorm Warning | OAX | Harrison | 57 min |
| Jul 11, 11:50 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Grundy | 55 min |
| Jul 14, 4:08 PM CDT | Severe Thunderstorm Warning | DMX | Mitchell, Worth | 67 min |
| Jul 14, 5:52 PM CDT | Severe Thunderstorm Warning | DMX | Kossuth | 38 min |
| Jul 14, 7:25 PM CDT | Severe Thunderstorm Warning | DMX | Crawford | 35 min |
| Jul 14, 7:42 PM CDT | Severe Thunderstorm Warning | OAX | Shelby | 63 min |
| Jul 14, 10:15 PM CDT | Severe Thunderstorm Warning | DMX | Adams | 35 min |
| Jul 20, 11:33 PM CDT | Severe Thunderstorm Warning | FSD | Lyon | 57 min |
| Jul 21, 5:12 PM CDT | Severe Thunderstorm Warning | DVN | Clinton | 48 min |
| Jul 21, 6:03 PM CDT | Severe Thunderstorm Warning | DVN | Scott | 57 min |
| Jul 24, 5:59 PM CDT | Severe Thunderstorm Warning | FSD | Woodbury | 61 min |
| Jul 24, 6:00 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Carroll, Greene | 60 min |
| Jul 24, 6:40 PM CDT | Severe Thunderstorm Warning | DMX | Webster | 30 min |
| Jul 24, 7:11 PM CDT | Severe Thunderstorm Warning | DMX | Story | 64 min |
| Jul 24, 7:49 PM CDT | Severe Thunderstorm Warning | DMX | Boone | 41 min |
| Jul 24, 8:15 PM CDT | Severe Thunderstorm Warning | DMX | Polk | 30 min |
| Jul 24, 8:25 PM CDT | Severe Thunderstorm Warning | DMX | Polk | 35 min |
| Jul 24, 9:06 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Greene | 39 min |
| Jul 24, 10:30 PM CDT | Severe Thunderstorm Warning | DMX | Van Buren | 30 min |
| Jul 26, 1:26 PM CDT | Severe Thunderstorm Warning | DMX | Winneshiek | 49 min |
| Jul 29, 6:16 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Scott | 14 min |
| Jul 29, 7:27 PM CDT | Severe Thunderstorm Warning | DMX | Allamakee | 48 min |
| Aug 3, 2:59 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Scott | 16 min |
| Aug 3, 3:17 PM CDT | Severe Thunderstorm Warning | DMX | Wayne | 43 min |
| Aug 3, 3:46 PM CDT | Severe Thunderstorm Warning | DMX | Wapello | 59 min |
| Aug 3, 4:14 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose | 31 min |
| Aug 3, 4:14 PM CDT | Severe Thunderstorm Warning | DMX | Davis | 61 min |
| Aug 3, 4:43 PM CDT | Severe Thunderstorm Warning | DMX | Jefferson, Van Buren | 39 min |
| Aug 7, 8:52 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 68 min |
| Aug 8, 4:36 PM CDT | Severe Thunderstorm Warning | DMX | Jefferson, Washington | 29 min |
| Aug 16, 12:19 AM CDT | Severe Thunderstorm Warning | FSD | Sioux | 56 min |
| Aug 16, 12:59 AM CDT | Severe Thunderstorm Warning | FSD | Osceola | 61 min |
| Aug 16, 1:05 AM CDT | Severe Thunderstorm Warning | DMX | Dickinson | 55 min |
| Aug 16, 3:22 PM CDT | Severe Thunderstorm Warning | DMX | Marshall | 28 min |
| Aug 16, 3:49 PM CDT | Severe Thunderstorm Warning | DMX | Marshall | 14 min |
| Aug 16, 3:49 PM CDT | Severe Thunderstorm Warning | DMX | Tama | 41 min |
| Aug 16, 4:26 PM CDT | Severe Thunderstorm Warning | DMX | Benton | 39 min |
| Aug 16, 4:35 PM CDT | Severe Thunderstorm Warning | DVN | Cedar | 25 min |
| Aug 16, 4:52 PM CDT | Severe Thunderstorm Warning | DVN | Jackson | 53 min |
| Aug 16, 5:01 PM CDT | Severe Thunderstorm Warning | DMX | Benton, Linn | 49 min |
| Aug 16, 5:11 PM CDT | Severe Thunderstorm Warning | DMX | Poweshiek | 42 min |
| Aug 16, 5:21 PM CDT | Severe Thunderstorm Warning | DMX | Washington | 36 min |
| Aug 16, 5:21 PM CDT | Severe Thunderstorm Warning | DMX | Jefferson | 28 min |
| Aug 16, 5:22 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Clinton | 38 min |
| Aug 16, 6:00 PM CDT | Severe Thunderstorm Warning | DVN | Jones | 50 min |
| Aug 16, 6:12 PM CDT | Severe Thunderstorm Warning | DVN | Clinton | 33 min |
| Aug 16, 6:48 PM CDT | Severe Thunderstorm Warning | DVN | Scott | 42 min |
| Aug 17, 5:40 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Carroll, Greene | 25 min |
| Aug 17, 5:40 PM CDT | Severe Thunderstorm Warning | DMX | Webster | 25 min |
| Aug 17, 6:30 PM CDT | Severe Thunderstorm Warning | DMX | Story | 45 min |
| Aug 17, 6:30 PM CDT | Severe Thunderstorm Warning | DMX | Boone | 25 min |
| Aug 17, 6:57 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Polk | 63 min |
| Aug 17, 7:55 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marion, Poweshiek | 22 min |
| Aug 17, 7:55 PM CDT | Severe Thunderstorm Warning | DMX | Mahaska | 45 min |
| Aug 19, 2:20 PM CDT | Severe Thunderstorm Warning | OAX | Montgomery, Page | 55 min |
| Aug 21, 12:06 AM CDT | Severe Thunderstorm Warning | DMX | Linn | 34 min |
| Aug 21, 12:32 AM CDT | Severe Thunderstorm Warning | DVN | Jones | 43 min |
| Aug 21, 12:39 AM CDT | Severe Thunderstorm Warning | DVN | Cedar | 21 min |
| Aug 21, 1:02 AM CDT | Severe Thunderstorm Warning | DVN | Cedar, Muscatine | 38 min |
| Aug 21, 1:49 AM CDT | Severe Thunderstorm Warning | DVN | Scott | 26 min |
| Aug 21, 2:18 AM CDT | Severe Thunderstorm Warning | DVN | Scott | 42 min |
| Aug 21, 3:31 AM CDT | Severe Thunderstorm Warning | DVN | Scott | 29 min |
| Aug 21, 4:01 AM CDT | Severe Thunderstorm Warning | DVN | Scott | 59 min |
| Aug 21, 4:57 AM CDT | Severe Thunderstorm Warning | DVN | Cedar, Clinton, Scott | 33 min |
| Aug 21, 5:28 AM CDT | Severe Thunderstorm Warning | DVN | Scott | 47 min |
| Sep 5, 6:06 PM CDT | Severe Thunderstorm Warning | OAX | Montgomery | 69 min |
| Sep 5, 6:20 PM CDT | Severe Thunderstorm Warning | DMX | Cass | 40 min |
| Sep 14, 12:18 PM CDT | Severe Thunderstorm Warning | DMX | Dickinson | 42 min |
| Sep 14, 1:20 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo | 40 min |
| Sep 14, 1:20 PM CDT | Severe Thunderstorm Warning | DMX | Clay | 50 min |
| Sep 14, 2:02 PM CDT | Severe Thunderstorm Warning | DMX | Kossuth | 48 min |
| Sep 14, 2:08 PM CDT | Severe Thunderstorm Warning | DMX | Emmet | 52 min |
| Sep 14, 2:15 PM CDT | Severe Thunderstorm Warning | DMX | Dickinson | 50 min |
| Sep 14, 4:33 PM CDT | Severe Thunderstorm Warning | DMX | Buena Vista, Clay, Pocahontas | 21 min |
| Sep 14, 4:48 PM CDT | Severe Thunderstorm Warning | DMX | Pocahontas | 42 min |
| Sep 14, 5:21 PM CDT | Severe Thunderstorm Warning | DMX | Hamilton, Wright | 54 min |
| Sep 14, 5:40 PM CDT | Severe Thunderstorm Warning | DMX | Pocahontas, Webster | 35 min |
| Sep 14, 6:25 PM CDT | Severe Thunderstorm Warning | DMX | Benton, Linn | 40 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Scott County11
- Linn County10
- Monona County8
- Polk County7
- Cedar County7
- Lyon County7
- Pocahontas County6
- Pottawattamie County6
- Sioux County6
- Clinton County6
- Marshall County5
- Story County5
- Guthrie County5
- Black Hawk County5
- Dallas County5
- Jones County5
- Woodbury County5
- Benton County5
- Dickinson County5
- Jasper County4
- Clay County4
- Emmet County4
- Kossuth County4
- Clarke County4
- Union County4
- Decatur County4
- Van Buren County4
- Webster County4
- Boone County4
- Appanoose County4
- Montgomery County4
- Buena Vista County4
- Greene County4
- Osceola County4
- Tama County3
- Wayne County3
- Iowa County3
- Ringgold County3
- Mahaska County3
- Bremer County3
52 more counties
- Davis County3
- Muscatine County3
- Mills County3
- Adams County3
- Fremont County3
- Page County3
- Mitchell County3
- Madison County3
- Calhoun County3
- Carroll County3
- Plymouth County3
- Jefferson County3
- Ida County2
- Butler County2
- Hamilton County2
- Warren County2
- Taylor County2
- Lucas County2
- Monroe County2
- Wright County2
- Franklin County2
- Floyd County2
- Buchanan County2
- Sac County2
- Crawford County2
- Cherokee County2
- O'Brien County2
- Jackson County2
- Johnson County2
- Grundy County2
- Washington County2
- Poweshiek County2
- Palo Alto County1
- Keokuk County1
- Winnebago County1
- Fayette County1
- Clayton County1
- Delaware County1
- Hardin County1
- Adair County1
- Dubuque County1
- Louisa County1
- Chickasaw County1
- Harrison County1
- Worth County1
- Shelby County1
- Winneshiek County1
- Allamakee County1
- Wapello County1
- Marion County1
- Cass County1
- Cerro Gordo County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive19861988
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.