Alert archive / Iowa / Severe Thunderstorm Warnings
Severe Thunderstorm Warnings in Iowa, 2016
382 severe thunderstorm warnings in 2016. 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 2016. Tap one for its archive.
- Severe Thunderstorm Warnings
- 382
- Busiest month
- July111 severe thunderstorm warnings
- Busiest day
- May 26, 201626 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 15, 5:09 PM CDT | Severe Thunderstorm Warning | DVN | Lee | 66 min |
| Mar 15, 5:58 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Henry, Louisa, Washington | 47 min |
| Mar 15, 6:26 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Louisa, Muscatine | 49 min |
| Mar 15, 6:30 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Jackson | 45 min |
| Mar 15, 6:50 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Clinton, Muscatine, Scott | 55 min |
| Mar 15, 7:30 PM CDT | Severe Thunderstorm Warning | DVN | Dubuque, Jackson | 45 min |
| Mar 23, 6:13 PM CDT | Severe Thunderstorm Warning | OAX | Montgomery, Page | 32 min |
| Mar 23, 6:36 PM CDT | Severe Thunderstorm Warning | DMX | Adams, Taylor | 39 min |
| Mar 30, 6:58 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Dallas, Greene, Guthrie | 32 min |
| Mar 30, 7:26 PM CDT | Severe Thunderstorm Warning | DMX | Dallas | 19 min |
| Mar 30, 8:00 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Polk | 35 min |
| Mar 31, 10:28 AM CDT | Severe Thunderstorm Warning | DVN | Clinton | 32 min |
| Apr 24, 3:56 PM CDT | Severe Thunderstorm Warning | OAX | Monona | 34 min |
| Apr 24, 4:04 PM CDT | Severe Thunderstorm Warning | OAX | Monona | 41 min |
| Apr 24, 4:06 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, Plymouth, Woodbury | 39 min |
| Apr 24, 4:30 PM CDT | Severe Thunderstorm Warning | OAX | Monona | 30 min |
| Apr 24, 4:43 PM CDT | Severe Thunderstorm Warning | FSD | Buena Vista, Cherokee, Ida, Plymouth, Woodbury | 47 min |
| Apr 24, 5:27 PM CDT | Severe Thunderstorm Warning | FSD | Buena Vista, Cherokee, Clay, O'Brien | 33 min |
| Apr 24, 6:04 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, Plymouth, Woodbury | 24 min |
| Apr 24, 6:33 PM CDT | Severe Thunderstorm Warning | DMX | Emmet, Kossuth, Palo Alto | 27 min |
| Apr 24, 8:45 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Dickinson, O'Brien, Osceola | 18 min |
| Apr 24, 8:48 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills, Montgomery, Page | 42 min |
| Apr 24, 9:32 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Adams, Cass, Union | 36 min |
| Apr 27, 2:26 PM CDT | Severe Thunderstorm Warning | OAX | Fremont | 49 min |
| Apr 27, 2:56 PM CDT | Severe Thunderstorm Warning | OAX | Mills | 49 min |
| Apr 27, 3:26 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Page | 32 min |
| Apr 27, 3:48 PM CDT | Severe Thunderstorm Warning | OAX | Mills, Pottawattamie | 27 min |
| Apr 27, 3:49 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills, Montgomery, Page | 41 min |
| Apr 27, 3:54 PM CDT | Severe Thunderstorm Warning | OAX | Montgomery, Pottawattamie | 36 min |
| Apr 27, 3:57 PM CDT | Severe Thunderstorm Warning | DMX | Taylor | 48 min |
| Apr 27, 3:59 PM CDT | Severe Thunderstorm Warning | DMX | Cass | 46 min |
| Apr 27, 5:42 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Clarke, Madison, Ringgold, Union | 48 min |
| Apr 27, 8:37 PM CDT | Severe Thunderstorm Warning | DVN | Van Buren | 24 min |
| May 3, 10:13 PM CDT | Severe Thunderstorm Warning | ARX | Clayton, Fayette | 27 min |
| May 9, 4:26 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth, Woodbury | 34 min |
| May 9, 5:36 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills | 24 min |
| May 9, 6:43 PM CDT | Severe Thunderstorm Warning | DMX | Audubon, Guthrie | 32 min |
| May 9, 7:15 PM CDT | Severe Thunderstorm Warning | DMX | Audubon, Guthrie | 45 min |
| May 9, 7:15 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Page | 45 min |
| May 9, 8:00 PM CDT | Severe Thunderstorm Warning | DMX | Audubon, Carroll, Greene, Guthrie | 45 min |
| May 9, 8:00 PM CDT | Severe Thunderstorm Warning | OAX | Montgomery, Page | 30 min |
| May 9, 8:37 PM CDT | Severe Thunderstorm Warning | DMX | Audubon, Carroll, Crawford | 37 min |
| May 11, 1:28 AM CDT | Severe Thunderstorm Warning | OAX | Mills | 32 min |
| May 11, 3:27 AM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 33 min |
| May 11, 7:10 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Clinton | 65 min |
| May 11, 7:41 PM CDT | Severe Thunderstorm Warning | DVN | Clinton | 43 min |
| May 13, 11:26 AM CDT | Severe Thunderstorm Warning | DMX | Adair, Cass | 49 min |
| May 13, 12:22 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Madison, Union | 23 min |
| May 23, 4:27 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth, Woodbury | 33 min |
| May 23, 5:22 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth | 23 min |
| May 23, 5:29 PM CDT | Severe Thunderstorm Warning | FSD | Lyon, O'Brien, Osceola, Sioux | 46 min |
| May 23, 5:39 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth | 36 min |
| May 23, 6:06 PM CDT | Severe Thunderstorm Warning | FSD | Lyon, Osceola | 39 min |
| May 23, 6:23 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, Plymouth | 37 min |
| May 23, 6:49 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, Clay, O'Brien | 23 min |
| May 25, 10:16 PM CDT | Severe Thunderstorm Warning | DMX | Emmet | 44 min |
| May 25, 11:24 PM CDT | Severe Thunderstorm Warning | FSD | Lyon, O'Brien, Osceola, Sioux | 51 min |
| May 25, 11:57 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Dickinson, O'Brien, Osceola | 48 min |
| May 26, 12:03 AM CDT | Severe Thunderstorm Warning | OAX | Page | 27 min |
| May 26, 1:00 AM CDT | Severe Thunderstorm Warning | DMX | Emmet, Kossuth, Palo Alto | 45 min |
| May 26, 1:07 AM CDT | Severe Thunderstorm Warning | OAX | Harrison, Pottawattamie | 23 min |
| May 26, 1:19 AM CDT | Severe Thunderstorm Warning | OAX | Harrison, Monona | 26 min |
| May 26, 1:22 AM CDT | Severe Thunderstorm Warning | OAX | Monona | 23 min |
| May 26, 1:41 AM CDT | Severe Thunderstorm Warning | DMX | Hancock, Kossuth, Winnebago | 34 min |
| May 26, 2:10 AM CDT | Severe Thunderstorm Warning | DMX | Adair, Audubon, Carroll, Cass, Crawford, Greene and 1 more | 50 min |
| May 26, 2:30 AM CDT | Severe Thunderstorm Warning | DMX | Boone, Dallas, Polk | 45 min |
| May 26, 2:42 AM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Worth | 28 min |
| May 26, 2:51 AM CDT | Severe Thunderstorm Warning | ARX | Mitchell | 54 min |
| May 26, 2:54 AM CDT | Severe Thunderstorm Warning | DMX | Boone, Calhoun, Carroll, Dallas, Greene, Guthrie and 4 more | 51 min |
| May 26, 3:21 AM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marshall, Polk, Story | 39 min |
| May 26, 3:36 AM CDT | Severe Thunderstorm Warning | DMX | Grundy, Hardin, Marshall, Story | 39 min |
| May 26, 4:01 AM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Grundy, Marshall, Tama | 29 min |
| May 26, 4:19 AM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Bremer, Tama | 26 min |
| May 26, 4:24 AM CDT | Severe Thunderstorm Warning | DVN | Benton, Buchanan, Linn | 51 min |
| May 26, 4:50 AM CDT | Severe Thunderstorm Warning | DVN | Cedar, Jones, Linn | 40 min |
| May 26, 4:52 AM CDT | Severe Thunderstorm Warning | ARX | Clayton, Fayette | 53 min |
| May 26, 4:57 AM CDT | Severe Thunderstorm Warning | DVN | Delaware | 34 min |
| May 26, 4:59 AM CDT | Severe Thunderstorm Warning | DVN | Iowa, Johnson | 31 min |
| May 26, 5:28 AM CDT | Severe Thunderstorm Warning | ARX | Allamakee | 47 min |
| May 26, 2:20 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Page | 25 min |
| May 26, 2:42 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Page | 21 min |
| May 28, 2:40 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Delaware, Dubuque, Jones | 50 min |
| May 28, 4:25 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Scott | 50 min |
| May 30, 4:34 PM CDT | Severe Thunderstorm Warning | DMX | Hamilton, Story | 26 min |
| May 30, 4:47 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Hamilton | 28 min |
| May 30, 4:50 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 25 min |
| May 30, 4:57 PM CDT | Severe Thunderstorm Warning | DMX | Hamilton | 33 min |
| May 30, 5:06 PM CDT | Severe Thunderstorm Warning | DMX | Dallas | 24 min |
| May 30, 5:15 PM CDT | Severe Thunderstorm Warning | DMX | Franklin, Hamilton, Hardin, Wright | 30 min |
| May 30, 5:23 PM CDT | Severe Thunderstorm Warning | DMX | Franklin, Wright | 22 min |
| May 30, 5:32 PM CDT | Severe Thunderstorm Warning | DMX | Carroll | 28 min |
| May 30, 5:46 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Dallas | 29 min |
| May 30, 6:11 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Dallas, Greene | 34 min |
| May 30, 6:18 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun | 27 min |
| May 30, 7:53 PM CDT | Severe Thunderstorm Warning | ARX | Fayette | 67 min |
| May 30, 8:05 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk | 25 min |
| May 30, 8:32 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Jones, Linn | 32 min |
| May 30, 8:35 PM CDT | Severe Thunderstorm Warning | ARX | Chickasaw, Fayette, Winneshiek | 40 min |
| May 30, 11:19 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Shelby | 26 min |
| May 31, 10:10 AM CDT | Severe Thunderstorm Warning | DVN | Clinton, Jackson | 35 min |
| May 31, 1:27 PM CDT | Severe Thunderstorm Warning | DMX | Worth | 18 min |
| Jun 3, 9:55 PM CDT | Severe Thunderstorm Warning | DMX | Grundy, Hardin, Marshall | 50 min |
| Jun 10, 5:05 PM CDT | Severe Thunderstorm Warning | DMX | Emmet | 40 min |
| Jun 10, 6:22 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Dickinson | 23 min |
| Jun 10, 7:24 PM CDT | Severe Thunderstorm Warning | FSD | Osceola | 36 min |
| Jun 10, 7:33 PM CDT | Severe Thunderstorm Warning | FSD | Dickinson | 42 min |
| Jun 10, 8:15 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Dickinson | 45 min |
| Jun 10, 9:00 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Dickinson, O'Brien, Osceola | 60 min |
| Jun 10, 9:59 PM CDT | Severe Thunderstorm Warning | FSD | Buena Vista, Cherokee, Clay, O'Brien | 61 min |
| Jun 10, 10:03 PM CDT | Severe Thunderstorm Warning | FSD | O'Brien, Osceola, Sioux | 42 min |
| Jun 10, 10:44 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, O'Brien, Sioux | 46 min |
| Jun 10, 11:15 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, O'Brien, Plymouth, Sioux | 45 min |
| Jun 10, 11:53 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, O'Brien, Plymouth, Sioux | 16 min |
| Jun 11, 2:41 AM CDT | Severe Thunderstorm Warning | ARX | Floyd | 34 min |
| Jun 11, 2:47 AM CDT | Severe Thunderstorm Warning | DMX | Bremer, Butler | 43 min |
| Jun 11, 4:09 PM CDT | Severe Thunderstorm Warning | DMX | Humboldt, Kossuth, Palo Alto, Pocahontas | 51 min |
| Jun 14, 1:55 PM CDT | Severe Thunderstorm Warning | ARX | Chickasaw, Howard, Mitchell | 21 min |
| Jun 14, 2:23 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Dickinson | 37 min |
| Jun 14, 2:48 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Dickinson | 27 min |
| Jun 14, 3:15 PM CDT | Severe Thunderstorm Warning | DMX | Emmet, Kossuth | 30 min |
| Jun 14, 3:20 PM CDT | Severe Thunderstorm Warning | DMX | Emmet, Kossuth, Palo Alto | 40 min |
| Jun 14, 3:35 PM CDT | Severe Thunderstorm Warning | ARX | Allamakee, Clayton | 25 min |
| Jun 14, 4:30 PM CDT | Severe Thunderstorm Warning | ARX | Chickasaw | 30 min |
| Jun 14, 6:05 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Greene, Webster | 40 min |
| Jun 14, 6:17 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Greene | 43 min |
| Jun 14, 7:43 PM CDT | Severe Thunderstorm Warning | DMX | Dallas | 47 min |
| Jun 14, 7:58 PM CDT | Severe Thunderstorm Warning | DVN | Buchanan, Delaware | 62 min |
| Jun 17, 6:43 PM CDT | Severe Thunderstorm Warning | FSD | Dickinson | 32 min |
| Jun 17, 7:45 PM CDT | Severe Thunderstorm Warning | DMX | Emmet, Kossuth, Palo Alto | 45 min |
| Jun 17, 8:18 PM CDT | Severe Thunderstorm Warning | FSD | Buena Vista, Cherokee, Clay, Dickinson, Lyon, O'Brien and 2 more | 42 min |
| Jun 17, 8:29 PM CDT | Severe Thunderstorm Warning | DMX | Emmet, Palo Alto, Pocahontas | 46 min |
| Jun 17, 8:44 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth, Sioux | 46 min |
| Jun 17, 9:44 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth, Sioux | 46 min |
| Jun 17, 9:53 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth, Woodbury | 52 min |
| Jun 17, 10:14 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, Ida, Plymouth, Woodbury | 46 min |
| Jun 17, 10:41 PM CDT | Severe Thunderstorm Warning | FSD | Woodbury | 49 min |
| Jun 17, 10:57 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, Ida, Plymouth, Woodbury | 37 min |
| Jun 20, 4:03 AM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Franklin | 27 min |
| Jun 20, 5:50 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 25 min |
| Jun 21, 8:43 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Wayne | 26 min |
| Jun 21, 9:36 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose | 39 min |
| Jun 21, 9:55 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Davis, Monroe | 50 min |
| Jun 21, 11:07 PM CDT | Severe Thunderstorm Warning | ARX | Chickasaw, Floyd | 38 min |
| Jun 21, 11:20 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Hancock, Kossuth, Winnebago, Worth | 40 min |
| Jun 22, 1:41 AM CDT | Severe Thunderstorm Warning | FSD | Buena Vista, Clay | 34 min |
| Jun 22, 2:02 AM CDT | Severe Thunderstorm Warning | DMX | Emmet, Humboldt, Kossuth, Palo Alto, Pocahontas | 43 min |
| Jun 22, 2:25 AM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Hancock, Kossuth, Winnebago | 50 min |
| Jun 22, 2:57 AM CDT | Severe Thunderstorm Warning | DMX | Franklin, Hamilton, Hancock, Hardin, Humboldt, Webster and 1 more | 48 min |
| Jun 22, 3:02 AM CDT | Severe Thunderstorm Warning | DVN | Louisa | 43 min |
| Jun 22, 3:22 AM CDT | Severe Thunderstorm Warning | DVN | Des Moines | 53 min |
| Jun 26, 12:12 AM CDT | Severe Thunderstorm Warning | DMX | Adams, Ringgold, Taylor, Union | 48 min |
| Jun 26, 12:45 AM CDT | Severe Thunderstorm Warning | DMX | Taylor | 45 min |
| Jun 26, 1:06 AM CDT | Severe Thunderstorm Warning | DMX | Ringgold | 39 min |
| Jun 27, 1:47 PM CDT | Severe Thunderstorm Warning | OAX | Mills, Pottawattamie | 28 min |
| Jun 27, 2:11 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills, Montgomery, Page | 38 min |
| Jun 27, 3:18 PM CDT | Severe Thunderstorm Warning | OAX | Fremont | 27 min |
| Jun 29, 4:55 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Shelby | 35 min |
| Jun 29, 5:28 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Shelby | 32 min |
| Jun 29, 5:59 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Pottawattamie | 31 min |
| Jun 29, 6:48 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 27 min |
| Jun 29, 7:34 PM CDT | Severe Thunderstorm Warning | OAX | Harrison | 26 min |
| Jun 30, 3:24 PM CDT | Severe Thunderstorm Warning | DMX | Hardin | 36 min |
| Jun 30, 3:53 PM CDT | Severe Thunderstorm Warning | DMX | Hardin, Marshall | 37 min |
| Jul 5, 9:57 PM CDT | Severe Thunderstorm Warning | OAX | Harrison | 48 min |
| Jul 5, 10:07 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Monona | 53 min |
| Jul 5, 10:19 PM CDT | Severe Thunderstorm Warning | OAX | Monona | 26 min |
| Jul 5, 10:24 PM CDT | Severe Thunderstorm Warning | DMX | Crawford | 51 min |
| Jul 5, 10:46 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Monona, Shelby | 44 min |
| Jul 5, 10:47 PM CDT | Severe Thunderstorm Warning | FSD | Ida, Woodbury | 28 min |
| Jul 5, 10:49 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Monona | 26 min |
| Jul 5, 10:54 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Carroll, Crawford, Sac | 51 min |
| Jul 5, 11:32 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Calhoun, Carroll, Greene, Webster | 58 min |
| Jul 6, 12:14 AM CDT | Severe Thunderstorm Warning | DMX | Boone, Dallas, Greene, Hamilton, Hardin, Polk and 2 more | 46 min |
| Jul 6, 12:49 AM CDT | Severe Thunderstorm Warning | DMX | Dallas, Guthrie | 41 min |
| Jul 6, 12:50 AM CDT | Severe Thunderstorm Warning | DVN | Jackson | 40 min |
| Jul 6, 1:26 AM CDT | Severe Thunderstorm Warning | DVN | Clinton | 64 min |
| Jul 6, 1:29 AM CDT | Severe Thunderstorm Warning | DVN | Jackson, Jones | 34 min |
| Jul 6, 2:42 AM CDT | Severe Thunderstorm Warning | DVN | Cedar, Clinton, Jackson, Johnson, Jones, Linn and 2 more | 48 min |
| Jul 6, 2:46 AM CDT | Severe Thunderstorm Warning | DVN | Delaware, Dubuque, Jackson, Jones, Linn | 44 min |
| Jul 6, 3:06 AM CDT | Severe Thunderstorm Warning | DVN | Clinton, Jackson, Scott | 54 min |
| Jul 6, 3:09 AM CDT | Severe Thunderstorm Warning | DVN | Johnson, Louisa, Muscatine, Scott | 51 min |
| Jul 6, 3:33 AM CDT | Severe Thunderstorm Warning | OAX | Mills, Montgomery, Pottawattamie | 42 min |
| Jul 6, 8:25 AM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Davis, Monroe, Wapello | 50 min |
| Jul 6, 11:31 PM CDT | Severe Thunderstorm Warning | OAX | Monona | 59 min |
| Jul 6, 11:52 PM CDT | Severe Thunderstorm Warning | FSD | Buena Vista, Cherokee, Clay, O'Brien | 38 min |
| Jul 7, 12:08 AM CDT | Severe Thunderstorm Warning | FSD | Ida, Woodbury | 52 min |
| Jul 7, 12:20 AM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Carroll, Crawford, Pocahontas, Sac | 40 min |
| Jul 7, 12:52 AM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Carroll, Greene, Pocahontas, Sac, Webster | 38 min |
| Jul 7, 1:09 AM CDT | Severe Thunderstorm Warning | DMX | Palo Alto | 36 min |
| Jul 7, 1:22 AM CDT | Severe Thunderstorm Warning | DMX | Emmet, Kossuth, Palo Alto, Pocahontas | 38 min |
| Jul 7, 2:02 AM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills, Pottawattamie | 43 min |
| Jul 7, 2:35 AM CDT | Severe Thunderstorm Warning | OAX | Fremont | 40 min |
| Jul 7, 2:43 AM CDT | Severe Thunderstorm Warning | DMX | Worth | 32 min |
| Jul 7, 2:50 AM CDT | Severe Thunderstorm Warning | ARX | Mitchell | 40 min |
| Jul 7, 3:13 AM CDT | Severe Thunderstorm Warning | OAX | Fremont, Page | 62 min |
| Jul 7, 3:33 AM CDT | Severe Thunderstorm Warning | DMX | Ringgold, Taylor | 42 min |
| Jul 7, 4:11 AM CDT | Severe Thunderstorm Warning | ARX | Allamakee, Winneshiek | 64 min |
| Jul 7, 4:14 AM CDT | Severe Thunderstorm Warning | DMX | Adams, Ringgold, Taylor, Union | 46 min |
| Jul 7, 5:45 AM CDT | Severe Thunderstorm Warning | DMX | Mahaska, Wapello | 45 min |
| Jul 7, 6:15 AM CDT | Severe Thunderstorm Warning | DVN | Henry, Jefferson, Keokuk, Washington | 45 min |
| Jul 7, 4:01 PM CDT | Severe Thunderstorm Warning | OAX | Monona | 44 min |
| Jul 7, 4:39 PM CDT | Severe Thunderstorm Warning | OAX | Monona | 51 min |
| Jul 7, 4:53 PM CDT | Severe Thunderstorm Warning | DMX | Kossuth, Palo Alto | 39 min |
| Jul 7, 5:12 PM CDT | Severe Thunderstorm Warning | OAX | Harrison | 48 min |
| Jul 7, 5:30 PM CDT | Severe Thunderstorm Warning | DMX | Kossuth | 2 min |
| Jul 7, 6:00 PM CDT | Severe Thunderstorm Warning | OAX | Shelby | 29 min |
| Jul 10, 9:41 AM CDT | Severe Thunderstorm Warning | FSD | Lyon | 34 min |
| Jul 11, 7:41 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Monona | 34 min |
| Jul 11, 8:10 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Monona | 35 min |
| Jul 11, 8:17 PM CDT | Severe Thunderstorm Warning | FSD | Buena Vista | 43 min |
| Jul 11, 8:29 PM CDT | Severe Thunderstorm Warning | DMX | Crawford | 46 min |
| Jul 11, 9:07 PM CDT | Severe Thunderstorm Warning | DMX | Carroll, Crawford, Sac | 38 min |
| Jul 11, 9:29 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Carroll, Greene, Sac | 46 min |
| Jul 11, 9:41 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Pocahontas, Sac, Webster | 34 min |
| Jul 13, 6:49 AM CDT | Severe Thunderstorm Warning | FSD | Lyon, O'Brien, Osceola, Sioux | 41 min |
| Jul 13, 7:12 AM CDT | Severe Thunderstorm Warning | FSD | Dickinson, Osceola | 48 min |
| Jul 13, 8:09 AM CDT | Severe Thunderstorm Warning | FSD | Clay, Dickinson, Lyon, O'Brien, Osceola, Sioux | 38 min |
| Jul 13, 8:20 AM CDT | Severe Thunderstorm Warning | FSD | Buena Vista, Cherokee, Ida, Plymouth, Woodbury | 40 min |
| Jul 13, 8:41 AM CDT | Severe Thunderstorm Warning | FSD | Buena Vista, Cherokee, Ida, Woodbury | 49 min |
| Jul 13, 9:01 AM CDT | Severe Thunderstorm Warning | DMX | Sac | 44 min |
| Jul 13, 1:21 PM CDT | Severe Thunderstorm Warning | DMX | Mahaska, Marion | 28 min |
| Jul 13, 1:28 PM CDT | Severe Thunderstorm Warning | DVN | Iowa, Keokuk | 47 min |
| Jul 13, 2:01 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Iowa, Johnson, Louisa, Muscatine, Washington | 59 min |
| Jul 13, 2:22 PM CDT | Severe Thunderstorm Warning | DVN | Henry, Jefferson | 53 min |
| Jul 13, 2:45 PM CDT | Severe Thunderstorm Warning | DVN | Louisa, Muscatine | 60 min |
| Jul 13, 3:48 PM CDT | Severe Thunderstorm Warning | DVN | Scott | 57 min |
| Jul 13, 5:51 PM CDT | Severe Thunderstorm Warning | DMX | Dallas, Guthrie, Madison | 39 min |
| Jul 16, 11:45 PM CDT | Severe Thunderstorm Warning | FSD | Lyon, Plymouth, Sioux | 30 min |
| Jul 17, 12:16 AM CDT | Severe Thunderstorm Warning | ARX | Mitchell | 59 min |
| Jul 17, 12:37 AM CDT | Severe Thunderstorm Warning | FSD | Lyon | 23 min |
| Jul 17, 12:41 AM CDT | Severe Thunderstorm Warning | FSD | Lyon, Sioux | 34 min |
| Jul 17, 1:37 AM CDT | Severe Thunderstorm Warning | DMX | Emmet, Kossuth | 38 min |
| Jul 17, 2:21 AM CDT | Severe Thunderstorm Warning | DMX | Humboldt, Kossuth, Palo Alto, Pocahontas | 30 min |
| Jul 17, 2:43 AM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Hamilton, Hancock, Humboldt, Kossuth, Pocahontas and 2 more | 62 min |
| Jul 17, 3:06 AM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Carroll, Greene, Webster | 39 min |
| Jul 17, 3:20 AM CDT | Severe Thunderstorm Warning | DMX | Boone, Franklin, Greene, Hamilton, Hardin, Story and 2 more | 55 min |
| Jul 17, 4:00 AM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Grundy, Marshall, Tama | 45 min |
| Jul 17, 4:37 AM CDT | Severe Thunderstorm Warning | DVN | Benton, Buchanan, Delaware, Iowa, Johnson, Linn | 53 min |
| Jul 17, 5:10 AM CDT | Severe Thunderstorm Warning | DVN | Buchanan, Delaware, Dubuque | 28 min |
| Jul 17, 5:31 AM CDT | Severe Thunderstorm Warning | DVN | Cedar, Clinton, Iowa, Johnson, Jones, Linn and 2 more | 44 min |
| Jul 17, 6:14 AM CDT | Severe Thunderstorm Warning | DVN | Clinton, Muscatine, Scott | 61 min |
| Jul 17, 6:24 AM CDT | Severe Thunderstorm Warning | DVN | Jackson | 49 min |
| Jul 17, 7:49 AM CDT | Severe Thunderstorm Warning | DMX | Adams, Ringgold, Taylor, Union | 56 min |
| Jul 17, 8:49 AM CDT | Severe Thunderstorm Warning | DMX | Audubon, Guthrie | 41 min |
| Jul 17, 9:29 AM CDT | Severe Thunderstorm Warning | DMX | Decatur, Ringgold | 46 min |
| Jul 17, 10:05 AM CDT | Severe Thunderstorm Warning | DMX | Butler, Franklin | 40 min |
| Jul 17, 10:42 AM CDT | Severe Thunderstorm Warning | DMX | Hamilton, Humboldt, Webster, Wright | 31 min |
| Jul 17, 11:04 AM CDT | Severe Thunderstorm Warning | DMX | Butler, Franklin, Wright | 31 min |
| Jul 17, 11:56 PM CDT | Severe Thunderstorm Warning | OAX | Page | 34 min |
| Jul 18, 12:30 AM CDT | Severe Thunderstorm Warning | OAX | Mills, Pottawattamie | 26 min |
| Jul 18, 12:57 AM CDT | Severe Thunderstorm Warning | DMX | Adair, Adams | 26 min |
| Jul 18, 1:14 AM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 31 min |
| Jul 18, 1:21 AM CDT | Severe Thunderstorm Warning | DMX | Taylor | 39 min |
| Jul 18, 1:37 AM CDT | Severe Thunderstorm Warning | DMX | Adams, Taylor | 38 min |
| Jul 18, 1:41 AM CDT | Severe Thunderstorm Warning | DMX | Boone, Greene | 29 min |
| Jul 18, 1:43 AM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 22 min |
| Jul 18, 2:03 AM CDT | Severe Thunderstorm Warning | OAX | Harrison, Pottawattamie | 42 min |
| Jul 19, 11:26 AM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie, Shelby | 34 min |
| Jul 19, 11:39 AM CDT | Severe Thunderstorm Warning | DMX | Audubon, Cass | 51 min |
| Jul 19, 12:20 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Adams, Audubon, Cass, Guthrie | 40 min |
| Jul 19, 1:48 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Decatur, Lucas, Ringgold, Union, Warren and 1 more | 42 min |
| Jul 19, 2:11 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Clarke, Decatur, Lucas, Monroe, Wayne | 49 min |
| Jul 19, 2:57 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Davis, Lucas, Monroe, Wayne | 33 min |
| Jul 19, 3:21 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Davis, Monroe, Wapello | 39 min |
| Jul 19, 3:24 PM CDT | Severe Thunderstorm Warning | DVN | Van Buren | 57 min |
| Jul 23, 2:20 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Bremer | 40 min |
| Jul 23, 2:30 PM CDT | Severe Thunderstorm Warning | DVN | Buchanan | 45 min |
| Jul 23, 3:13 PM CDT | Severe Thunderstorm Warning | DVN | Buchanan, Delaware | 62 min |
| Jul 23, 3:52 PM CDT | Severe Thunderstorm Warning | DVN | Buchanan, Delaware, Dubuque, Jones, Linn | 53 min |
| Jul 23, 4:38 PM CDT | Severe Thunderstorm Warning | DVN | Jackson, Jones | 67 min |
| Jul 23, 4:59 PM CDT | Severe Thunderstorm Warning | DVN | Dubuque, Jackson | 61 min |
| Jul 23, 6:08 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Clinton, Jackson, Jones | 67 min |
| Jul 24, 7:13 PM CDT | Severe Thunderstorm Warning | DVN | Lee | 22 min |
| Jul 24, 7:47 PM CDT | Severe Thunderstorm Warning | DVN | Lee | 58 min |
| Aug 4, 10:37 AM CDT | Severe Thunderstorm Warning | DMX | Butler, Franklin | 38 min |
| Aug 4, 11:10 AM CDT | Severe Thunderstorm Warning | DMX | Butler, Franklin, Grundy | 65 min |
| Aug 4, 4:18 PM CDT | Severe Thunderstorm Warning | ARX | Allamakee | 42 min |
| Aug 4, 4:23 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marshall | 37 min |
| Aug 4, 4:50 PM CDT | Severe Thunderstorm Warning | DMX | Tama | 55 min |
| Aug 4, 5:05 PM CDT | Severe Thunderstorm Warning | DMX | Franklin, Hamilton, Hardin, Wright | 40 min |
| Aug 4, 5:58 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Bremer, Butler | 47 min |
| Aug 4, 6:09 PM CDT | Severe Thunderstorm Warning | ARX | Allamakee, Winneshiek | 66 min |
| Aug 4, 6:46 PM CDT | Severe Thunderstorm Warning | ARX | Clayton, Fayette | 44 min |
| Aug 4, 6:52 PM CDT | Severe Thunderstorm Warning | DMX | Grundy, Jasper, Marshall, Poweshiek, Story, Tama | 68 min |
| Aug 4, 6:53 PM CDT | Severe Thunderstorm Warning | DVN | Buchanan, Delaware | 52 min |
| Aug 4, 7:15 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Linn | 60 min |
| Aug 4, 7:20 PM CDT | Severe Thunderstorm Warning | DMX | Tama | 25 min |
| Aug 4, 7:25 PM CDT | Severe Thunderstorm Warning | DVN | Dubuque | 50 min |
| Aug 4, 7:41 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Poweshiek, Tama | 64 min |
| Aug 4, 8:01 PM CDT | Severe Thunderstorm Warning | DVN | Jackson | 44 min |
| Aug 4, 8:04 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Clinton, Jackson, Jones | 56 min |
| Aug 4, 8:19 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Iowa, Johnson, Muscatine | 56 min |
| Aug 4, 8:43 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Muscatine, Scott | 62 min |
| Aug 4, 9:19 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Mahaska, Marion | 30 min |
| Aug 10, 3:47 PM CDT | Severe Thunderstorm Warning | DMX | Polk | 28 min |
| Aug 10, 3:54 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun | 36 min |
| Aug 10, 4:55 PM CDT | Severe Thunderstorm Warning | DMX | Palo Alto, Pocahontas | 35 min |
| Aug 10, 5:02 PM CDT | Severe Thunderstorm Warning | DMX | Dallas | 28 min |
| Aug 11, 3:15 AM CDT | Severe Thunderstorm Warning | FSD | Lyon, O'Brien, Osceola, Sioux | 30 min |
| Aug 11, 11:13 AM CDT | Severe Thunderstorm Warning | DVN | Clinton, Muscatine, Scott | 62 min |
| Aug 11, 5:56 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Monona | 49 min |
| Aug 11, 6:17 PM CDT | Severe Thunderstorm Warning | FSD | Woodbury | 43 min |
| Aug 11, 6:35 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Monona, Shelby | 55 min |
| Aug 11, 6:37 PM CDT | Severe Thunderstorm Warning | FSD | Ida, Woodbury | 53 min |
| Aug 11, 6:52 PM CDT | Severe Thunderstorm Warning | DMX | Carroll, Crawford, Sac | 53 min |
| Aug 11, 7:13 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Shelby | 62 min |
| Aug 11, 7:33 PM CDT | Severe Thunderstorm Warning | DMX | Audubon, Carroll, Crawford, Guthrie | 42 min |
| Aug 11, 7:45 PM CDT | Severe Thunderstorm Warning | DMX | Audubon, Guthrie | 45 min |
| Aug 11, 8:14 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Audubon, Boone, Dallas, Greene, Guthrie | 46 min |
| Aug 11, 8:20 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Adams, Audubon, Cass, Guthrie | 40 min |
| Aug 11, 8:39 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Boone, Dallas, Guthrie, Madison, Polk and 2 more | 66 min |
| Aug 11, 9:20 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Lucas, Madison, Marion, Union, Warren | 40 min |
| Aug 11, 9:27 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Jasper, Marion, Marshall, Polk, Story and 1 more | 46 min |
| Aug 11, 9:59 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Clarke, Jasper, Lucas, Mahaska, Marion and 3 more | 46 min |
| Aug 11, 10:02 PM CDT | Severe Thunderstorm Warning | OAX | Mills, Montgomery, Pottawattamie | 58 min |
| Aug 16, 8:20 PM CDT | Severe Thunderstorm Warning | DMX | Hancock, Kossuth, Winnebago | 40 min |
| Aug 16, 8:28 PM CDT | Severe Thunderstorm Warning | FSD | O'Brien, Sioux | 47 min |
| Aug 16, 8:50 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Hancock | 40 min |
| Aug 16, 9:10 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, O'Brien, Plymouth, Sioux | 50 min |
| Aug 16, 9:22 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, O'Brien, Plymouth, Sioux | 38 min |
| Aug 18, 6:35 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Worth | 11 min |
| Aug 19, 11:41 AM CDT | Severe Thunderstorm Warning | DMX | Butler, Franklin, Grundy, Hardin | 49 min |
| Aug 19, 3:16 PM CDT | Severe Thunderstorm Warning | DMX | Hancock, Kossuth, Wright | 44 min |
| Aug 19, 5:45 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Humboldt, Webster | 19 min |
| Aug 19, 6:49 PM CDT | Severe Thunderstorm Warning | DMX | Marshall, Story | 41 min |
| Aug 23, 1:43 PM CDT | Severe Thunderstorm Warning | FSD | Woodbury | 32 min |
| Aug 23, 2:08 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, Ida, Woodbury | 37 min |
| Aug 23, 3:34 PM CDT | Severe Thunderstorm Warning | DMX | Humboldt, Kossuth, Palo Alto, Pocahontas | 41 min |
| Aug 23, 7:36 PM CDT | Severe Thunderstorm Warning | OAX | Monona | 39 min |
| Aug 23, 9:01 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Pottawattamie | 44 min |
| Aug 23, 10:01 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Mills, Pottawattamie, Shelby | 29 min |
| Aug 23, 10:27 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Mills, Pottawattamie, Shelby | 48 min |
| Aug 23, 11:08 PM CDT | Severe Thunderstorm Warning | DMX | Adams, Cass | 37 min |
| Aug 24, 12:07 AM CDT | Severe Thunderstorm Warning | OAX | Page | 28 min |
| Aug 24, 12:59 AM CDT | Severe Thunderstorm Warning | DMX | Clarke, Decatur, Ringgold, Union | 46 min |
| Aug 24, 6:51 PM CDT | Severe Thunderstorm Warning | DMX | Mahaska, Marion | 24 min |
| Aug 24, 7:12 PM CDT | Severe Thunderstorm Warning | DMX | Mahaska, Poweshiek | 18 min |
| Aug 28, 3:44 PM CDT | Severe Thunderstorm Warning | OAX | Fremont | 31 min |
| Aug 28, 4:11 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Page | 34 min |
| Aug 28, 4:58 PM CDT | Severe Thunderstorm Warning | DMX | Greene, Guthrie | 31 min |
| Aug 28, 5:43 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Monona | 32 min |
| Aug 29, 3:59 PM CDT | Severe Thunderstorm Warning | DMX | Grundy | 46 min |
| Sep 5, 1:27 AM CDT | Severe Thunderstorm Warning | FSD | Cherokee, O'Brien, Plymouth, Sioux | 48 min |
| Sep 5, 1:37 AM CDT | Severe Thunderstorm Warning | FSD | Lyon, Osceola | 38 min |
| Sep 7, 7:56 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines | 28 min |
| Sep 9, 12:35 PM CDT | Severe Thunderstorm Warning | OAX | Harrison | 25 min |
| Sep 9, 12:57 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Monona | 33 min |
| Sep 9, 1:17 PM CDT | Severe Thunderstorm Warning | DMX | Crawford | 43 min |
| Sep 9, 2:33 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Greene, Hamilton, Story, Webster | 42 min |
| Sep 9, 2:59 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Dallas, Guthrie, Madison | 31 min |
| Sep 12, 10:32 PM CDT | Severe Thunderstorm Warning | OAX | Harrison | 19 min |
| Sep 15, 4:10 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Pottawattamie | 35 min |
| Sep 15, 4:49 PM CDT | Severe Thunderstorm Warning | OAX | Harrison | 41 min |
| Sep 15, 5:09 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Pottawattamie | 38 min |
| Sep 15, 5:28 PM CDT | Severe Thunderstorm Warning | DMX | Sac | 17 min |
| Sep 15, 6:25 PM CDT | Severe Thunderstorm Warning | OAX | Monona | 35 min |
| Sep 15, 6:44 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Monona | 46 min |
| Sep 15, 7:16 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Monona, Shelby | 44 min |
| Sep 16, 12:51 AM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills | 24 min |
| Sep 16, 1:15 AM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills, Montgomery, Page | 30 min |
| Sep 16, 1:44 AM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills, Montgomery, Page | 31 min |
| Sep 19, 2:24 PM CDT | Severe Thunderstorm Warning | ARX | Allamakee | 21 min |
| Sep 19, 2:56 PM CDT | Severe Thunderstorm Warning | ARX | Clayton | 34 min |
| Sep 19, 4:35 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Mahaska, Marion, Poweshiek | 40 min |
| Sep 19, 5:06 PM CDT | Severe Thunderstorm Warning | DMX | Lucas, Monroe | 39 min |
| Sep 19, 5:42 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Lucas, Monroe, Wayne | 48 min |
| Sep 19, 6:20 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Wayne | 40 min |
| Sep 21, 3:32 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo | 43 min |
| Sep 21, 4:21 PM CDT | Severe Thunderstorm Warning | ARX | Floyd | 39 min |
| Sep 21, 4:23 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo | 37 min |
| Sep 21, 4:57 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo | 31 min |
| Sep 21, 5:03 PM CDT | Severe Thunderstorm Warning | ARX | Floyd | 57 min |
| Sep 21, 5:13 PM CDT | Severe Thunderstorm Warning | DMX | Butler, Franklin | 47 min |
| Sep 21, 5:45 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Worth | 45 min |
| Sep 21, 5:52 PM CDT | Severe Thunderstorm Warning | ARX | Floyd, Mitchell | 35 min |
| Sep 21, 6:01 PM CDT | Severe Thunderstorm Warning | ARX | Floyd | 44 min |
| Sep 21, 6:44 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo | 46 min |
| Sep 21, 7:05 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo | 55 min |
| Sep 21, 7:11 PM CDT | Severe Thunderstorm Warning | ARX | Floyd | 49 min |
| Oct 6, 10:08 PM CDT | Severe Thunderstorm Warning | DVN | Muscatine, Scott | 52 min |
| Oct 25, 7:11 PM CDT | Severe Thunderstorm Warning | DMX | Emmet, Kossuth | 49 min |
| Oct 25, 7:58 PM CDT | Severe Thunderstorm Warning | DMX | Franklin | 36 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Harrison County30
- Monona County22
- Pottawattamie County22
- O'Brien County21
- Cherokee County20
- Plymouth County20
- Kossuth County20
- Fremont County18
- Sioux County18
- Greene County17
- Guthrie County17
- Woodbury County17
- Mills County17
- Clinton County16
- Page County16
- Boone County16
- Dallas County15
- Jackson County14
- Clay County14
- Osceola County14
- Carroll County14
- Palo Alto County13
- Webster County13
- Franklin County13
- Cedar County12
- Muscatine County12
- Emmet County12
- Dickinson County12
- Audubon County12
- Lyon County12
- Cerro Gordo County12
- Calhoun County12
- Hamilton County12
- Scott County11
- Adair County11
- Story County11
- Jones County11
- Shelby County11
- Pocahontas County11
- Montgomery County10
59 more counties
- Adams County10
- Crawford County10
- Marshall County10
- Hardin County10
- Appanoose County10
- Taylor County9
- Jasper County9
- Buena Vista County9
- Ida County9
- Union County9
- Ringgold County9
- Linn County9
- Delaware County9
- Wright County9
- Sac County9
- Polk County8
- Cass County8
- Hancock County8
- Grundy County8
- Buchanan County8
- Butler County8
- Humboldt County8
- Monroe County8
- Dubuque County7
- Tama County7
- Johnson County7
- Floyd County7
- Wayne County7
- Mahaska County7
- Marion County7
- Lucas County7
- Louisa County6
- Clarke County6
- Madison County6
- Worth County6
- Black Hawk County6
- Iowa County6
- Allamakee County6
- Clayton County5
- Fayette County5
- Mitchell County5
- Warren County5
- Winnebago County4
- Bremer County4
- Chickasaw County4
- Davis County4
- Decatur County4
- Poweshiek County4
- Lee County3
- Des Moines County3
- Henry County3
- Washington County3
- Benton County3
- Winneshiek County3
- Wapello County3
- Van Buren County2
- Jefferson County2
- Keokuk County2
- Howard County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20152017
Sources
National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Rebuilt daily.