Alert archive / Iowa / Severe Thunderstorm Warnings
Severe Thunderstorm Warnings in Iowa, 2017
622 severe thunderstorm warnings in 2017. 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 2017. Tap one for its archive.
- Severe Thunderstorm Warnings
- 622
- Busiest month
- June226 severe thunderstorm warnings
- Busiest day
- May 17, 201772 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 |
|---|---|---|---|---|
| Feb 23, 11:22 PM CST | Severe Thunderstorm Warning | DMX | Adair, Cass, Guthrie | 23 min |
| Feb 28, 3:04 PM CST | Severe Thunderstorm Warning | DVN | Lee | 41 min |
| Feb 28, 3:26 PM CST | Severe Thunderstorm Warning | DVN | Iowa, Johnson, Keokuk, Washington | 36 min |
| Feb 28, 3:44 PM CST | Severe Thunderstorm Warning | DVN | Lee | 46 min |
| Feb 28, 3:51 PM CST | Severe Thunderstorm Warning | DVN | Cedar, Johnson, Muscatine | 39 min |
| Feb 28, 4:01 PM CST | Severe Thunderstorm Warning | DMX | Mahaska, Marion | 44 min |
| Feb 28, 4:01 PM CST | Severe Thunderstorm Warning | DVN | Cedar, Clinton, Scott | 59 min |
| Feb 28, 4:23 PM CST | Severe Thunderstorm Warning | DVN | Clinton | 67 min |
| Feb 28, 4:45 PM CST | Severe Thunderstorm Warning | DMX | Mahaska | 15 min |
| Feb 28, 5:19 PM CST | Severe Thunderstorm Warning | DVN | Iowa, Keokuk, Washington | 26 min |
| Feb 28, 5:28 PM CST | Severe Thunderstorm Warning | DVN | Cedar, Johnson | 29 min |
| Feb 28, 5:44 PM CST | Severe Thunderstorm Warning | DVN | Johnson | 31 min |
| Feb 28, 6:05 PM CST | Severe Thunderstorm Warning | DVN | Cedar, Johnson, Muscatine | 40 min |
| Feb 28, 6:37 PM CST | Severe Thunderstorm Warning | DVN | Cedar, Clinton, Scott | 53 min |
| Feb 28, 7:24 PM CST | Severe Thunderstorm Warning | DVN | Des Moines, Henry, Lee, Louisa | 51 min |
| Feb 28, 8:22 PM CST | Severe Thunderstorm Warning | DVN | Scott | 23 min |
| Mar 6, 2:09 PM CST | Severe Thunderstorm Warning | OAX | Harrison, Monona | 36 min |
| Mar 6, 2:40 PM CST | Severe Thunderstorm Warning | OAX | Monona | 35 min |
| Mar 6, 2:46 PM CST | Severe Thunderstorm Warning | FSD | Cherokee, Ida, Woodbury | 44 min |
| Mar 6, 3:20 PM CST | Severe Thunderstorm Warning | OAX | Harrison, Pottawattamie | 25 min |
| Mar 6, 3:38 PM CST | Severe Thunderstorm Warning | OAX | Harrison, Pottawattamie, Shelby | 37 min |
| Mar 6, 3:40 PM CST | Severe Thunderstorm Warning | DMX | Audubon, Carroll, Greene, Guthrie | 50 min |
| Mar 6, 3:47 PM CST | Severe Thunderstorm Warning | OAX | Mills, Pottawattamie | 28 min |
| Mar 6, 3:50 PM CST | Severe Thunderstorm Warning | DMX | Calhoun, Crawford, Sac | 55 min |
| Mar 6, 4:02 PM CST | Severe Thunderstorm Warning | OAX | Harrison, Pottawattamie, Shelby | 28 min |
| Mar 6, 4:04 PM CST | Severe Thunderstorm Warning | DMX | Emmet, Kossuth, Palo Alto, Pocahontas | 41 min |
| Mar 6, 4:09 PM CST | Severe Thunderstorm Warning | OAX | Fremont, Mills, Montgomery, Pottawattamie | 36 min |
| Mar 6, 4:13 PM CST | Severe Thunderstorm Warning | DMX | Calhoun, Pocahontas, Webster | 47 min |
| Mar 6, 4:19 PM CST | Severe Thunderstorm Warning | DMX | Calhoun, Carroll, Crawford, Sac | 41 min |
| Mar 6, 4:29 PM CST | Severe Thunderstorm Warning | DMX | Hancock, Humboldt, Kossuth, Webster, Wright | 46 min |
| Mar 6, 4:31 PM CST | Severe Thunderstorm Warning | DMX | Audubon, Calhoun, Carroll, Greene | 44 min |
| Mar 6, 4:41 PM CST | Severe Thunderstorm Warning | DMX | Hamilton, Humboldt, Webster, Wright | 49 min |
| Mar 6, 4:43 PM CST | Severe Thunderstorm Warning | DMX | Kossuth, Palo Alto | 18 min |
| Mar 6, 4:47 PM CST | Severe Thunderstorm Warning | DMX | Kossuth, Winnebago | 33 min |
| Mar 6, 4:53 PM CST | Severe Thunderstorm Warning | OAX | Fremont | 37 min |
| Mar 6, 4:56 PM CST | Severe Thunderstorm Warning | OAX | Fremont, Mills, Montgomery, Page | 34 min |
| Mar 6, 4:58 PM CST | Severe Thunderstorm Warning | DMX | Hancock, Humboldt, Kossuth, Webster, Winnebago, Wright | 47 min |
| Mar 6, 5:00 PM CST | Severe Thunderstorm Warning | DMX | Calhoun, Humboldt, Kossuth, Pocahontas, Webster | 45 min |
| Mar 6, 5:06 PM CST | Severe Thunderstorm Warning | OAX | Fremont, Page | 24 min |
| Mar 6, 5:07 PM CST | Severe Thunderstorm Warning | DMX | Adair, Audubon, Cass, Greene, Guthrie | 68 min |
| Mar 6, 5:10 PM CST | Severe Thunderstorm Warning | DMX | Boone, Calhoun, Greene, Webster | 50 min |
| Mar 6, 5:19 PM CST | Severe Thunderstorm Warning | OAX | Montgomery | 26 min |
| Mar 6, 5:29 PM CST | Severe Thunderstorm Warning | OAX | Fremont, Montgomery, Page | 31 min |
| Mar 6, 5:37 PM CST | Severe Thunderstorm Warning | DMX | Franklin, Hamilton, Hardin, Humboldt, Webster, Wright | 38 min |
| Mar 6, 5:39 PM CST | Severe Thunderstorm Warning | OAX | Montgomery | 21 min |
| Mar 6, 5:53 PM CST | Severe Thunderstorm Warning | DMX | Adams, Cass, Ringgold, Taylor, Union | 52 min |
| Mar 6, 6:03 PM CST | Severe Thunderstorm Warning | DMX | Adair, Boone, Cass, Dallas, Greene, Guthrie and 1 more | 42 min |
| Mar 6, 6:09 PM CST | Severe Thunderstorm Warning | DMX | Franklin, Hamilton, Hardin, Wright | 51 min |
| Mar 6, 6:30 PM CST | Severe Thunderstorm Warning | DMX | Adair, Boone, Dallas, Madison, Polk, Story and 1 more | 45 min |
| Mar 6, 6:31 PM CST | Severe Thunderstorm Warning | DMX | Cerro Gordo | 29 min |
| Mar 6, 6:36 PM CST | Severe Thunderstorm Warning | ARX | Floyd, Mitchell | 54 min |
| Mar 6, 6:39 PM CST | Severe Thunderstorm Warning | DMX | Clarke, Union | 51 min |
| Mar 6, 7:07 PM CST | Severe Thunderstorm Warning | DMX | Jasper, Marshall, Polk, Story | 53 min |
| Mar 6, 7:07 PM CST | Severe Thunderstorm Warning | DMX | Butler, Franklin, Grundy, Hardin, Marshall | 37 min |
| Mar 6, 7:12 PM CST | Severe Thunderstorm Warning | DMX | Marion, Warren | 48 min |
| Mar 6, 7:13 PM CST | Severe Thunderstorm Warning | ARX | Chickasaw, Howard, Winneshiek | 62 min |
| Mar 6, 7:21 PM CST | Severe Thunderstorm Warning | DMX | Clarke, Lucas, Monroe | 54 min |
| Mar 6, 7:31 PM CST | Severe Thunderstorm Warning | DMX | Decatur, Wayne | 59 min |
| Mar 6, 7:32 PM CST | Severe Thunderstorm Warning | DMX | Black Hawk, Bremer, Butler, Grundy | 58 min |
| Mar 6, 7:40 PM CST | Severe Thunderstorm Warning | DMX | Jasper, Marshall, Poweshiek, Tama | 54 min |
| Mar 6, 7:51 PM CST | Severe Thunderstorm Warning | DMX | Mahaska, Marion | 54 min |
| Mar 6, 8:02 PM CST | Severe Thunderstorm Warning | DVN | Benton, Buchanan, Iowa | 58 min |
| Mar 6, 8:04 PM CST | Severe Thunderstorm Warning | DVN | Keokuk | 56 min |
| Mar 6, 8:08 PM CST | Severe Thunderstorm Warning | DMX | Appanoose, Lucas, Monroe, Wayne | 35 min |
| Mar 6, 8:29 PM CST | Severe Thunderstorm Warning | DVN | Delaware, Johnson, Linn | 61 min |
| Mar 6, 8:38 PM CST | Severe Thunderstorm Warning | DMX | Appanoose, Davis, Monroe, Wapello | 41 min |
| Mar 6, 8:46 PM CST | Severe Thunderstorm Warning | DVN | Keokuk, Washington | 74 min |
| Mar 6, 8:54 PM CST | Severe Thunderstorm Warning | DVN | Jefferson, Van Buren | 81 min |
| Mar 6, 9:05 PM CST | Severe Thunderstorm Warning | DVN | Cedar, Jones | 55 min |
| Mar 6, 9:12 PM CST | Severe Thunderstorm Warning | ARX | Clayton | 63 min |
| Mar 6, 9:19 PM CST | Severe Thunderstorm Warning | DVN | Dubuque | 56 min |
| Mar 6, 9:28 PM CST | Severe Thunderstorm Warning | DVN | Johnson | 47 min |
| Mar 6, 9:31 PM CST | Severe Thunderstorm Warning | DVN | Des Moines, Henry, Lee, Louisa, Muscatine | 74 min |
| Mar 6, 9:42 PM CST | Severe Thunderstorm Warning | DVN | Jackson | 63 min |
| Mar 6, 9:49 PM CST | Severe Thunderstorm Warning | DVN | Clinton | 71 min |
| Mar 6, 9:52 PM CST | Severe Thunderstorm Warning | DVN | Clinton, Scott | 83 min |
| Mar 6, 10:04 PM CST | Severe Thunderstorm Warning | DVN | Cedar | 44 min |
| Mar 6, 10:26 PM CST | Severe Thunderstorm Warning | DVN | Clinton, Scott | 49 min |
| Mar 23, 10:44 AM CDT | Severe Thunderstorm Warning | FSD | Plymouth, Sioux | 16 min |
| Mar 23, 11:19 AM CDT | Severe Thunderstorm Warning | FSD | Cherokee, Clay, O'Brien, Plymouth, Sioux | 26 min |
| Mar 23, 1:23 PM CDT | Severe Thunderstorm Warning | DMX | Hancock, Humboldt, Kossuth, Wright | 25 min |
| Mar 23, 2:05 PM CDT | Severe Thunderstorm Warning | DMX | Butler, Cerro Gordo, Franklin | 25 min |
| Mar 23, 2:51 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Bremer, Butler | 39 min |
| Mar 23, 3:18 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Bremer | 25 min |
| Mar 23, 3:33 PM CDT | Severe Thunderstorm Warning | ARX | Fayette | 27 min |
| Mar 23, 3:53 PM CDT | Severe Thunderstorm Warning | ARX | Clayton, Fayette | 37 min |
| Mar 23, 4:15 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Worth | 30 min |
| Mar 23, 4:19 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo | 26 min |
| Mar 23, 4:26 PM CDT | Severe Thunderstorm Warning | ARX | Clayton | 49 min |
| Mar 23, 4:42 PM CDT | Severe Thunderstorm Warning | ARX | Clayton | 33 min |
| Apr 9, 8:30 PM CDT | Severe Thunderstorm Warning | DMX | Hancock, Humboldt, Wright | 45 min |
| Apr 9, 8:57 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Hancock, Worth | 48 min |
| Apr 9, 9:20 PM CDT | Severe Thunderstorm Warning | ARX | Mitchell | 55 min |
| Apr 9, 9:47 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills | 43 min |
| Apr 9, 9:51 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Worth | 9 min |
| Apr 9, 9:57 PM CDT | Severe Thunderstorm Warning | ARX | Chickasaw, Floyd, Howard, Mitchell | 48 min |
| Apr 9, 10:25 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Worth | 23 min |
| Apr 9, 10:57 PM CDT | Severe Thunderstorm Warning | DMX | Ringgold, Taylor, Union | 48 min |
| Apr 9, 11:34 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Decatur, Madison, Ringgold, Union, Warren | 29 min |
| Apr 10, 12:00 AM CDT | Severe Thunderstorm Warning | DMX | Clarke, Lucas, Marion, Warren | 30 min |
| Apr 10, 12:22 AM CDT | Severe Thunderstorm Warning | DMX | Jasper, Lucas, Mahaska, Marion, Warren | 23 min |
| Apr 10, 12:43 AM CDT | Severe Thunderstorm Warning | DMX | Mahaska, Marion, Poweshiek | 36 min |
| Apr 10, 1:43 AM CDT | Severe Thunderstorm Warning | DVN | Johnson | 32 min |
| Apr 10, 1:57 AM CDT | Severe Thunderstorm Warning | DVN | Jones, Linn | 33 min |
| Apr 10, 4:17 AM CDT | Severe Thunderstorm Warning | DVN | Des Moines | 43 min |
| Apr 15, 4:15 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Sac | 45 min |
| Apr 15, 4:39 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills | 36 min |
| Apr 15, 4:45 PM CDT | Severe Thunderstorm Warning | OAX | Fremont | 30 min |
| Apr 15, 4:54 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Pocahontas, Sac | 51 min |
| Apr 15, 4:58 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Webster | 47 min |
| Apr 15, 5:21 PM CDT | Severe Thunderstorm Warning | OAX | Fremont | 24 min |
| Apr 15, 5:26 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Johnson, Muscatine, Washington | 49 min |
| Apr 15, 5:33 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Lucas, Marion, Warren | 57 min |
| Apr 15, 5:43 PM CDT | Severe Thunderstorm Warning | OAX | Fremont | 32 min |
| Apr 15, 5:49 PM CDT | Severe Thunderstorm Warning | DMX | Grundy, Hardin, Marshall, Story | 56 min |
| Apr 15, 6:01 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Johnson, Muscatine, Washington | 44 min |
| Apr 15, 6:08 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Clinton, Scott | 67 min |
| Apr 15, 6:16 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Page | 29 min |
| Apr 15, 6:29 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Grundy, Marshall, Tama | 61 min |
| Apr 15, 6:46 PM CDT | Severe Thunderstorm Warning | OAX | Fremont | 29 min |
| Apr 15, 6:58 PM CDT | Severe Thunderstorm Warning | DVN | Iowa, Keokuk, Washington | 24 min |
| Apr 15, 7:00 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth | 45 min |
| Apr 15, 7:02 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Tama | 58 min |
| Apr 15, 7:03 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Scott | 43 min |
| Apr 15, 7:04 PM CDT | Severe Thunderstorm Warning | DMX | Dallas | 28 min |
| Apr 15, 7:07 PM CDT | Severe Thunderstorm Warning | DMX | Marion, Warren | 53 min |
| Apr 15, 7:14 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Buchanan | 61 min |
| Apr 15, 7:26 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Poweshiek, Tama | 64 min |
| Apr 15, 7:36 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth | 39 min |
| Apr 15, 7:46 PM CDT | Severe Thunderstorm Warning | DMX | Lucas, Marion, Warren | 44 min |
| Apr 15, 7:49 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Dallas, Guthrie | 43 min |
| Apr 15, 8:00 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Linn | 60 min |
| Apr 15, 8:09 PM CDT | Severe Thunderstorm Warning | DMX | Mahaska, Poweshiek | 22 min |
| Apr 15, 8:09 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, Ida, Plymouth, Woodbury | 51 min |
| Apr 15, 8:12 PM CDT | Severe Thunderstorm Warning | OAX | Harrison | 33 min |
| Apr 15, 8:45 PM CDT | Severe Thunderstorm Warning | OAX | Harrison | 30 min |
| Apr 15, 8:52 PM CDT | Severe Thunderstorm Warning | FSD | Ida, Woodbury | 24 min |
| Apr 15, 8:58 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Jackson, Jones | 43 min |
| Apr 15, 9:14 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Shelby | 46 min |
| Apr 15, 10:23 PM CDT | Severe Thunderstorm Warning | DMX | Marion, Warren | 52 min |
| Apr 15, 10:43 PM CDT | Severe Thunderstorm Warning | DMX | Mahaska | 47 min |
| Apr 15, 11:14 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marion | 20 min |
| Apr 16, 12:00 AM CDT | Severe Thunderstorm Warning | DMX | Mahaska, Marion | 30 min |
| Apr 19, 6:40 AM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 20 min |
| Apr 19, 7:18 PM CDT | Severe Thunderstorm Warning | DMX | Crawford | 31 min |
| Apr 19, 7:28 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Shelby | 32 min |
| Apr 19, 7:37 PM CDT | Severe Thunderstorm Warning | DMX | Humboldt, Pocahontas, Webster | 20 min |
| Apr 19, 7:37 PM CDT | Severe Thunderstorm Warning | DMX | Carroll | 53 min |
| Apr 19, 8:14 PM CDT | Severe Thunderstorm Warning | DMX | Audubon, Carroll, Greene, Guthrie | 46 min |
| Apr 19, 8:22 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Webster | 38 min |
| Apr 19, 8:29 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Greene, Webster | 46 min |
| Apr 19, 8:45 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Cass | 25 min |
| Apr 19, 9:58 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Madison | 47 min |
| Apr 19, 10:18 PM CDT | Severe Thunderstorm Warning | DMX | Marshall, Story | 42 min |
| May 8, 2:58 AM CDT | Severe Thunderstorm Warning | DMX | Crawford | 32 min |
| May 8, 8:41 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Hancock | 49 min |
| May 8, 9:28 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo | 47 min |
| May 10, 11:32 AM CDT | Severe Thunderstorm Warning | DMX | Adair, Madison | 28 min |
| May 10, 12:11 PM CDT | Severe Thunderstorm Warning | DMX | Madison, Warren | 34 min |
| May 10, 12:13 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Decatur, Ringgold, Union | 47 min |
| May 10, 12:53 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Lucas | 37 min |
| May 10, 1:17 PM CDT | Severe Thunderstorm Warning | DMX | Lucas, Monroe | 43 min |
| May 10, 1:47 PM CDT | Severe Thunderstorm Warning | DVN | Jefferson, Van Buren | 43 min |
| May 10, 1:50 PM CDT | Severe Thunderstorm Warning | DMX | Davis | 10 min |
| May 10, 2:48 PM CDT | Severe Thunderstorm Warning | DVN | Jefferson, Van Buren | 42 min |
| May 10, 2:52 PM CDT | Severe Thunderstorm Warning | DVN | Jefferson, Van Buren | 7 min |
| May 10, 3:13 PM CDT | Severe Thunderstorm Warning | DVN | Jefferson, Van Buren | 33 min |
| May 10, 3:35 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Henry, Lee, Van Buren | 55 min |
| May 15, 12:58 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Greene, Hamilton, Webster | 47 min |
| May 15, 3:42 PM CDT | Severe Thunderstorm Warning | DMX | Worth | 18 min |
| May 15, 4:20 PM CDT | Severe Thunderstorm Warning | DMX | Hancock, Kossuth | 40 min |
| May 15, 4:53 PM CDT | Severe Thunderstorm Warning | DMX | Humboldt, Kossuth, Pocahontas | 27 min |
| May 15, 4:58 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Hancock | 23 min |
| May 15, 5:19 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Franklin, Hancock, Humboldt, Wright | 41 min |
| May 15, 5:40 PM CDT | Severe Thunderstorm Warning | ARX | Chickasaw, Floyd, Howard, Mitchell | 65 min |
| May 15, 5:55 PM CDT | Severe Thunderstorm Warning | ARX | Winneshiek | 50 min |
| May 15, 5:58 PM CDT | Severe Thunderstorm Warning | DMX | Butler, Cerro Gordo, Franklin, Wright | 47 min |
| May 15, 6:31 PM CDT | Severe Thunderstorm Warning | DMX | Bremer, Butler | 44 min |
| May 15, 6:40 PM CDT | Severe Thunderstorm Warning | ARX | Allamakee, Chickasaw, Fayette, Winneshiek | 65 min |
| May 15, 6:41 PM CDT | Severe Thunderstorm Warning | DMX | Butler, Franklin | 34 min |
| May 15, 7:09 PM CDT | Severe Thunderstorm Warning | ARX | Clayton | 51 min |
| May 15, 7:14 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Bremer, Butler | 45 min |
| May 15, 7:27 PM CDT | Severe Thunderstorm Warning | ARX | Allamakee, Clayton | 48 min |
| May 15, 7:52 PM CDT | Severe Thunderstorm Warning | DVN | Dubuque, Jackson | 38 min |
| May 15, 8:29 PM CDT | Severe Thunderstorm Warning | DVN | Jackson | 76 min |
| May 15, 11:04 PM CDT | Severe Thunderstorm Warning | DMX | Hancock, Kossuth, Winnebago | 26 min |
| May 15, 11:29 PM CDT | Severe Thunderstorm Warning | DMX | Kossuth, Winnebago | 46 min |
| May 16, 4:29 AM CDT | Severe Thunderstorm Warning | FSD | Buena Vista, Clay, Dickinson | 31 min |
| May 16, 6:15 PM CDT | Severe Thunderstorm Warning | OAX | Harrison | 45 min |
| May 16, 6:18 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Mills, Pottawattamie | 42 min |
| May 16, 6:37 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Monona, Pottawattamie, Shelby | 38 min |
| May 16, 6:43 PM CDT | Severe Thunderstorm Warning | OAX | Mills, Montgomery, Pottawattamie | 47 min |
| May 16, 7:02 PM CDT | Severe Thunderstorm Warning | DMX | Crawford | 43 min |
| May 16, 7:07 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Monona | 41 min |
| May 16, 7:10 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Shelby | 65 min |
| May 16, 7:18 PM CDT | Severe Thunderstorm Warning | OAX | Mills, Montgomery, Pottawattamie | 57 min |
| May 16, 7:21 PM CDT | Severe Thunderstorm Warning | OAX | Mills | 24 min |
| May 16, 7:41 PM CDT | Severe Thunderstorm Warning | DMX | Audubon, Carroll, Crawford, Sac | 49 min |
| May 16, 7:43 PM CDT | Severe Thunderstorm Warning | FSD | Ida | 33 min |
| May 16, 7:53 PM CDT | Severe Thunderstorm Warning | DMX | Cass | 37 min |
| May 16, 8:15 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Carroll, Greene, Sac, Webster | 45 min |
| May 16, 8:18 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Pocahontas, Sac | 42 min |
| May 16, 8:22 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Audubon, Carroll, Cass, Dallas, Greene and 1 more | 38 min |
| May 16, 8:22 PM CDT | Severe Thunderstorm Warning | FSD | Buena Vista | 23 min |
| May 16, 8:48 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Hamilton, Humboldt, Webster, Wright | 42 min |
| May 16, 8:50 PM CDT | Severe Thunderstorm Warning | DMX | Hancock, Humboldt, Kossuth, Palo Alto, Pocahontas | 40 min |
| May 16, 8:57 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Dallas, Greene, Guthrie | 33 min |
| May 16, 9:13 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills | 47 min |
| May 16, 9:18 PM CDT | Severe Thunderstorm Warning | DMX | Audubon, Carroll, Greene, Guthrie | 22 min |
| May 16, 9:19 PM CDT | Severe Thunderstorm Warning | DMX | Hancock, Kossuth, Winnebago, Worth | 56 min |
| May 16, 9:26 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Franklin, Hancock, Humboldt, Kossuth, Webster and 1 more | 49 min |
| May 16, 9:30 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Dallas, Polk, Story | 15 min |
| May 16, 9:42 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Hamilton, Hardin, Marshall, Story | 34 min |
| May 16, 9:49 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Franklin, Hancock, Worth | 26 min |
| May 16, 9:53 PM CDT | Severe Thunderstorm Warning | OAX | Mills, Montgomery, Pottawattamie | 37 min |
| May 16, 10:13 PM CDT | Severe Thunderstorm Warning | DMX | Grundy, Hamilton, Hardin, Marshall, Story | 29 min |
| May 16, 10:15 PM CDT | Severe Thunderstorm Warning | DMX | Butler, Cerro Gordo, Franklin, Worth | 33 min |
| May 16, 10:24 PM CDT | Severe Thunderstorm Warning | ARX | Floyd, Mitchell | 51 min |
| May 16, 10:32 PM CDT | Severe Thunderstorm Warning | OAX | Page | 28 min |
| May 16, 10:40 PM CDT | Severe Thunderstorm Warning | DMX | Butler, Grundy, Hardin | 22 min |
| May 16, 10:46 PM CDT | Severe Thunderstorm Warning | DMX | Adams, Taylor | 44 min |
| May 16, 10:51 PM CDT | Severe Thunderstorm Warning | ARX | Chickasaw, Howard | 54 min |
| May 16, 11:19 PM CDT | Severe Thunderstorm Warning | DMX | Ringgold, Union | 26 min |
| May 17, 2:34 PM CDT | Severe Thunderstorm Warning | FSD | Lyon | 26 min |
| May 17, 2:42 PM CDT | Severe Thunderstorm Warning | DMX | Dallas, Madison | 28 min |
| May 17, 3:02 PM CDT | Severe Thunderstorm Warning | DMX | Dallas, Polk | 43 min |
| May 17, 3:14 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Bremer | 27 min |
| May 17, 3:16 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Buchanan, Linn | 43 min |
| May 17, 3:28 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Story | 35 min |
| May 17, 3:29 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Clarke, Madison, Union | 29 min |
| May 17, 3:36 PM CDT | Severe Thunderstorm Warning | DVN | Delaware, Dubuque, Jones, Linn | 54 min |
| May 17, 3:37 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Guthrie | 23 min |
| May 17, 3:38 PM CDT | Severe Thunderstorm Warning | ARX | Chickasaw, Fayette, Howard, Winneshiek | 52 min |
| May 17, 3:45 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Henry, Lee, Van Buren | 30 min |
| May 17, 3:46 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Audubon, Carroll, Cass, Clarke, Dallas and 6 more | 44 min |
| May 17, 3:47 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Decatur, Lucas, Marion, Union, Warren and 1 more | 43 min |
| May 17, 4:01 PM CDT | Severe Thunderstorm Warning | ARX | Clayton, Fayette | 44 min |
| May 17, 4:17 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Dallas, Greene, Guthrie, Jasper, Madison and 4 more | 43 min |
| May 17, 4:22 PM CDT | Severe Thunderstorm Warning | ARX | Allamakee | 38 min |
| May 17, 4:23 PM CDT | Severe Thunderstorm Warning | DVN | Iowa, Johnson, Washington | 44 min |
| May 17, 4:26 PM CDT | Severe Thunderstorm Warning | DMX | Kossuth | 22 min |
| May 17, 4:27 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Jasper, Lucas, Mahaska, Marion, Monroe and 4 more | 63 min |
| May 17, 4:53 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Grundy, Hamilton, Hardin, Jasper, Marshall and 3 more | 67 min |
| May 17, 5:03 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Iowa, Keokuk | 57 min |
| May 17, 5:11 PM CDT | Severe Thunderstorm Warning | DMX | Humboldt, Kossuth, Webster | 49 min |
| May 17, 5:16 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Franklin, Hamilton, Hancock, Hardin, Wright | 59 min |
| May 17, 5:21 PM CDT | Severe Thunderstorm Warning | DMX | Davis, Wapello | 39 min |
| May 17, 5:24 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Clinton, Muscatine, Scott | 30 min |
| May 17, 5:32 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Bremer, Butler | 43 min |
| May 17, 5:39 PM CDT | Severe Thunderstorm Warning | DVN | Henry, Jefferson, Keokuk, Van Buren, Washington | 66 min |
| May 17, 5:50 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Buchanan, Delaware, Iowa, Johnson, Linn and 1 more | 55 min |
| May 17, 5:53 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Hancock, Kossuth, Winnebago, Worth | 34 min |
| May 17, 5:54 PM CDT | Severe Thunderstorm Warning | DVN | Jefferson, Van Buren | 51 min |
| May 17, 5:57 PM CDT | Severe Thunderstorm Warning | ARX | Floyd | 32 min |
| May 17, 6:01 PM CDT | Severe Thunderstorm Warning | DMX | Emmet | 8 min |
| May 17, 6:11 PM CDT | Severe Thunderstorm Warning | ARX | Chickasaw | 34 min |
| May 17, 6:16 PM CDT | Severe Thunderstorm Warning | ARX | Mitchell | 44 min |
| May 17, 6:16 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Bremer | 9 min |
| May 17, 6:23 PM CDT | Severe Thunderstorm Warning | ARX | Howard | 37 min |
| May 17, 6:31 PM CDT | Severe Thunderstorm Warning | DVN | Buchanan, Cedar, Clinton, Delaware, Dubuque, Jackson and 5 more | 59 min |
| May 17, 6:38 PM CDT | Severe Thunderstorm Warning | DVN | Henry, Louisa, Muscatine, Washington | 52 min |
| May 17, 6:41 PM CDT | Severe Thunderstorm Warning | ARX | Clayton, Fayette | 64 min |
| May 17, 6:44 PM CDT | Severe Thunderstorm Warning | ARX | Winneshiek | 46 min |
| May 17, 6:52 PM CDT | Severe Thunderstorm Warning | ARX | Howard | 10 min |
| May 17, 7:00 PM CDT | Severe Thunderstorm Warning | ARX | Allamakee, Clayton, Fayette, Winneshiek | 75 min |
| May 17, 7:14 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Clinton, Dubuque, Jackson, Jones, Muscatine and 1 more | 61 min |
| May 17, 7:30 PM CDT | Severe Thunderstorm Warning | DVN | Louisa, Muscatine, Scott | 45 min |
| May 17, 7:37 PM CDT | Severe Thunderstorm Warning | DVN | Scott | 38 min |
| May 17, 8:05 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Jackson | 55 min |
| May 17, 8:08 PM CDT | Severe Thunderstorm Warning | DVN | Muscatine, Scott | 67 min |
| May 22, 7:27 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Dallas, Guthrie, Madison | 48 min |
| May 27, 7:09 AM CDT | Severe Thunderstorm Warning | OAX | Fremont | 36 min |
| May 27, 9:04 AM CDT | Severe Thunderstorm Warning | DMX | Audubon, Cass | 28 min |
| May 27, 3:55 PM CDT | Severe Thunderstorm Warning | DMX | Mahaska, Poweshiek | 35 min |
| May 27, 4:27 PM CDT | Severe Thunderstorm Warning | DVN | Keokuk | 63 min |
| May 28, 7:33 PM CDT | Severe Thunderstorm Warning | FSD | Lyon, Osceola | 27 min |
| May 28, 7:56 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Dickinson, Lyon, O'Brien, Osceola | 34 min |
| Jun 3, 6:17 PM CDT | Severe Thunderstorm Warning | FSD | O'Brien, Sioux | 13 min |
| Jun 12, 10:28 AM CDT | Severe Thunderstorm Warning | FSD | Lyon | 47 min |
| Jun 12, 11:09 AM CDT | Severe Thunderstorm Warning | FSD | Lyon | 36 min |
| Jun 12, 11:23 AM CDT | Severe Thunderstorm Warning | DMX | Emmet, Kossuth, Palo Alto | 67 min |
| Jun 12, 12:08 PM CDT | Severe Thunderstorm Warning | FSD | Sioux | 38 min |
| Jun 12, 3:36 PM CDT | Severe Thunderstorm Warning | DMX | Carroll, Greene, Guthrie | 39 min |
| Jun 12, 6:44 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 31 min |
| Jun 13, 8:41 PM CDT | Severe Thunderstorm Warning | FSD | Lyon | 34 min |
| Jun 13, 8:43 PM CDT | Severe Thunderstorm Warning | FSD | Lyon, Sioux | 47 min |
| Jun 13, 8:58 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Monona | 32 min |
| Jun 13, 9:10 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth, Sioux | 50 min |
| Jun 13, 9:13 PM CDT | Severe Thunderstorm Warning | FSD | Lyon, Sioux | 47 min |
| Jun 13, 9:16 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, Plymouth, Woodbury | 44 min |
| Jun 13, 9:40 PM CDT | Severe Thunderstorm Warning | FSD | Sioux | 35 min |
| Jun 13, 9:43 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, O'Brien, Plymouth, Sioux | 47 min |
| Jun 13, 9:51 PM CDT | Severe Thunderstorm Warning | FSD | Buena Vista, Cherokee, Ida, Woodbury | 24 min |
| Jun 13, 9:58 PM CDT | Severe Thunderstorm Warning | FSD | Lyon, O'Brien, Osceola, Sioux | 47 min |
| Jun 13, 10:15 PM CDT | Severe Thunderstorm Warning | FSD | Buena Vista, Cherokee, Clay, Dickinson, Ida, O'Brien and 1 more | 45 min |
| Jun 14, 6:39 AM CDT | Severe Thunderstorm Warning | DMX | Adair, Audubon, Cass, Guthrie | 51 min |
| Jun 14, 7:16 AM CDT | Severe Thunderstorm Warning | OAX | Fremont | 29 min |
| Jun 14, 7:44 AM CDT | Severe Thunderstorm Warning | OAX | Fremont, Page | 31 min |
| Jun 14, 8:15 AM CDT | Severe Thunderstorm Warning | OAX | Montgomery, Page | 30 min |
| Jun 14, 9:14 AM CDT | Severe Thunderstorm Warning | DMX | Dallas, Polk | 31 min |
| Jun 14, 1:57 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Louisa | 48 min |
| Jun 14, 3:56 PM CDT | Severe Thunderstorm Warning | DVN | Lee | 49 min |
| Jun 14, 4:40 PM CDT | Severe Thunderstorm Warning | DVN | Lee | 29 min |
| Jun 14, 6:03 PM CDT | Severe Thunderstorm Warning | DVN | Dubuque | 20 min |
| Jun 15, 5:26 PM CDT | Severe Thunderstorm Warning | DMX | Butler, Franklin, Grundy, Hardin | 49 min |
| Jun 15, 5:32 PM CDT | Severe Thunderstorm Warning | DMX | Butler, Franklin | 43 min |
| Jun 15, 6:00 PM CDT | Severe Thunderstorm Warning | DMX | Franklin | 15 min |
| Jun 15, 6:06 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Butler, Grundy | 39 min |
| Jun 15, 6:12 PM CDT | Severe Thunderstorm Warning | DMX | Butler, Franklin | 33 min |
| Jun 15, 6:14 PM CDT | Severe Thunderstorm Warning | DMX | Bremer, Butler | 27 min |
| Jun 15, 6:17 PM CDT | Severe Thunderstorm Warning | OAX | Fremont | 28 min |
| Jun 15, 6:22 PM CDT | Severe Thunderstorm Warning | OAX | Mills, Pottawattamie | 23 min |
| Jun 15, 6:32 PM CDT | Severe Thunderstorm Warning | OAX | Mills, Montgomery, Pottawattamie | 28 min |
| Jun 15, 6:36 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Bremer, Butler | 19 min |
| Jun 15, 6:37 PM CDT | Severe Thunderstorm Warning | ARX | Chickasaw | 23 min |
| Jun 15, 6:40 PM CDT | Severe Thunderstorm Warning | DMX | Bremer | 35 min |
| Jun 15, 6:44 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk | 46 min |
| Jun 15, 6:50 PM CDT | Severe Thunderstorm Warning | DMX | Cass | 40 min |
| Jun 15, 6:52 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Butler, Grundy | 23 min |
| Jun 15, 6:52 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Page | 23 min |
| Jun 15, 6:54 PM CDT | Severe Thunderstorm Warning | OAX | Montgomery, Pottawattamie | 21 min |
| Jun 15, 7:05 PM CDT | Severe Thunderstorm Warning | ARX | Chickasaw, Fayette | 41 min |
| Jun 15, 7:10 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Page | 35 min |
| Jun 15, 7:16 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Bremer, Butler | 40 min |
| Jun 15, 7:16 PM CDT | Severe Thunderstorm Warning | OAX | Montgomery, Page | 29 min |
| Jun 15, 7:17 PM CDT | Severe Thunderstorm Warning | DVN | Buchanan | 58 min |
| Jun 15, 7:22 PM CDT | Severe Thunderstorm Warning | OAX | Page | 23 min |
| Jun 15, 7:24 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Cass | 21 min |
| Jun 15, 7:28 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk | 47 min |
| Jun 15, 7:49 PM CDT | Severe Thunderstorm Warning | OAX | Fremont | 26 min |
| Jun 15, 7:51 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Buchanan, Delaware, Linn | 54 min |
| Jun 15, 7:52 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Bremer | 38 min |
| Jun 15, 7:55 PM CDT | Severe Thunderstorm Warning | OAX | Page | 35 min |
| Jun 15, 8:10 PM CDT | Severe Thunderstorm Warning | OAX | Fremont | 35 min |
| Jun 15, 8:11 PM CDT | Severe Thunderstorm Warning | DVN | Delaware, Dubuque, Jones | 49 min |
| Jun 15, 8:16 PM CDT | Severe Thunderstorm Warning | DVN | Buchanan | 44 min |
| Jun 15, 8:23 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Warren | 37 min |
| Jun 15, 8:25 PM CDT | Severe Thunderstorm Warning | OAX | Page | 35 min |
| Jun 15, 8:28 PM CDT | Severe Thunderstorm Warning | DVN | Jones, Linn | 62 min |
| Jun 15, 8:39 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Bremer | 21 min |
| Jun 15, 8:42 PM CDT | Severe Thunderstorm Warning | OAX | Fremont | 33 min |
| Jun 15, 8:43 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Lucas, Warren | 37 min |
| Jun 15, 8:45 PM CDT | Severe Thunderstorm Warning | DVN | Buchanan, Delaware, Linn | 45 min |
| Jun 15, 8:50 PM CDT | Severe Thunderstorm Warning | OAX | Fremont | 25 min |
| Jun 15, 8:55 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Dallas, Guthrie, Madison | 50 min |
| Jun 15, 8:55 PM CDT | Severe Thunderstorm Warning | OAX | Page | 35 min |
| Jun 15, 8:58 PM CDT | Severe Thunderstorm Warning | DMX | Lucas, Marion, Monroe | 47 min |
| Jun 15, 8:58 PM CDT | Severe Thunderstorm Warning | DVN | Buchanan | 47 min |
| Jun 15, 9:03 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Clinton, Johnson, Jones, Linn | 57 min |
| Jun 15, 9:17 PM CDT | Severe Thunderstorm Warning | DMX | Dallas, Madison | 28 min |
| Jun 15, 9:19 PM CDT | Severe Thunderstorm Warning | DMX | Lucas, Marion, Monroe, Warren | 27 min |
| Jun 15, 9:36 PM CDT | Severe Thunderstorm Warning | DMX | Dallas, Madison, Polk, Warren | 39 min |
| Jun 15, 9:44 PM CDT | Severe Thunderstorm Warning | DMX | Mahaska, Marion | 46 min |
| Jun 15, 9:44 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Muscatine, Scott | 46 min |
| Jun 15, 9:45 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Adams, Cass, Union | 60 min |
| Jun 15, 10:38 PM CDT | Severe Thunderstorm Warning | DMX | Marion | 25 min |
| Jun 15, 10:40 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose | 35 min |
| Jun 15, 10:50 PM CDT | Severe Thunderstorm Warning | DMX | Dallas, Polk | 25 min |
| Jun 15, 10:51 PM CDT | Severe Thunderstorm Warning | DVN | Johnson, Louisa, Washington | 39 min |
| Jun 15, 10:57 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose | 37 min |
| Jun 15, 11:01 PM CDT | Severe Thunderstorm Warning | DVN | Jackson, Jones | 26 min |
| Jun 15, 11:07 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Polk | 23 min |
| Jun 15, 11:23 PM CDT | Severe Thunderstorm Warning | DMX | Jasper | 52 min |
| Jun 15, 11:54 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Poweshiek | 36 min |
| Jun 15, 11:55 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Iowa, Johnson, Linn | 27 min |
| Jun 16, 1:12 AM CDT | Severe Thunderstorm Warning | DVN | Lee | 63 min |
| Jun 16, 3:39 PM CDT | Severe Thunderstorm Warning | DMX | Emmet | 21 min |
| Jun 16, 4:19 PM CDT | Severe Thunderstorm Warning | DMX | Kossuth, Winnebago | 41 min |
| Jun 16, 6:18 PM CDT | Severe Thunderstorm Warning | OAX | Monona | 42 min |
| Jun 16, 6:47 PM CDT | Severe Thunderstorm Warning | OAX | Harrison | 28 min |
| Jun 16, 7:03 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Pocahontas | 27 min |
| Jun 16, 7:07 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Monona, Pottawattamie, Shelby | 38 min |
| Jun 16, 7:30 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Humboldt, Pocahontas, Webster | 45 min |
| Jun 16, 7:30 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Mills, Pottawattamie | 30 min |
| Jun 16, 7:49 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Harrison, Mills, Pottawattamie | 26 min |
| Jun 16, 8:14 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Harrison, Mills, Montgomery, Page, Pottawattamie and 1 more | 31 min |
| Jun 16, 8:31 PM CDT | Severe Thunderstorm Warning | DMX | Hamilton, Webster | 44 min |
| Jun 16, 8:36 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Cass | 54 min |
| Jun 16, 8:43 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills, Montgomery, Page, Pottawattamie, Shelby | 32 min |
| Jun 16, 9:05 PM CDT | Severe Thunderstorm Warning | DMX | Adams, Taylor | 55 min |
| Jun 16, 9:13 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Montgomery, Page | 32 min |
| Jun 16, 9:27 PM CDT | Severe Thunderstorm Warning | OAX | Fremont | 48 min |
| Jun 16, 9:37 PM CDT | Severe Thunderstorm Warning | DMX | Adams, Ringgold, Taylor, Union | 53 min |
| Jun 16, 9:38 PM CDT | Severe Thunderstorm Warning | DMX | Hardin, Marshall, Story | 37 min |
| Jun 16, 10:05 PM CDT | Severe Thunderstorm Warning | DMX | Marshall | 25 min |
| Jun 16, 10:19 PM CDT | Severe Thunderstorm Warning | DMX | Decatur, Ringgold | 56 min |
| Jun 16, 10:26 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marshall, Poweshiek, Tama | 34 min |
| Jun 16, 11:23 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Linn | 45 min |
| Jun 17, 5:11 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Johnson, Muscatine, Scott, Washington | 49 min |
| Jun 17, 5:29 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Davis, Lucas, Monroe, Wapello, Wayne | 14 min |
| Jun 17, 5:36 PM CDT | Severe Thunderstorm Warning | DVN | Louisa, Muscatine | 39 min |
| Jun 17, 5:39 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Davis, Wayne | 37 min |
| Jun 17, 6:05 PM CDT | Severe Thunderstorm Warning | DVN | Scott | 40 min |
| Jun 17, 6:13 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Davis | 32 min |
| Jun 17, 6:19 PM CDT | Severe Thunderstorm Warning | DMX | Monroe, Wapello | 14 min |
| Jun 17, 6:30 PM CDT | Severe Thunderstorm Warning | DMX | Mahaska, Monroe, Wapello | 20 min |
| Jun 17, 6:33 PM CDT | Severe Thunderstorm Warning | DVN | Keokuk, Washington | 42 min |
| Jun 17, 6:45 PM CDT | Severe Thunderstorm Warning | DMX | Davis | 15 min |
| Jun 17, 7:27 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Henry, Lee, Van Buren | 48 min |
| Jun 21, 10:12 PM CDT | Severe Thunderstorm Warning | DMX | Emmet, Palo Alto | 30 min |
| Jun 21, 10:17 PM CDT | Severe Thunderstorm Warning | FSD | Buena Vista, Clay | 13 min |
| Jun 21, 10:47 PM CDT | Severe Thunderstorm Warning | FSD | Osceola | 28 min |
| Jun 21, 11:33 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Dickinson | 27 min |
| Jun 22, 7:30 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Hancock | 45 min |
| Jun 22, 8:22 PM CDT | Severe Thunderstorm Warning | DMX | Butler, Cerro Gordo, Franklin | 38 min |
| Jun 22, 8:36 PM CDT | Severe Thunderstorm Warning | ARX | Floyd | 39 min |
| Jun 22, 8:55 PM CDT | Severe Thunderstorm Warning | DMX | Butler, Franklin | 65 min |
| Jun 22, 9:08 PM CDT | Severe Thunderstorm Warning | ARX | Chickasaw | 52 min |
| Jun 22, 9:49 PM CDT | Severe Thunderstorm Warning | DMX | Dallas, Polk | 41 min |
| Jun 22, 9:55 PM CDT | Severe Thunderstorm Warning | DVN | Delaware | 27 min |
| Jun 22, 10:43 PM CDT | Severe Thunderstorm Warning | ARX | Fayette | 32 min |
| Jun 22, 10:44 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Polk | 46 min |
| Jun 22, 10:50 PM CDT | Severe Thunderstorm Warning | OAX | Mills | 25 min |
| Jun 22, 11:08 PM CDT | Severe Thunderstorm Warning | DMX | Marion, Polk, Warren | 37 min |
| Jun 27, 11:02 PM CDT | Severe Thunderstorm Warning | FSD | Lyon | 43 min |
| Jun 27, 11:39 PM CDT | Severe Thunderstorm Warning | FSD | Osceola | 51 min |
| Jun 28, 3:23 AM CDT | Severe Thunderstorm Warning | DMX | Boone, Dallas, Story | 30 min |
| Jun 28, 3:41 AM CDT | Severe Thunderstorm Warning | DMX | Dallas, Polk | 23 min |
| Jun 28, 2:23 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Humboldt, Pocahontas, Webster | 52 min |
| Jun 28, 3:06 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Humboldt, Pocahontas, Webster | 39 min |
| Jun 28, 3:17 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills, Montgomery, Page | 43 min |
| Jun 28, 3:40 PM CDT | Severe Thunderstorm Warning | DMX | Hamilton, Webster, Wright | 50 min |
| Jun 28, 3:49 PM CDT | Severe Thunderstorm Warning | DMX | Butler, Franklin | 41 min |
| Jun 28, 3:52 PM CDT | Severe Thunderstorm Warning | ARX | Chickasaw, Fayette, Winneshiek | 38 min |
| Jun 28, 4:20 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Madison | 40 min |
| Jun 28, 4:24 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Page | 36 min |
| Jun 28, 4:29 PM CDT | Severe Thunderstorm Warning | OAX | Fremont | 31 min |
| Jun 28, 4:33 PM CDT | Severe Thunderstorm Warning | DMX | Bremer, Butler | 42 min |
| Jun 28, 4:44 PM CDT | Severe Thunderstorm Warning | OAX | Page | 31 min |
| Jun 28, 4:49 PM CDT | Severe Thunderstorm Warning | DMX | Dallas, Madison, Polk, Warren | 41 min |
| Jun 28, 4:51 PM CDT | Severe Thunderstorm Warning | DMX | Franklin, Hamilton, Hardin, Webster, Wright | 39 min |
| Jun 28, 5:07 PM CDT | Severe Thunderstorm Warning | DMX | Hamilton, Hardin | 38 min |
| Jun 28, 5:09 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Page | 39 min |
| Jun 28, 5:11 PM CDT | Severe Thunderstorm Warning | ARX | Clayton | 64 min |
| Jun 28, 5:11 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marshall, Polk, Story | 49 min |
| Jun 28, 5:14 PM CDT | Severe Thunderstorm Warning | OAX | Montgomery, Page | 20 min |
| Jun 28, 5:24 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marion, Polk, Warren | 24 min |
| Jun 28, 5:25 PM CDT | Severe Thunderstorm Warning | DMX | Marshall, Story | 35 min |
| Jun 28, 5:35 PM CDT | Severe Thunderstorm Warning | DMX | Grundy, Hardin | 40 min |
| Jun 28, 5:36 PM CDT | Severe Thunderstorm Warning | ARX | Clayton | 54 min |
| Jun 28, 5:37 PM CDT | Severe Thunderstorm Warning | OAX | Page | 25 min |
| Jun 28, 5:39 PM CDT | Severe Thunderstorm Warning | DMX | Decatur, Ringgold, Taylor | 66 min |
| Jun 28, 5:52 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marshall, Polk, Story | 2 min |
| Jun 28, 6:19 PM CDT | Severe Thunderstorm Warning | ARX | Clayton | 26 min |
| Jun 28, 6:24 PM CDT | Severe Thunderstorm Warning | DVN | Delaware, Dubuque | 66 min |
| Jun 28, 6:29 PM CDT | Severe Thunderstorm Warning | DMX | Adams, Union | 22 min |
| Jun 28, 6:29 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Grundy, Tama | 46 min |
| Jun 28, 6:34 PM CDT | Severe Thunderstorm Warning | DVN | Delaware, Jones, Linn | 25 min |
| Jun 28, 6:36 PM CDT | Severe Thunderstorm Warning | DMX | Hardin | 39 min |
| Jun 28, 6:57 PM CDT | Severe Thunderstorm Warning | DMX | Butler, Franklin, Grundy, Hardin | 48 min |
| Jun 28, 7:02 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Buchanan, Linn | 43 min |
| Jun 28, 7:24 PM CDT | Severe Thunderstorm Warning | DVN | Dubuque, Jackson | 51 min |
| Jun 28, 7:28 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Clinton, Jackson, Jones | 38 min |
| Jun 28, 7:42 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Grundy, Tama | 48 min |
| Jun 28, 8:01 PM CDT | Severe Thunderstorm Warning | DVN | Jones, Linn | 23 min |
| Jun 28, 8:38 PM CDT | Severe Thunderstorm Warning | DMX | Ringgold, Taylor | 40 min |
| Jun 28, 9:12 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Linn | 48 min |
| Jun 28, 10:03 PM CDT | Severe Thunderstorm Warning | DVN | Lee | 42 min |
| Jun 29, 3:48 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth, Woodbury | 42 min |
| Jun 29, 4:08 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth | 52 min |
| Jun 29, 4:26 PM CDT | Severe Thunderstorm Warning | FSD | Woodbury | 49 min |
| Jun 29, 4:54 PM CDT | Severe Thunderstorm Warning | FSD | Sioux | 51 min |
| Jun 29, 5:10 PM CDT | Severe Thunderstorm Warning | FSD | Woodbury | 35 min |
| Jun 29, 5:11 PM CDT | Severe Thunderstorm Warning | DMX | Butler, Franklin | 49 min |
| Jun 29, 5:29 PM CDT | Severe Thunderstorm Warning | FSD | Clay | 33 min |
| Jun 29, 5:43 PM CDT | Severe Thunderstorm Warning | FSD | Lyon, Sioux | 18 min |
| Jun 29, 5:59 PM CDT | Severe Thunderstorm Warning | FSD | Ida, Woodbury | 22 min |
| Jun 29, 6:15 PM CDT | Severe Thunderstorm Warning | DMX | Crawford | 45 min |
| Jun 29, 6:16 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Monona | 29 min |
| Jun 29, 6:23 PM CDT | Severe Thunderstorm Warning | DMX | Palo Alto | 35 min |
| Jun 29, 6:27 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth, Sioux | 33 min |
| Jun 29, 6:36 PM CDT | Severe Thunderstorm Warning | DMX | Palo Alto | 20 min |
| Jun 29, 6:45 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Monona | 30 min |
| Jun 29, 7:03 PM CDT | Severe Thunderstorm Warning | DMX | Franklin, Wright | 42 min |
| Jun 29, 7:05 PM CDT | Severe Thunderstorm Warning | DMX | Carroll, Crawford | 40 min |
| Jun 29, 7:13 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Monona, Shelby | 32 min |
| Jun 29, 7:23 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Pottawattamie | 37 min |
| Jun 29, 7:31 PM CDT | Severe Thunderstorm Warning | DMX | Carroll | 44 min |
| Jun 29, 7:56 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Pottawattamie, Shelby | 34 min |
| Jun 29, 8:24 PM CDT | Severe Thunderstorm Warning | OAX | Harrison | 36 min |
| Jun 29, 8:54 PM CDT | Severe Thunderstorm Warning | DMX | Grundy, Hamilton, Hardin, Marshall, Story | 36 min |
| Jun 29, 9:02 PM CDT | Severe Thunderstorm Warning | DMX | Butler, Franklin | 28 min |
| Jun 29, 9:16 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Worth | 29 min |
| Jun 29, 9:16 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Pottawattamie | 29 min |
| Jun 29, 9:23 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marshall, Story, Tama | 22 min |
| Jun 29, 9:32 PM CDT | Severe Thunderstorm Warning | OAX | Mills, Pottawattamie | 28 min |
| Jun 29, 9:42 PM CDT | Severe Thunderstorm Warning | ARX | Mitchell | 33 min |
| Jun 29, 9:42 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marshall, Poweshiek, Tama | 33 min |
| Jun 29, 9:45 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Pottawattamie, Shelby | 30 min |
| Jun 29, 9:46 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Pottawattamie, Shelby | 29 min |
| Jun 29, 9:47 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Bremer | 28 min |
| Jun 29, 9:50 PM CDT | Severe Thunderstorm Warning | DMX | Tama | 25 min |
| Jun 29, 9:53 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Buchanan, Delaware, Linn | 37 min |
| Jun 29, 9:55 PM CDT | Severe Thunderstorm Warning | OAX | Mills, Pottawattamie | 35 min |
| Jun 29, 10:26 PM CDT | Severe Thunderstorm Warning | OAX | Mills, Pottawattamie | 34 min |
| Jun 29, 10:30 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Buchanan, Delaware, Jones, Linn | 45 min |
| Jun 29, 10:39 PM CDT | Severe Thunderstorm Warning | OAX | Montgomery, Pottawattamie | 36 min |
| Jun 29, 10:42 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills | 33 min |
| Jun 29, 10:58 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills | 32 min |
| Jun 29, 11:26 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills, Montgomery, Page | 34 min |
| Jun 29, 11:58 PM CDT | Severe Thunderstorm Warning | OAX | Page | 20 min |
| Jun 30, 12:00 AM CDT | Severe Thunderstorm Warning | OAX | Mills, Pottawattamie | 17 min |
| Jun 30, 6:34 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Monona | 26 min |
| Jul 3, 8:23 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, Plymouth | 34 min |
| Jul 4, 8:03 PM CDT | Severe Thunderstorm Warning | FSD | Dickinson, Osceola | 27 min |
| Jul 5, 7:34 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Lee | 22 min |
| Jul 5, 9:01 PM CDT | Severe Thunderstorm Warning | DVN | Jones | 44 min |
| Jul 5, 9:41 PM CDT | Severe Thunderstorm Warning | DVN | Linn | 37 min |
| Jul 9, 11:25 PM CDT | Severe Thunderstorm Warning | DMX | Winnebago, Worth | 50 min |
| Jul 10, 12:46 AM CDT | Severe Thunderstorm Warning | DMX | Hancock, Kossuth, Winnebago | 44 min |
| Jul 10, 12:50 AM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Hancock, Winnebago, Worth | 40 min |
| Jul 10, 1:28 AM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Franklin, Hancock, Winnebago, Wright | 47 min |
| Jul 10, 2:09 AM CDT | Severe Thunderstorm Warning | DMX | Butler, Franklin, Grundy, Hardin, Wright | 36 min |
| Jul 10, 2:42 AM CDT | Severe Thunderstorm Warning | DVN | Clinton, Dubuque, Jackson, Jones | 50 min |
| Jul 10, 2:44 AM CDT | Severe Thunderstorm Warning | DMX | Grundy, Hardin, Tama | 46 min |
| Jul 10, 4:48 AM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Louisa | 42 min |
| Jul 10, 5:15 AM CDT | Severe Thunderstorm Warning | DVN | Henry, Jefferson, Louisa, Washington | 27 min |
| Jul 10, 6:38 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Lee | 67 min |
| Jul 11, 5:40 AM CDT | Severe Thunderstorm Warning | DVN | Henry, Iowa, Jefferson, Johnson, Keokuk, Washington | 50 min |
| Jul 11, 9:44 PM CDT | Severe Thunderstorm Warning | ARX | Clayton | 61 min |
| Jul 11, 10:17 PM CDT | Severe Thunderstorm Warning | DVN | Delaware, Dubuque | 58 min |
| Jul 11, 11:52 PM CDT | Severe Thunderstorm Warning | DVN | Dubuque | 53 min |
| Jul 12, 12:37 AM CDT | Severe Thunderstorm Warning | DVN | Dubuque, Jackson | 52 min |
| Jul 12, 12:57 AM CDT | Severe Thunderstorm Warning | DVN | Jackson | 63 min |
| Jul 12, 9:18 AM CDT | Severe Thunderstorm Warning | ARX | Clayton | 42 min |
| Jul 12, 9:44 AM CDT | Severe Thunderstorm Warning | ARX | Clayton | 22 min |
| Jul 12, 3:40 PM CDT | Severe Thunderstorm Warning | DMX | Dallas, Guthrie | 27 min |
| Jul 12, 5:20 PM CDT | Severe Thunderstorm Warning | DMX | Marshall, Story | 25 min |
| Jul 12, 5:25 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Bremer | 30 min |
| Jul 12, 5:46 PM CDT | Severe Thunderstorm Warning | ARX | Fayette | 26 min |
| Jul 12, 7:27 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Johnson, Muscatine | 48 min |
| Jul 12, 8:06 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Clinton, Jackson, Jones | 39 min |
| Jul 19, 3:46 PM CDT | Severe Thunderstorm Warning | DMX | Emmet, Kossuth | 44 min |
| Jul 19, 4:00 PM CDT | Severe Thunderstorm Warning | DMX | Hancock, Kossuth, Winnebago | 45 min |
| Jul 19, 4:19 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Hancock, Winnebago, Worth | 56 min |
| Jul 19, 4:25 PM CDT | Severe Thunderstorm Warning | ARX | Floyd, Mitchell | 65 min |
| Jul 19, 4:57 PM CDT | Severe Thunderstorm Warning | ARX | Chickasaw, Howard, Winneshiek | 63 min |
| Jul 19, 5:22 PM CDT | Severe Thunderstorm Warning | DMX | Bremer, Butler | 38 min |
| Jul 19, 5:25 PM CDT | Severe Thunderstorm Warning | ARX | Allamakee, Clayton, Fayette, Winneshiek | 80 min |
| Jul 19, 5:59 PM CDT | Severe Thunderstorm Warning | DVN | Buchanan, Delaware, Dubuque | 61 min |
| Jul 19, 6:42 PM CDT | Severe Thunderstorm Warning | DVN | Dubuque, Jackson | 78 min |
| Jul 19, 7:03 PM CDT | Severe Thunderstorm Warning | DVN | Delaware, Dubuque, Jackson, Jones, Linn | 57 min |
| Jul 20, 7:05 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Henry | 40 min |
| Jul 20, 7:12 PM CDT | Severe Thunderstorm Warning | DMX | Carroll, Crawford, Sac | 26 min |
| Jul 20, 7:19 PM CDT | Severe Thunderstorm Warning | DMX | Greene, Guthrie | 41 min |
| Jul 20, 7:37 PM CDT | Severe Thunderstorm Warning | DVN | Henry, Jefferson | 53 min |
| Jul 20, 7:58 PM CDT | Severe Thunderstorm Warning | DMX | Carroll, Greene | 21 min |
| Jul 20, 8:27 PM CDT | Severe Thunderstorm Warning | DVN | Henry, Jefferson | 46 min |
| Jul 20, 8:45 PM CDT | Severe Thunderstorm Warning | DVN | Louisa, Muscatine | 31 min |
| Jul 20, 8:57 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Dallas, Greene, Guthrie | 48 min |
| Jul 20, 9:19 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Polk, Story | 56 min |
| Jul 20, 9:44 PM CDT | Severe Thunderstorm Warning | DVN | Muscatine, Scott | 46 min |
| Jul 20, 9:46 PM CDT | Severe Thunderstorm Warning | DVN | Jefferson, Keokuk, Washington | 30 min |
| Jul 20, 10:04 PM CDT | Severe Thunderstorm Warning | DMX | Grundy, Hardin, Jasper, Marshall, Story | 56 min |
| Jul 20, 10:13 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Scott | 45 min |
| Jul 20, 10:39 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Scott | 35 min |
| Jul 20, 11:29 PM CDT | Severe Thunderstorm Warning | DMX | Mahaska, Poweshiek | 31 min |
| Jul 20, 11:39 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Iowa, Keokuk | 27 min |
| Jul 21, 3:51 PM CDT | Severe Thunderstorm Warning | DVN | Iowa, Johnson, Washington | 54 min |
| Jul 21, 4:39 PM CDT | Severe Thunderstorm Warning | DVN | Iowa, Johnson | 66 min |
| Jul 21, 5:01 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Jones, Linn | 59 min |
| Jul 21, 5:08 PM CDT | Severe Thunderstorm Warning | ARX | Clayton | 35 min |
| Jul 21, 5:24 PM CDT | Severe Thunderstorm Warning | DVN | Dubuque | 37 min |
| Jul 21, 5:57 PM CDT | Severe Thunderstorm Warning | ARX | Clayton, Fayette | 48 min |
| Jul 21, 6:20 PM CDT | Severe Thunderstorm Warning | ARX | Fayette | 25 min |
| Jul 21, 11:10 PM CDT | Severe Thunderstorm Warning | DVN | Buchanan, Clinton, Delaware, Dubuque, Jackson, Jones | 65 min |
| Jul 22, 1:21 AM CDT | Severe Thunderstorm Warning | ARX | Chickasaw, Howard, Winneshiek | 39 min |
| Jul 22, 3:26 AM CDT | Severe Thunderstorm Warning | FSD | Plymouth, Sioux | 26 min |
| Aug 1, 3:59 PM CDT | Severe Thunderstorm Warning | FSD | Lyon | 31 min |
| Aug 1, 4:16 PM CDT | Severe Thunderstorm Warning | FSD | Lyon | 29 min |
| Aug 1, 4:30 PM CDT | Severe Thunderstorm Warning | FSD | Lyon | 30 min |
| Aug 1, 4:44 PM CDT | Severe Thunderstorm Warning | FSD | Osceola | 31 min |
| Aug 1, 5:30 PM CDT | Severe Thunderstorm Warning | FSD | Osceola | 14 min |
| Aug 1, 6:09 PM CDT | Severe Thunderstorm Warning | FSD | Dickinson | 25 min |
| Aug 10, 2:18 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Clinton, Jackson, Jones | 42 min |
| Aug 10, 2:57 PM CDT | Severe Thunderstorm Warning | DVN | Jackson | 48 min |
| Aug 10, 3:28 PM CDT | Severe Thunderstorm Warning | DVN | Iowa, Johnson, Louisa, Washington | 62 min |
| Aug 10, 3:44 PM CDT | Severe Thunderstorm Warning | DMX | Poweshiek | 31 min |
| Aug 10, 4:19 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Louisa | 39 min |
| Aug 10, 4:21 PM CDT | Severe Thunderstorm Warning | DVN | Clinton | 39 min |
| Aug 10, 4:46 PM CDT | Severe Thunderstorm Warning | DVN | Clinton | 44 min |
| Aug 10, 5:33 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines | 57 min |
| Aug 13, 9:13 PM CDT | Severe Thunderstorm Warning | FSD | Osceola | 17 min |
| Aug 15, 2:07 PM CDT | Severe Thunderstorm Warning | DMX | Lucas, Mahaska, Marion, Monroe | 38 min |
| Aug 18, 6:33 PM CDT | Severe Thunderstorm Warning | DVN | Lee | 42 min |
| Aug 18, 7:45 PM CDT | Severe Thunderstorm Warning | FSD | Osceola | 30 min |
| Aug 18, 9:27 PM CDT | Severe Thunderstorm Warning | DMX | Palo Alto | 48 min |
| Aug 18, 9:49 PM CDT | Severe Thunderstorm Warning | DMX | Sac | 56 min |
| Aug 18, 9:53 PM CDT | Severe Thunderstorm Warning | FSD | Buena Vista, Cherokee, Ida | 37 min |
| Aug 18, 10:03 PM CDT | Severe Thunderstorm Warning | DMX | Humboldt, Kossuth, Palo Alto, Pocahontas, Webster | 42 min |
| Aug 18, 10:27 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Webster | 48 min |
| Aug 18, 11:09 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Calhoun, Greene, Webster | 36 min |
| Aug 19, 9:30 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth | 29 min |
| Aug 19, 9:54 PM CDT | Severe Thunderstorm Warning | FSD | Sioux | 36 min |
| Aug 20, 11:05 PM CDT | Severe Thunderstorm Warning | DMX | Carroll, Crawford, Sac | 40 min |
| Aug 20, 11:12 PM CDT | Severe Thunderstorm Warning | FSD | Ida | 23 min |
| Aug 21, 1:54 AM CDT | Severe Thunderstorm Warning | FSD | Clay | 24 min |
| Aug 21, 1:55 AM CDT | Severe Thunderstorm Warning | DMX | Emmet, Palo Alto | 35 min |
| Aug 21, 2:07 AM CDT | Severe Thunderstorm Warning | DMX | Adair, Adams, Audubon, Cass, Guthrie | 53 min |
| Aug 21, 2:46 AM CDT | Severe Thunderstorm Warning | DMX | Adair, Adams, Cass, Guthrie, Madison, Union | 44 min |
| Aug 21, 3:30 AM CDT | Severe Thunderstorm Warning | DMX | Adair, Adams, Ringgold, Taylor, Union | 32 min |
| Aug 21, 2:02 PM CDT | Severe Thunderstorm Warning | DMX | Emmet, Kossuth, Palo Alto | 29 min |
| Aug 21, 2:11 PM CDT | Severe Thunderstorm Warning | FSD | Lyon, Plymouth, Sioux | 49 min |
| Aug 26, 1:14 PM CDT | Severe Thunderstorm Warning | DMX | Pocahontas | 31 min |
| Aug 27, 6:27 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Carroll, Greene, Webster | 22 min |
| Sep 16, 4:21 PM CDT | Severe Thunderstorm Warning | DMX | Poweshiek, Tama | 24 min |
| Sep 16, 8:58 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 32 min |
| Sep 19, 11:29 PM CDT | Severe Thunderstorm Warning | FSD | Lyon | 46 min |
| Sep 20, 6:49 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Scott | 41 min |
| Sep 20, 7:58 PM CDT | Severe Thunderstorm Warning | DVN | Scott | 47 min |
| Sep 21, 4:38 AM CDT | Severe Thunderstorm Warning | DMX | Mahaska, Poweshiek | 52 min |
| Sep 24, 3:08 PM CDT | Severe Thunderstorm Warning | FSD | Lyon | 37 min |
| Oct 2, 6:12 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, Ida, Plymouth, Woodbury | 33 min |
| Oct 2, 6:41 PM CDT | Severe Thunderstorm Warning | FSD | Buena Vista, Cherokee, Clay, O'Brien | 34 min |
| Oct 2, 7:13 PM CDT | Severe Thunderstorm Warning | FSD | Buena Vista, Clay | 32 min |
| Oct 3, 2:29 AM CDT | Severe Thunderstorm Warning | FSD | Lyon, Osceola | 31 min |
| Oct 6, 7:14 AM CDT | Severe Thunderstorm Warning | FSD | Plymouth | 46 min |
| Oct 13, 9:47 AM CDT | Severe Thunderstorm Warning | DMX | Marshall, Story | 43 min |
| Oct 14, 4:46 PM CDT | Severe Thunderstorm Warning | DVN | Lee, Van Buren | 59 min |
| Oct 14, 5:17 PM CDT | Severe Thunderstorm Warning | DVN | Lee | 43 min |
| Oct 21, 2:32 AM CDT | Severe Thunderstorm Warning | OAX | Shelby | 17 min |
| Oct 21, 7:55 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Polk, Warren | 24 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Fremont County35
- Pottawattamie County31
- Harrison County29
- Butler County28
- Webster County27
- Mills County26
- Page County25
- Franklin County25
- Clinton County24
- Kossuth County24
- Dallas County23
- Cerro Gordo County23
- Adair County22
- Johnson County22
- Hancock County22
- Warren County22
- Marshall County22
- Linn County22
- Guthrie County21
- Cedar County21
- Marion County21
- Story County21
- Black Hawk County21
- Jones County21
- Scott County20
- Greene County20
- Calhoun County20
- Hardin County20
- Polk County20
- Jasper County20
- Washington County19
- Montgomery County19
- Jackson County19
- Humboldt County18
- Grundy County18
- Bremer County18
- Clayton County18
- Dubuque County18
- Lyon County18
- Muscatine County17
59 more counties
- Carroll County17
- Wright County17
- Madison County17
- Plymouth County17
- Cass County16
- Lee County16
- Delaware County16
- Sioux County16
- Mahaska County15
- Boone County15
- Lucas County15
- Buchanan County15
- Shelby County14
- Pocahontas County14
- Hamilton County14
- Union County14
- Benton County14
- Fayette County14
- Iowa County13
- Des Moines County13
- Winnebago County13
- Chickasaw County13
- Poweshiek County13
- Tama County13
- Worth County13
- Keokuk County12
- Henry County12
- Louisa County12
- Clarke County12
- Jefferson County12
- Osceola County12
- Monona County11
- Cherokee County11
- Audubon County11
- Palo Alto County11
- Monroe County11
- Van Buren County11
- Ida County10
- Woodbury County10
- Crawford County10
- Sac County10
- Ringgold County10
- Winneshiek County10
- Clay County10
- Adams County9
- Howard County9
- Emmet County8
- Taylor County8
- Mitchell County8
- Appanoose County8
- Buena Vista County8
- Floyd County7
- Davis County7
- O'Brien County7
- Decatur County6
- Wayne County6
- Wapello County6
- Dickinson County6
- Allamakee County5
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20162018
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.