Alert archive / Iowa / Severe Thunderstorm Warnings
Severe Thunderstorm Warnings in Iowa, 2023
540 severe thunderstorm warnings in 2023. 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 2023. Tap one for its archive.
- Severe Thunderstorm Warnings
- 540
- Busiest month
- July137 severe thunderstorm warnings
- Busiest day
- March 31, 202344 severe thunderstorm warnings
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
326 of 540 severe thunderstorm warnings covering Iowa in 2023 had a qualifying storm report inside them; 732 of 848 hail, wind and damage reports fell inside a warning, on average 23 minutes after it went out.
Iowa, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Severe thunderstorm warnings | 540 | 326 | 40% | 848 | 86% | 23 min |
Each office's whole area, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Quad Cities, IA: severe thunderstorm warnings | 233 | 149 | 36% | 582 | 87% | 25 min |
| NWS La Crosse, WI: severe thunderstorm warnings | 76 | 49 | 36% | 160 | 78% | 23 min |
| NWS Des Moines, IA: severe thunderstorm warnings | 195 | 120 | 38% | 328 | 88% | 22 min |
| NWS Sioux Falls, SD: severe thunderstorm warnings | 228 | 126 | 45% | 282 | 82% | 18 min |
| NWS Omaha, NE: severe thunderstorm warnings | 371 | 147 | 60% | 513 | 81% | 23 min |
An office's figures cover every county it serves, including across state lines.
Verified by the Iowa Environmental Mesonet's Cow, which matches each storm-based warning with the local storm reports inside its polygon while it was in force, within 15 km of its edge: a tornado warning counts as verified on a tornado report, a severe thunderstorm warning on hail of 1 inch or more, a gust of 58 mph or more, or wind damage, a flash flood warning on a flash flood report. The false alarm ratio is the share of warnings with no such report; "inside a warning" is the probability of detection, the share of reports that fell inside one; lead time runs from the warning's issue to each report inside it, counting zero for a report that came first. A warning with no report is not proof nothing happened: reports come from spotters, the public and damage surveys, and are thin where few people live.
The alerts
Every alert, in the order issued. Times are local, Central Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 30, 11:12 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth | 33 min |
| Mar 30, 11:23 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth | 37 min |
| Mar 31, 12:30 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Decatur, Ringgold, Union | 45 min |
| Mar 31, 12:36 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Decatur, Lucas, Madison, Warren | 39 min |
| Mar 31, 1:18 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Lucas, Marion, Warren | 42 min |
| Mar 31, 1:36 PM CDT | Severe Thunderstorm Warning | DVN | Lee | 24 min |
| Mar 31, 1:57 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Madison, Union, Warren | 48 min |
| Mar 31, 2:01 PM CDT | Severe Thunderstorm Warning | DMX | Dallas, Madison, Polk, Warren | 29 min |
| Mar 31, 2:03 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marion, Warren | 42 min |
| Mar 31, 2:07 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Decatur, Lucas, Warren | 38 min |
| Mar 31, 2:07 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Henry, Louisa, Muscatine | 38 min |
| Mar 31, 2:13 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Dallas, Polk, Story | 47 min |
| Mar 31, 2:15 PM CDT | Severe Thunderstorm Warning | DVN | Louisa, Scott | 45 min |
| Mar 31, 2:25 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Davis, Monroe, Wayne | 50 min |
| Mar 31, 2:41 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marshall, Poweshiek, Tama | 42 min |
| Mar 31, 2:41 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Lucas, Marion, Warren | 49 min |
| Mar 31, 2:46 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Grundy, Hamilton, Hardin, Marshall, Story | 59 min |
| Mar 31, 2:56 PM CDT | Severe Thunderstorm Warning | DVN | Scott | 49 min |
| Mar 31, 3:05 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Davis, Monroe, Wapello, Wayne | 40 min |
| Mar 31, 3:20 PM CDT | Severe Thunderstorm Warning | DMX | Davis, Mahaska, Monroe, Wapello | 40 min |
| Mar 31, 3:23 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Mahaska, Marion, Poweshiek, Tama | 37 min |
| Mar 31, 3:26 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Scott | 49 min |
| Mar 31, 3:39 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Davis, Monroe, Wapello | 51 min |
| Mar 31, 3:43 PM CDT | Severe Thunderstorm Warning | ARX | Chickasaw, Floyd, Howard, Mitchell | 47 min |
| Mar 31, 3:49 PM CDT | Severe Thunderstorm Warning | DMX | Hancock, Kossuth, Winnebago | 56 min |
| Mar 31, 3:53 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Buchanan, Iowa | 52 min |
| Mar 31, 3:54 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Jasper, Mahaska, Marion, Poweshiek, Tama | 51 min |
| Mar 31, 3:55 PM CDT | Severe Thunderstorm Warning | DMX | Poweshiek | 35 min |
| Mar 31, 4:14 PM CDT | Severe Thunderstorm Warning | DVN | Jefferson, Keokuk, Van Buren, Washington | 31 min |
| Mar 31, 4:17 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Franklin, Hancock, Winnebago, Worth | 36 min |
| Mar 31, 4:19 PM CDT | Severe Thunderstorm Warning | DMX | Mahaska, Marion, Monroe, Poweshiek | 56 min |
| Mar 31, 4:24 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Bremer, Butler, Cerro Gordo, Franklin, Grundy and 5 more | 62 min |
| Mar 31, 4:39 PM CDT | Severe Thunderstorm Warning | ARX | Chickasaw, Floyd | 66 min |
| Mar 31, 4:40 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Mahaska, Poweshiek | 32 min |
| Mar 31, 4:50 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Buchanan, Delaware, Iowa, Linn | 55 min |
| Mar 31, 4:57 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Iowa, Jefferson, Johnson, Keokuk, Linn and 1 more | 48 min |
| Mar 31, 5:17 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Clinton, Delaware, Dubuque, Jackson, Johnson and 2 more | 43 min |
| Mar 31, 5:22 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Clinton, Des Moines, Henry, Johnson, Louisa and 2 more | 38 min |
| Mar 31, 5:24 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Henry, Lee | 51 min |
| Mar 31, 5:44 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Dubuque, Jackson | 61 min |
| Mar 31, 5:45 PM CDT | Severe Thunderstorm Warning | ARX | Clayton | 17 min |
| Mar 31, 5:54 PM CDT | Severe Thunderstorm Warning | DVN | Buchanan, Cedar, Clinton, Delaware, Dubuque, Jackson and 2 more | 51 min |
| Mar 31, 5:59 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Muscatine, Scott | 46 min |
| Mar 31, 6:18 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Jackson | 27 min |
| Apr 4, 7:38 AM CDT | Severe Thunderstorm Warning | DVN | Iowa, Jefferson, Johnson, Keokuk, Washington | 37 min |
| Apr 4, 7:43 AM CDT | Severe Thunderstorm Warning | DVN | Iowa, Johnson, Keokuk, Washington | 32 min |
| Apr 4, 8:11 AM CDT | Severe Thunderstorm Warning | DVN | Cedar, Johnson, Louisa, Muscatine, Washington | 49 min |
| Apr 4, 8:12 AM CDT | Severe Thunderstorm Warning | DVN | Benton, Iowa, Johnson, Linn | 33 min |
| Apr 4, 8:29 AM CDT | Severe Thunderstorm Warning | DVN | Benton, Buchanan, Delaware, Johnson, Jones, Linn | 31 min |
| Apr 4, 8:52 AM CDT | Severe Thunderstorm Warning | DVN | Cedar, Clinton, Muscatine, Scott | 38 min |
| Apr 4, 9:24 AM CDT | Severe Thunderstorm Warning | DVN | Cedar, Clinton, Muscatine, Scott | 51 min |
| Apr 4, 9:54 AM CDT | Severe Thunderstorm Warning | DVN | Clinton, Scott | 34 min |
| Apr 4, 10:06 AM CDT | Severe Thunderstorm Warning | DVN | Clinton, Scott | 24 min |
| Apr 4, 10:26 AM CDT | Severe Thunderstorm Warning | DVN | Clinton | 64 min |
| Apr 4, 10:43 AM CDT | Severe Thunderstorm Warning | DVN | Clinton, Jackson | 32 min |
| Apr 4, 4:34 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Boone, Dallas, Guthrie, Polk | 41 min |
| Apr 4, 4:45 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Adams, Ringgold, Taylor, Union | 45 min |
| Apr 4, 4:52 PM CDT | Severe Thunderstorm Warning | DMX | Adams, Ringgold, Taylor, Union | 38 min |
| Apr 4, 4:55 PM CDT | Severe Thunderstorm Warning | OAX | Page | 8 min |
| Apr 4, 5:26 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Boone, Dallas, Greene, Guthrie, Madison and 1 more | 49 min |
| Apr 4, 5:35 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Adams, Clarke, Decatur, Madison, Ringgold and 2 more | 40 min |
| Apr 4, 5:46 PM CDT | Severe Thunderstorm Warning | DVN | Lee | 44 min |
| Apr 4, 6:08 PM CDT | Severe Thunderstorm Warning | DMX | Butler, Franklin, Grundy, Hamilton, Hardin | 52 min |
| Apr 4, 6:10 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Lucas, Madison, Marion, Polk, Union and 1 more | 50 min |
| Apr 4, 6:17 PM CDT | Severe Thunderstorm Warning | OAX | Montgomery, Page | 12 min |
| Apr 4, 6:21 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Hancock, Worth | 39 min |
| Apr 4, 6:30 PM CDT | Severe Thunderstorm Warning | DMX | Hardin, Jasper, Marshall, Polk, Story | 45 min |
| Apr 4, 6:35 PM CDT | Severe Thunderstorm Warning | DMX | Butler, Franklin | 40 min |
| Apr 4, 6:43 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Adams, Cass, Dallas, Guthrie, Madison and 1 more | 47 min |
| Apr 4, 6:44 PM CDT | Severe Thunderstorm Warning | ARX | Chickasaw, Floyd | 61 min |
| Apr 4, 6:54 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marshall, Polk, Poweshiek, Tama | 51 min |
| Apr 4, 6:57 PM CDT | Severe Thunderstorm Warning | DMX | Worth | 33 min |
| Apr 4, 7:00 PM CDT | Severe Thunderstorm Warning | OAX | Montgomery, Page | 7 min |
| Apr 4, 7:01 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Adams, Ringgold, Taylor, Union | 44 min |
| Apr 4, 7:24 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Mahaska, Marion, Poweshiek, Tama | 66 min |
| Apr 4, 7:27 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Boone, Dallas, Madison, Polk, Warren | 48 min |
| Apr 4, 7:42 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Adams, Madison, Ringgold, Taylor, Union | 63 min |
| Apr 4, 8:13 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marshall, Polk, Story, Warren | 47 min |
| Apr 4, 8:21 PM CDT | Severe Thunderstorm Warning | DVN | Benton | 39 min |
| Apr 4, 8:48 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Madison, Marion, Polk, Warren | 42 min |
| Apr 4, 8:49 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Jackson | 26 min |
| Apr 4, 8:55 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Buchanan, Delaware, Linn | 50 min |
| Apr 4, 8:56 PM CDT | Severe Thunderstorm Warning | DMX | Grundy, Jasper, Marshall, Tama | 49 min |
| Apr 4, 9:43 PM CDT | Severe Thunderstorm Warning | DVN | Buchanan, Delaware | 17 min |
| Apr 4, 9:45 PM CDT | Severe Thunderstorm Warning | ARX | Clayton, Fayette | 25 min |
| Apr 4, 10:29 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Buchanan, Delaware, Linn | 46 min |
| Apr 4, 10:51 PM CDT | Severe Thunderstorm Warning | ARX | Clayton, Fayette | 39 min |
| Apr 4, 11:09 PM CDT | Severe Thunderstorm Warning | ARX | Clayton | 51 min |
| Apr 4, 11:15 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Buchanan, Delaware, Linn | 45 min |
| Apr 5, 1:10 AM CDT | Severe Thunderstorm Warning | DVN | Johnson, Washington | 35 min |
| Apr 5, 1:43 AM CDT | Severe Thunderstorm Warning | DVN | Cedar, Jones | 47 min |
| Apr 5, 1:54 AM CDT | Severe Thunderstorm Warning | DVN | Johnson, Louisa, Muscatine, Washington | 36 min |
| Apr 5, 3:23 AM CDT | Severe Thunderstorm Warning | DVN | Henry, Jefferson, Lee, Louisa, Van Buren, Washington | 37 min |
| Apr 14, 6:07 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 53 min |
| Apr 14, 6:58 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 62 min |
| Apr 14, 7:27 PM CDT | Severe Thunderstorm Warning | OAX | Mills | 63 min |
| Apr 14, 8:01 PM CDT | Severe Thunderstorm Warning | OAX | Mills, Pottawattamie | 59 min |
| Apr 14, 8:32 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Pottawattamie, Shelby | 58 min |
| Apr 14, 8:36 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 54 min |
| Apr 14, 9:08 PM CDT | Severe Thunderstorm Warning | DMX | Audubon, Cass | 52 min |
| Apr 14, 9:14 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills | 61 min |
| Apr 14, 9:51 PM CDT | Severe Thunderstorm Warning | OAX | Mills, Montgomery, Page, Pottawattamie | 54 min |
| Apr 15, 5:08 PM CDT | Severe Thunderstorm Warning | DVN | Lee | 37 min |
| Apr 19, 1:04 AM CDT | Severe Thunderstorm Warning | OAX | Harrison | 41 min |
| Apr 19, 5:23 AM CDT | Severe Thunderstorm Warning | DMX | Jasper, Polk, Warren | 28 min |
| Apr 19, 9:36 AM CDT | Severe Thunderstorm Warning | DVN | Buchanan, Delaware, Linn | 24 min |
| Apr 19, 9:41 AM CDT | Severe Thunderstorm Warning | DVN | Jones, Linn | 34 min |
| Apr 19, 9:54 AM CDT | Severe Thunderstorm Warning | DVN | Delaware, Dubuque, Jones | 36 min |
| Apr 19, 10:08 AM CDT | Severe Thunderstorm Warning | DVN | Delaware, Jones, Linn | 37 min |
| Apr 19, 10:25 AM CDT | Severe Thunderstorm Warning | DVN | Dubuque | 11 min |
| Apr 19, 10:30 AM CDT | Severe Thunderstorm Warning | DVN | Dubuque, Jackson, Jones | 30 min |
| Apr 19, 10:53 AM CDT | Severe Thunderstorm Warning | DVN | Dubuque, Jackson, Jones | 37 min |
| Apr 19, 11:24 AM CDT | Severe Thunderstorm Warning | DVN | Dubuque, Jackson, Jones | 36 min |
| Apr 19, 11:25 AM CDT | Severe Thunderstorm Warning | DVN | Dubuque, Jackson, Jones | 35 min |
| Apr 19, 11:26 AM CDT | Severe Thunderstorm Warning | DVN | Dubuque | 19 min |
| Apr 19, 5:06 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Monona | 54 min |
| Apr 19, 5:09 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills | 66 min |
| Apr 19, 5:50 PM CDT | Severe Thunderstorm Warning | OAX | Fremont | 40 min |
| Apr 19, 5:52 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Monona | 68 min |
| Apr 19, 6:11 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Pottawattamie, Shelby | 14 min |
| Apr 19, 6:17 PM CDT | Severe Thunderstorm Warning | OAX | Montgomery, Pottawattamie | 43 min |
| Apr 19, 6:27 PM CDT | Severe Thunderstorm Warning | OAX | Fremont | 63 min |
| Apr 19, 6:46 PM CDT | Severe Thunderstorm Warning | DMX | Crawford | 29 min |
| Apr 19, 6:50 PM CDT | Severe Thunderstorm Warning | OAX | Mills, Pottawattamie | 55 min |
| Apr 19, 6:50 PM CDT | Severe Thunderstorm Warning | OAX | Monona | 25 min |
| Apr 19, 7:11 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie, Shelby | 49 min |
| Apr 19, 7:12 PM CDT | Severe Thunderstorm Warning | DMX | Crawford, Sac | 48 min |
| Apr 19, 7:19 PM CDT | Severe Thunderstorm Warning | OAX | Fremont | 41 min |
| Apr 19, 7:20 PM CDT | Severe Thunderstorm Warning | FSD | Ida | 40 min |
| Apr 19, 7:24 PM CDT | Severe Thunderstorm Warning | DMX | Audubon, Cass | 51 min |
| Apr 19, 7:28 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 31 min |
| Apr 19, 7:37 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills | 53 min |
| Apr 19, 7:40 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Shelby | 32 min |
| Apr 19, 7:47 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth, Sioux | 43 min |
| Apr 19, 7:56 PM CDT | Severe Thunderstorm Warning | DMX | Crawford, Sac | 49 min |
| Apr 19, 7:57 PM CDT | Severe Thunderstorm Warning | FSD | Ida | 33 min |
| Apr 19, 8:01 PM CDT | Severe Thunderstorm Warning | FSD | Dickinson, O'Brien, Osceola | 17 min |
| Apr 19, 8:09 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth, Sioux | 36 min |
| Apr 19, 8:14 PM CDT | Severe Thunderstorm Warning | DMX | Audubon, Carroll, Greene, Guthrie | 15 min |
| Apr 19, 8:17 PM CDT | Severe Thunderstorm Warning | DMX | Sac | 28 min |
| Apr 19, 8:27 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills | 23 min |
| Apr 19, 8:30 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth, Woodbury | 30 min |
| Apr 19, 8:31 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills, Pottawattamie | 59 min |
| Apr 19, 8:39 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth, Sioux | 28 min |
| Apr 19, 8:41 PM CDT | Severe Thunderstorm Warning | FSD | Lyon, Sioux | 25 min |
| Apr 19, 8:42 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Dallas, Guthrie, Madison | 48 min |
| Apr 19, 9:04 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, O'Brien, Plymouth, Sioux | 41 min |
| Apr 19, 9:11 PM CDT | Severe Thunderstorm Warning | FSD | Lyon, Sioux | 34 min |
| Apr 19, 9:19 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Dallas, Polk | 26 min |
| Apr 19, 9:26 PM CDT | Severe Thunderstorm Warning | OAX | Mills, Pottawattamie | 26 min |
| Apr 19, 9:44 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Dallas, Polk, Story | 46 min |
| Apr 19, 10:10 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Marshall, Polk, Story | 50 min |
| Apr 19, 10:29 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marshall, Polk, Story | 46 min |
| Apr 19, 10:41 PM CDT | Severe Thunderstorm Warning | DMX | Marion, Polk, Warren | 49 min |
| Apr 19, 10:57 PM CDT | Severe Thunderstorm Warning | DMX | Grundy, Hardin, Marshall, Story | 48 min |
| Apr 19, 11:08 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marion, Marshall, Polk, Story | 37 min |
| Apr 19, 11:41 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Mahaska, Marion, Marshall, Poweshiek, Tama | 58 min |
| Apr 20, 1:33 AM CDT | Severe Thunderstorm Warning | OAX | Fremont | 27 min |
| Apr 20, 2:32 AM CDT | Severe Thunderstorm Warning | DVN | Clinton, Scott | 28 min |
| Apr 20, 1:57 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Henry, Lee | 48 min |
| Apr 20, 3:10 PM CDT | Severe Thunderstorm Warning | DVN | Clinton | 35 min |
| May 6, 4:20 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Page | 40 min |
| May 6, 8:22 PM CDT | Severe Thunderstorm Warning | DVN | Van Buren | 38 min |
| May 6, 8:54 PM CDT | Severe Thunderstorm Warning | DVN | Henry, Lee, Van Buren | 40 min |
| May 6, 9:38 PM CDT | Severe Thunderstorm Warning | DVN | Lee | 34 min |
| May 6, 9:53 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Lee | 52 min |
| May 6, 10:38 PM CDT | Severe Thunderstorm Warning | DVN | Henry, Jefferson, Van Buren | 52 min |
| May 6, 10:52 PM CDT | Severe Thunderstorm Warning | DVN | Iowa, Johnson, Keokuk, Louisa, Washington | 38 min |
| May 7, 12:01 AM CDT | Severe Thunderstorm Warning | DVN | Jefferson | 29 min |
| May 7, 12:19 AM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Henry, Jefferson, Louisa, Washington | 41 min |
| May 7, 12:34 AM CDT | Severe Thunderstorm Warning | DVN | Van Buren | 41 min |
| May 7, 12:40 AM CDT | Severe Thunderstorm Warning | DMX | Davis | 50 min |
| May 7, 12:47 AM CDT | Severe Thunderstorm Warning | DVN | Louisa | 28 min |
| May 7, 1:03 AM CDT | Severe Thunderstorm Warning | DVN | Jefferson | 27 min |
| May 7, 1:14 AM CDT | Severe Thunderstorm Warning | DVN | Van Buren | 31 min |
| May 7, 1:34 AM CDT | Severe Thunderstorm Warning | DVN | Lee, Van Buren | 26 min |
| May 7, 12:45 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Carroll, Crawford, Sac | 45 min |
| May 7, 1:24 PM CDT | Severe Thunderstorm Warning | DMX | Carroll, Greene | 51 min |
| May 7, 2:03 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Greene, Webster | 26 min |
| May 7, 2:56 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Hamilton, Hardin, Marshall, Story | 49 min |
| May 7, 3:30 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marshall, Story | 45 min |
| May 7, 3:40 PM CDT | Severe Thunderstorm Warning | DMX | Grundy, Hardin, Marshall, Story, Tama | 32 min |
| May 7, 3:49 PM CDT | Severe Thunderstorm Warning | DMX | Tama | 26 min |
| May 7, 3:51 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Poweshiek | 39 min |
| May 7, 3:51 PM CDT | Severe Thunderstorm Warning | DVN | Benton | 39 min |
| May 7, 4:08 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Iowa | 37 min |
| May 7, 4:15 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marshall, Poweshiek, Tama | 45 min |
| May 7, 4:24 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Iowa | 36 min |
| May 7, 4:32 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Henry, Lee | 43 min |
| May 7, 4:46 PM CDT | Severe Thunderstorm Warning | DMX | Poweshiek, Tama | 44 min |
| May 7, 4:48 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Iowa, Johnson, Linn | 42 min |
| May 7, 4:57 PM CDT | Severe Thunderstorm Warning | DVN | Iowa, Keokuk, Washington | 48 min |
| May 7, 5:01 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Mahaska, Poweshiek | 44 min |
| May 7, 5:10 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Lee | 33 min |
| May 7, 5:19 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Johnson, Louisa, Muscatine, Washington | 41 min |
| May 7, 5:38 PM CDT | Severe Thunderstorm Warning | DMX | Mahaska | 15 min |
| May 7, 5:42 PM CDT | Severe Thunderstorm Warning | DVN | Jefferson, Keokuk, Washington | 48 min |
| May 7, 5:49 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Johnson, Louisa, Muscatine, Scott, Washington | 56 min |
| May 7, 6:07 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Scott | 38 min |
| May 7, 6:25 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Henry, Jefferson, Louisa, Van Buren, Washington | 35 min |
| May 7, 6:36 PM CDT | Severe Thunderstorm Warning | DVN | Louisa, Muscatine, Scott | 39 min |
| May 7, 6:41 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Scott | 49 min |
| May 7, 6:52 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Henry, Jefferson, Louisa | 38 min |
| May 7, 7:06 PM CDT | Severe Thunderstorm Warning | DVN | Henry, Jefferson, Lee, Van Buren | 24 min |
| May 7, 7:06 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills | 54 min |
| May 7, 7:19 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Lee | 41 min |
| May 7, 7:21 PM CDT | Severe Thunderstorm Warning | OAX | Mills, Pottawattamie | 54 min |
| May 7, 7:27 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Henry | 33 min |
| May 7, 7:36 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Adams, Cass, Union | 39 min |
| May 7, 7:39 PM CDT | Severe Thunderstorm Warning | OAX | Montgomery, Pottawattamie | 96 min |
| May 7, 7:49 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Lee | 56 min |
| May 7, 7:56 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills | 64 min |
| May 7, 7:58 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Adams, Cass | 47 min |
| May 7, 8:13 PM CDT | Severe Thunderstorm Warning | DMX | Adair | 47 min |
| May 7, 8:16 PM CDT | Severe Thunderstorm Warning | OAX | Mills, Pottawattamie | 44 min |
| May 7, 8:28 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Adams, Union | 47 min |
| May 7, 8:29 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills, Montgomery, Page | 61 min |
| May 7, 8:29 PM CDT | Severe Thunderstorm Warning | OAX | Fremont | 31 min |
| May 7, 8:44 PM CDT | Severe Thunderstorm Warning | DMX | Adams, Union | 46 min |
| May 7, 8:54 PM CDT | Severe Thunderstorm Warning | OAX | Montgomery, Page | 66 min |
| May 7, 8:57 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Madison, Union | 48 min |
| May 7, 8:57 PM CDT | Severe Thunderstorm Warning | OAX | Mills, Pottawattamie | 14 min |
| May 7, 9:03 PM CDT | Severe Thunderstorm Warning | DMX | Adams, Taylor | 42 min |
| May 7, 9:17 PM CDT | Severe Thunderstorm Warning | OAX | Shelby | 28 min |
| May 7, 9:20 PM CDT | Severe Thunderstorm Warning | DMX | Grundy, Hardin, Marshall | 40 min |
| May 7, 9:21 PM CDT | Severe Thunderstorm Warning | OAX | Fremont | 39 min |
| May 7, 9:33 PM CDT | Severe Thunderstorm Warning | DVN | Buchanan | 42 min |
| May 7, 9:36 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 39 min |
| May 7, 9:57 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Tama | 33 min |
| May 7, 10:06 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 54 min |
| May 7, 10:15 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 47 min |
| May 7, 10:29 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Decatur, Lucas, Warren, Wayne | 46 min |
| May 7, 10:38 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Shelby | 48 min |
| May 7, 11:04 PM CDT | Severe Thunderstorm Warning | OAX | Shelby | 30 min |
| May 8, 6:12 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth | 33 min |
| May 8, 7:10 PM CDT | Severe Thunderstorm Warning | OAX | Monona | 35 min |
| May 8, 7:12 PM CDT | Severe Thunderstorm Warning | DMX | Emmet, Kossuth | 48 min |
| May 8, 7:17 PM CDT | Severe Thunderstorm Warning | DMX | Kossuth, Palo Alto | 43 min |
| May 8, 7:56 PM CDT | Severe Thunderstorm Warning | DMX | Humboldt, Kossuth, Palo Alto, Pocahontas | 49 min |
| May 8, 9:01 PM CDT | Severe Thunderstorm Warning | OAX | Shelby | 29 min |
| May 10, 11:48 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth, Woodbury | 42 min |
| May 11, 12:27 AM CDT | Severe Thunderstorm Warning | FSD | Plymouth, Sioux | 33 min |
| May 11, 12:44 AM CDT | Severe Thunderstorm Warning | FSD | Cherokee, O'Brien, Plymouth, Sioux | 23 min |
| May 11, 1:40 AM CDT | Severe Thunderstorm Warning | FSD | Lyon | 50 min |
| May 12, 7:27 PM CDT | Severe Thunderstorm Warning | FSD | Woodbury | 33 min |
| May 12, 7:31 PM CDT | Severe Thunderstorm Warning | OAX | Monona | 59 min |
| May 12, 7:46 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth, Woodbury | 44 min |
| May 12, 7:50 PM CDT | Severe Thunderstorm Warning | FSD | Woodbury | 40 min |
| May 12, 7:51 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Page | 8 min |
| May 12, 7:51 PM CDT | Severe Thunderstorm Warning | OAX | Monona | 9 min |
| May 12, 7:56 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Monona | 49 min |
| May 12, 8:17 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth, Sioux | 28 min |
| May 12, 8:18 PM CDT | Severe Thunderstorm Warning | OAX | Harrison | 27 min |
| May 12, 8:27 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth, Woodbury | 48 min |
| May 12, 8:59 PM CDT | Severe Thunderstorm Warning | OAX | Harrison | 31 min |
| May 12, 9:26 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Monona | 34 min |
| May 12, 9:54 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Monona | 51 min |
| May 12, 10:47 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Monona | 28 min |
| May 13, 12:17 PM CDT | Severe Thunderstorm Warning | DMX | Dallas, Madison, Polk, Warren | 43 min |
| May 13, 12:45 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Iowa | 31 min |
| May 13, 12:57 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marion, Polk, Warren | 48 min |
| May 13, 12:57 PM CDT | Severe Thunderstorm Warning | DVN | Johnson | 18 min |
| May 13, 3:21 PM CDT | Severe Thunderstorm Warning | DMX | Mahaska, Marion | 39 min |
| May 29, 8:47 PM CDT | Severe Thunderstorm Warning | FSD | Dickinson | 28 min |
| May 30, 3:51 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Greene, Webster | 39 min |
| May 31, 3:52 PM CDT | Severe Thunderstorm Warning | FSD | O'Brien, Sioux | 23 min |
| Jun 1, 4:17 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 43 min |
| Jun 2, 3:08 PM CDT | Severe Thunderstorm Warning | DMX | Dallas, Polk | 22 min |
| Jun 4, 2:35 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Louisa | 40 min |
| Jun 4, 2:45 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Henry | 45 min |
| Jun 4, 3:27 PM CDT | Severe Thunderstorm Warning | DVN | Henry, Jefferson, Washington | 36 min |
| Jun 4, 4:02 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills | 28 min |
| Jun 4, 6:17 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 31 min |
| Jun 8, 4:04 AM CDT | Severe Thunderstorm Warning | FSD | Dickinson, Osceola | 23 min |
| Jun 17, 5:59 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth | 14 min |
| Jun 17, 7:11 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Guthrie | 49 min |
| Jun 17, 7:34 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Dallas, Guthrie, Madison | 41 min |
| Jun 17, 8:22 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Adams, Madison, Union | 38 min |
| Jun 24, 4:03 AM CDT | Severe Thunderstorm Warning | FSD | Lyon, Plymouth, Sioux | 42 min |
| Jun 24, 4:45 AM CDT | Severe Thunderstorm Warning | FSD | Lyon, O'Brien, Osceola, Sioux | 45 min |
| Jun 24, 5:31 AM CDT | Severe Thunderstorm Warning | FSD | Clay, Dickinson, O'Brien, Osceola | 44 min |
| Jun 24, 1:15 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Greene, Hamilton, Story, Webster | 45 min |
| Jun 24, 2:12 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Greene, Webster | 48 min |
| Jun 24, 2:26 PM CDT | Severe Thunderstorm Warning | DMX | Marion, Warren | 34 min |
| Jun 24, 2:58 PM CDT | Severe Thunderstorm Warning | DMX | Marion | 32 min |
| Jun 24, 3:46 PM CDT | Severe Thunderstorm Warning | DMX | Butler, Franklin | 44 min |
| Jun 24, 4:16 PM CDT | Severe Thunderstorm Warning | DMX | Mahaska, Marion, Monroe | 29 min |
| Jun 24, 4:21 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Bremer, Butler, Grundy | 39 min |
| Jun 24, 4:55 PM CDT | Severe Thunderstorm Warning | DMX | Monroe, Wapello | 35 min |
| Jun 24, 4:58 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Bremer | 37 min |
| Jun 24, 5:04 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie, Shelby | 26 min |
| Jun 24, 5:16 PM CDT | Severe Thunderstorm Warning | ARX | Fayette | 59 min |
| Jun 24, 5:20 PM CDT | Severe Thunderstorm Warning | DVN | Buchanan | 40 min |
| Jun 24, 5:21 PM CDT | Severe Thunderstorm Warning | DMX | Audubon, Cass | 39 min |
| Jun 24, 5:26 PM CDT | Severe Thunderstorm Warning | DMX | Wapello | 25 min |
| Jun 24, 5:31 PM CDT | Severe Thunderstorm Warning | DMX | Davis, Wapello | 29 min |
| Jun 24, 5:37 PM CDT | Severe Thunderstorm Warning | DVN | Jefferson, Van Buren | 38 min |
| Jun 24, 5:44 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Cass | 46 min |
| Jun 24, 5:50 PM CDT | Severe Thunderstorm Warning | DMX | Davis, Wapello | 25 min |
| Jun 24, 6:08 PM CDT | Severe Thunderstorm Warning | DVN | Van Buren | 52 min |
| Jun 24, 6:43 PM CDT | Severe Thunderstorm Warning | DVN | Henry, Lee, Van Buren | 47 min |
| Jun 24, 6:46 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Madison, Union | 23 min |
| Jun 24, 6:56 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Tama | 20 min |
| Jun 24, 7:00 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Buchanan, Linn | 45 min |
| Jun 24, 7:26 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Lee | 26 min |
| Jun 24, 8:06 PM CDT | Severe Thunderstorm Warning | DVN | Delaware, Dubuque, Jones, Linn | 39 min |
| Jun 24, 8:12 PM CDT | Severe Thunderstorm Warning | DVN | Jones, Linn | 33 min |
| Jun 24, 8:22 PM CDT | Severe Thunderstorm Warning | DVN | Delaware, Dubuque | 53 min |
| Jun 24, 8:36 PM CDT | Severe Thunderstorm Warning | DVN | Delaware, Dubuque, Jackson, Jones | 39 min |
| Jun 24, 9:03 PM CDT | Severe Thunderstorm Warning | DVN | Lee | 42 min |
| Jun 24, 9:12 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Dubuque, Jackson, Jones | 48 min |
| Jun 24, 9:25 PM CDT | Severe Thunderstorm Warning | FSD | Buena Vista, Cherokee | 35 min |
| Jun 24, 9:30 PM CDT | Severe Thunderstorm Warning | DMX | Hancock, Kossuth, Winnebago | 22 min |
| Jun 24, 9:55 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Jackson | 50 min |
| Jun 24, 10:05 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Clinton, Muscatine, Scott | 55 min |
| Jun 24, 10:40 PM CDT | Severe Thunderstorm Warning | DMX | Kossuth, Palo Alto | 50 min |
| Jun 24, 10:53 PM CDT | Severe Thunderstorm Warning | DVN | Scott | 37 min |
| Jun 24, 11:24 PM CDT | Severe Thunderstorm Warning | DMX | Kossuth, Palo Alto | 51 min |
| Jun 24, 11:32 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Davis | 27 min |
| Jun 25, 12:30 AM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Grundy | 45 min |
| Jun 25, 1:10 AM CDT | Severe Thunderstorm Warning | DVN | Buchanan | 35 min |
| Jun 29, 7:29 AM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills, Pottawattamie | 31 min |
| Jun 29, 7:45 AM CDT | Severe Thunderstorm Warning | OAX | Fremont, Page | 15 min |
| Jun 29, 7:51 AM CDT | Severe Thunderstorm Warning | OAX | Fremont, Harrison, Mills, Montgomery, Page, Pottawattamie | 39 min |
| Jun 29, 8:16 AM CDT | Severe Thunderstorm Warning | DMX | Adair, Adams, Cass, Ringgold, Taylor, Union | 44 min |
| Jun 29, 8:25 AM CDT | Severe Thunderstorm Warning | OAX | Mills, Montgomery, Page, Pottawattamie | 20 min |
| Jun 29, 8:54 AM CDT | Severe Thunderstorm Warning | DMX | Adair, Adams, Cass, Clarke, Decatur, Madison and 3 more | 51 min |
| Jun 29, 9:01 AM CDT | Severe Thunderstorm Warning | DVN | Jefferson, Van Buren | 44 min |
| Jun 29, 9:04 AM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Decatur, Lucas, Monroe, Wayne | 56 min |
| Jun 29, 9:29 AM CDT | Severe Thunderstorm Warning | DMX | Dallas, Madison, Polk, Warren | 46 min |
| Jun 29, 9:35 AM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Davis, Monroe, Wapello | 55 min |
| Jun 29, 9:37 AM CDT | Severe Thunderstorm Warning | DVN | Jefferson | 38 min |
| Jun 29, 10:08 AM CDT | Severe Thunderstorm Warning | DVN | Jefferson, Lee, Van Buren | 52 min |
| Jun 29, 10:10 AM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Henry, Jefferson, Keokuk, Louisa, Washington | 50 min |
| Jun 29, 10:46 AM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Lee | 59 min |
| Jun 29, 10:57 AM CDT | Severe Thunderstorm Warning | DVN | Henry, Jefferson, Louisa, Washington | 33 min |
| Jun 29, 11:12 AM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Louisa, Muscatine | 48 min |
| Jun 29, 11:47 AM CDT | Severe Thunderstorm Warning | DVN | Scott | 43 min |
| Jun 30, 6:14 AM CDT | Severe Thunderstorm Warning | DMX | Adair, Adams, Cass, Decatur, Madison, Ringgold and 2 more | 61 min |
| Jun 30, 7:04 AM CDT | Severe Thunderstorm Warning | DMX | Adair, Appanoose, Clarke, Decatur, Lucas, Madison and 5 more | 56 min |
| Jun 30, 7:54 AM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Lucas, Monroe, Wayne | 51 min |
| Jul 3, 4:38 PM CDT | Severe Thunderstorm Warning | FSD | Sioux | 52 min |
| Jul 3, 5:39 PM CDT | Severe Thunderstorm Warning | FSD | Buena Vista, Cherokee | 51 min |
| Jul 3, 6:32 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Pocahontas | 28 min |
| Jul 4, 5:05 PM CDT | Severe Thunderstorm Warning | FSD | Woodbury | 40 min |
| Jul 4, 5:44 PM CDT | Severe Thunderstorm Warning | FSD | Woodbury | 46 min |
| Jul 4, 6:10 PM CDT | Severe Thunderstorm Warning | FSD | Woodbury | 50 min |
| Jul 4, 6:22 PM CDT | Severe Thunderstorm Warning | FSD | Woodbury | 53 min |
| Jul 4, 6:27 PM CDT | Severe Thunderstorm Warning | OAX | Monona | 32 min |
| Jul 4, 6:44 PM CDT | Severe Thunderstorm Warning | OAX | Monona | 13 min |
| Jul 4, 7:25 PM CDT | Severe Thunderstorm Warning | DMX | Crawford | 65 min |
| Jul 4, 8:08 PM CDT | Severe Thunderstorm Warning | DMX | Crawford | 52 min |
| Jul 5, 1:14 PM CDT | Severe Thunderstorm Warning | DVN | Jackson | 46 min |
| Jul 10, 4:17 PM CDT | Severe Thunderstorm Warning | FSD | Sioux | 28 min |
| Jul 10, 4:47 PM CDT | Severe Thunderstorm Warning | FSD | Sioux | 28 min |
| Jul 10, 5:03 PM CDT | Severe Thunderstorm Warning | FSD | Lyon, Sioux | 12 min |
| Jul 10, 5:12 PM CDT | Severe Thunderstorm Warning | FSD | Lyon, O'Brien, Osceola, Sioux | 33 min |
| Jul 10, 5:43 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Dickinson, O'Brien, Osceola | 32 min |
| Jul 10, 5:55 PM CDT | Severe Thunderstorm Warning | DMX | Emmet, Palo Alto | 35 min |
| Jul 10, 6:12 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Dickinson | 33 min |
| Jul 10, 6:28 PM CDT | Severe Thunderstorm Warning | DMX | Emmet, Kossuth, Palo Alto | 62 min |
| Jul 12, 1:00 AM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marshall, Polk, Story | 45 min |
| Jul 12, 3:05 AM CDT | Severe Thunderstorm Warning | DMX | Lucas, Mahaska, Marion, Monroe | 55 min |
| Jul 12, 3:58 AM CDT | Severe Thunderstorm Warning | FSD | Lyon, Sioux | 47 min |
| Jul 12, 4:21 AM CDT | Severe Thunderstorm Warning | FSD | Lyon, Osceola, Sioux | 39 min |
| Jul 12, 4:29 AM CDT | Severe Thunderstorm Warning | FSD | Plymouth, Sioux, Woodbury | 46 min |
| Jul 12, 4:59 AM CDT | Severe Thunderstorm Warning | FSD | Lyon, O'Brien, Osceola, Sioux | 46 min |
| Jul 12, 5:13 AM CDT | Severe Thunderstorm Warning | FSD | Cherokee, Plymouth, Sioux, Woodbury | 47 min |
| Jul 12, 5:17 AM CDT | Severe Thunderstorm Warning | DMX | Hancock, Wright | 16 min |
| Jul 12, 5:18 AM CDT | Severe Thunderstorm Warning | OAX | Harrison, Mills, Monona, Pottawattamie | 57 min |
| Jul 12, 5:40 AM CDT | Severe Thunderstorm Warning | DMX | Boone, Dallas, Polk, Story | 50 min |
| Jul 12, 5:41 AM CDT | Severe Thunderstorm Warning | FSD | Buena Vista, Cherokee, Ida, Plymouth, Woodbury | 64 min |
| Jul 12, 5:50 AM CDT | Severe Thunderstorm Warning | OAX | Harrison, Pottawattamie, Shelby | 40 min |
| Jul 12, 6:05 AM CDT | Severe Thunderstorm Warning | OAX | Fremont, Harrison, Mills, Monona, Montgomery, Page and 2 more | 55 min |
| Jul 12, 6:07 AM CDT | Severe Thunderstorm Warning | DMX | Audubon, Carroll, Cass, Crawford, Sac | 38 min |
| Jul 12, 6:15 AM CDT | Severe Thunderstorm Warning | OAX | Harrison, Pottawattamie, Shelby | 14 min |
| Jul 12, 6:41 AM CDT | Severe Thunderstorm Warning | DMX | Adair, Adams, Audubon, Cass, Crawford, Guthrie and 3 more | 64 min |
| Jul 12, 6:44 AM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills, Montgomery, Page, Pottawattamie | 46 min |
| Jul 12, 7:22 AM CDT | Severe Thunderstorm Warning | DMX | Adair, Clarke, Decatur, Madison, Ringgold, Taylor and 1 more | 38 min |
| Jul 12, 7:41 AM CDT | Severe Thunderstorm Warning | DMX | Adair, Boone, Clarke, Dallas, Madison, Polk and 3 more | 39 min |
| Jul 12, 7:47 AM CDT | Severe Thunderstorm Warning | DMX | Jasper, Mahaska, Poweshiek | 43 min |
| Jul 12, 7:59 AM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Clarke, Decatur, Lucas, Monroe, Ringgold and 1 more | 46 min |
| Jul 12, 8:05 AM CDT | Severe Thunderstorm Warning | DVN | Benton, Iowa, Johnson, Keokuk, Linn, Washington | 55 min |
| Jul 12, 8:18 AM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marshall, Polk, Poweshiek, Story, Tama | 42 min |
| Jul 12, 8:43 AM CDT | Severe Thunderstorm Warning | DVN | Cedar, Johnson, Linn, Louisa, Muscatine, Washington | 47 min |
| Jul 13, 2:19 PM CDT | Severe Thunderstorm Warning | DMX | Hancock, Kossuth, Winnebago | 41 min |
| Jul 13, 2:25 PM CDT | Severe Thunderstorm Warning | DMX | Winnebago | 23 min |
| Jul 13, 2:51 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Hancock, Wright | 39 min |
| Jul 13, 3:39 PM CDT | Severe Thunderstorm Warning | DMX | Butler | 37 min |
| Jul 13, 5:31 PM CDT | Severe Thunderstorm Warning | DMX | Hancock | 44 min |
| Jul 13, 6:08 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Franklin, Hancock, Wright | 37 min |
| Jul 13, 6:14 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Iowa, Linn | 46 min |
| Jul 13, 7:10 PM CDT | Severe Thunderstorm Warning | FSD | Lyon | 50 min |
| Jul 13, 7:53 PM CDT | Severe Thunderstorm Warning | FSD | Lyon, O'Brien, Osceola | 52 min |
| Jul 13, 7:54 PM CDT | Severe Thunderstorm Warning | DMX | Grundy, Hardin, Marshall, Tama | 51 min |
| Jul 13, 8:35 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Dickinson, O'Brien, Osceola | 40 min |
| Jul 13, 8:41 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marshall, Poweshiek, Tama | 49 min |
| Jul 13, 10:03 PM CDT | Severe Thunderstorm Warning | ARX | Chickasaw | 42 min |
| Jul 13, 10:23 PM CDT | Severe Thunderstorm Warning | DMX | Bremer | 25 min |
| Jul 13, 10:24 PM CDT | Severe Thunderstorm Warning | ARX | Fayette | 66 min |
| Jul 13, 10:44 PM CDT | Severe Thunderstorm Warning | DVN | Buchanan | 46 min |
| Jul 14, 3:15 PM CDT | Severe Thunderstorm Warning | DVN | Buchanan, Delaware, Jones, Linn | 45 min |
| Jul 14, 3:25 PM CDT | Severe Thunderstorm Warning | DVN | Delaware, Dubuque, Jackson, Jones | 50 min |
| Jul 14, 4:12 PM CDT | Severe Thunderstorm Warning | DVN | Dubuque, Jackson, Jones | 48 min |
| Jul 14, 4:32 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Jackson, Jones | 58 min |
| Jul 14, 6:22 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines | 38 min |
| Jul 15, 6:00 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Bremer | 15 min |
| Jul 15, 6:45 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk | 34 min |
| Jul 17, 1:09 AM CDT | Severe Thunderstorm Warning | DMX | Adair, Audubon, Cass, Guthrie | 51 min |
| Jul 17, 1:24 AM CDT | Severe Thunderstorm Warning | DMX | Adair, Guthrie, Madison | 51 min |
| Jul 17, 1:40 AM CDT | Severe Thunderstorm Warning | OAX | Harrison, Pottawattamie, Shelby | 50 min |
| Jul 17, 4:58 AM CDT | Severe Thunderstorm Warning | DMX | Audubon, Guthrie | 32 min |
| Jul 17, 5:11 AM CDT | Severe Thunderstorm Warning | OAX | Harrison | 26 min |
| Jul 17, 5:15 AM CDT | Severe Thunderstorm Warning | OAX | Harrison, Monona, Pottawattamie, Shelby | 32 min |
| Jul 17, 5:21 AM CDT | Severe Thunderstorm Warning | DMX | Adair, Audubon, Cass, Guthrie | 39 min |
| Jul 17, 5:32 AM CDT | Severe Thunderstorm Warning | DMX | Audubon, Cass | 28 min |
| Jul 17, 5:52 AM CDT | Severe Thunderstorm Warning | DMX | Adair, Adams, Union | 23 min |
| Jul 17, 6:14 AM CDT | Severe Thunderstorm Warning | DMX | Adams, Ringgold, Taylor, Union | 31 min |
| Jul 17, 6:53 AM CDT | Severe Thunderstorm Warning | DMX | Mahaska, Marion, Monroe, Wapello | 52 min |
| Jul 17, 7:14 AM CDT | Severe Thunderstorm Warning | OAX | Harrison, Shelby | 18 min |
| Jul 17, 7:44 AM CDT | Severe Thunderstorm Warning | DMX | Mahaska, Marion, Monroe, Wapello | 46 min |
| Jul 17, 7:48 AM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 27 min |
| Jul 17, 7:55 AM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 50 min |
| Jul 17, 8:24 AM CDT | Severe Thunderstorm Warning | DMX | Adair, Cass | 51 min |
| Jul 17, 8:26 AM CDT | Severe Thunderstorm Warning | DMX | Mahaska | 34 min |
| Jul 17, 8:28 AM CDT | Severe Thunderstorm Warning | OAX | Mills | 32 min |
| Jul 17, 8:37 AM CDT | Severe Thunderstorm Warning | OAX | Mills, Montgomery, Pottawattamie | 17 min |
| Jul 17, 8:42 AM CDT | Severe Thunderstorm Warning | OAX | Fremont, Montgomery, Page | 48 min |
| Jul 17, 8:59 AM CDT | Severe Thunderstorm Warning | DMX | Adair, Madison, Union | 46 min |
| Jul 17, 11:40 AM CDT | Severe Thunderstorm Warning | DVN | Henry, Jefferson, Lee, Van Buren | 33 min |
| Jul 22, 5:44 PM CDT | Severe Thunderstorm Warning | FSD | Dickinson, O'Brien, Osceola | 46 min |
| Jul 22, 7:13 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Muscatine, Scott | 47 min |
| Jul 22, 9:38 PM CDT | Severe Thunderstorm Warning | ARX | Chickasaw, Fayette, Winneshiek | 52 min |
| Jul 24, 3:04 AM CDT | Severe Thunderstorm Warning | FSD | Plymouth | 41 min |
| Jul 24, 3:56 AM CDT | Severe Thunderstorm Warning | OAX | Monona | 49 min |
| Jul 24, 4:22 AM CDT | Severe Thunderstorm Warning | OAX | Harrison, Monona | 38 min |
| Jul 24, 5:10 AM CDT | Severe Thunderstorm Warning | OAX | Fremont, Harrison, Mills, Montgomery, Page, Pottawattamie | 50 min |
| Jul 24, 5:18 AM CDT | Severe Thunderstorm Warning | OAX | Harrison, Pottawattamie, Shelby | 27 min |
| Jul 26, 3:37 AM CDT | Severe Thunderstorm Warning | FSD | Clay, O'Brien, Osceola | 38 min |
| Jul 26, 4:06 AM CDT | Severe Thunderstorm Warning | FSD | Buena Vista, Clay, O'Brien | 39 min |
| Jul 26, 4:39 AM CDT | Severe Thunderstorm Warning | FSD | Buena Vista | 15 min |
| Jul 26, 4:41 AM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Pocahontas | 24 min |
| Jul 28, 3:20 AM CDT | Severe Thunderstorm Warning | DVN | Clinton, Jackson | 40 min |
| Jul 28, 5:24 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Franklin, Hancock, Wright | 18 min |
| Jul 28, 5:28 PM CDT | Severe Thunderstorm Warning | DMX | Franklin, Hardin | 47 min |
| Jul 28, 5:53 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Bremer | 67 min |
| Jul 28, 6:05 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Monona | 40 min |
| Jul 28, 6:09 PM CDT | Severe Thunderstorm Warning | DMX | Butler, Franklin, Grundy, Hardin | 66 min |
| Jul 28, 6:17 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 13 min |
| Jul 28, 6:28 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Butler, Grundy, Hardin, Marshall, Tama | 47 min |
| Jul 28, 6:32 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Shelby | 28 min |
| Jul 28, 6:53 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Pottawattamie, Shelby | 35 min |
| Jul 28, 7:10 PM CDT | Severe Thunderstorm Warning | ARX | Chickasaw, Fayette, Winneshiek | 35 min |
| Jul 28, 7:12 PM CDT | Severe Thunderstorm Warning | DVN | Buchanan, Delaware | 63 min |
| Jul 28, 7:18 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Grundy, Marshall, Tama | 57 min |
| Jul 28, 7:22 PM CDT | Severe Thunderstorm Warning | DVN | Dubuque | 12 min |
| Jul 28, 7:27 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Buchanan, Linn | 63 min |
| Jul 28, 7:29 PM CDT | Severe Thunderstorm Warning | DVN | Dubuque, Jackson | 46 min |
| Jul 28, 7:40 PM CDT | Severe Thunderstorm Warning | DVN | Benton | 65 min |
| Jul 28, 7:50 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marshall, Poweshiek, Tama | 40 min |
| Jul 28, 7:52 PM CDT | Severe Thunderstorm Warning | DVN | Delaware, Dubuque | 53 min |
| Jul 28, 7:59 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Jackson, Jones, Linn | 61 min |
| Jul 28, 8:08 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Clinton, Jackson, Jones, Linn | 67 min |
| Jul 28, 8:13 PM CDT | Severe Thunderstorm Warning | DVN | Dubuque, Jackson | 47 min |
| Jul 28, 8:14 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Iowa, Johnson, Muscatine | 61 min |
| Jul 28, 8:15 PM CDT | Severe Thunderstorm Warning | ARX | Floyd | 27 min |
| Jul 28, 8:24 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marshall, Poweshiek, Tama | 66 min |
| Jul 28, 8:31 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Clinton, Jackson, Muscatine, Scott | 74 min |
| Jul 28, 8:32 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Jackson | 43 min |
| Jul 28, 8:45 PM CDT | Severe Thunderstorm Warning | DVN | Johnson, Louisa, Muscatine, Washington | 60 min |
| Jul 28, 8:57 PM CDT | Severe Thunderstorm Warning | DVN | Dubuque, Jackson | 48 min |
| Jul 28, 9:27 PM CDT | Severe Thunderstorm Warning | DVN | Iowa, Keokuk, Washington | 39 min |
| Jul 28, 10:34 PM CDT | Severe Thunderstorm Warning | DMX | Mahaska, Monroe, Wapello | 56 min |
| Jul 28, 11:31 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Davis, Monroe, Wapello | 44 min |
| Jul 29, 8:36 AM CDT | Severe Thunderstorm Warning | OAX | Fremont | 39 min |
| Jul 29, 8:47 AM CDT | Severe Thunderstorm Warning | OAX | Fremont | 43 min |
| Jul 30, 4:19 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Monona, Pottawattamie | 41 min |
| Jul 30, 4:50 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Pottawattamie | 25 min |
| Aug 2, 2:12 AM CDT | Severe Thunderstorm Warning | OAX | Harrison, Pottawattamie | 48 min |
| Aug 2, 2:26 AM CDT | Severe Thunderstorm Warning | OAX | Harrison, Pottawattamie, Shelby | 37 min |
| Aug 2, 6:55 AM CDT | Severe Thunderstorm Warning | OAX | Monona | 39 min |
| Aug 5, 3:55 PM CDT | Severe Thunderstorm Warning | FSD | Ida | 16 min |
| Aug 5, 6:39 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, O'Brien | 51 min |
| Aug 5, 6:41 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, Plymouth | 49 min |
| Aug 5, 7:23 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, Ida, Plymouth, Woodbury | 52 min |
| Aug 5, 8:31 PM CDT | Severe Thunderstorm Warning | OAX | Harrison | 29 min |
| Aug 5, 9:28 PM CDT | Severe Thunderstorm Warning | DMX | Audubon, Boone, Calhoun, Carroll, Crawford, Dallas and 3 more | 47 min |
| Aug 5, 9:31 PM CDT | Severe Thunderstorm Warning | OAX | Shelby | 29 min |
| Aug 5, 9:52 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Calhoun, Greene, Webster | 38 min |
| Aug 5, 10:14 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Carroll, Dallas, Greene, Guthrie | 29 min |
| Aug 5, 11:33 PM CDT | Severe Thunderstorm Warning | OAX | Mills | 27 min |
| Aug 5, 11:51 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills | 39 min |
| Aug 6, 12:35 AM CDT | Severe Thunderstorm Warning | OAX | Montgomery, Page | 25 min |
| Aug 6, 3:23 PM CDT | Severe Thunderstorm Warning | DVN | Van Buren | 37 min |
| Aug 10, 11:08 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, O'Brien, Plymouth, Sioux | 52 min |
| Aug 10, 11:49 PM CDT | Severe Thunderstorm Warning | FSD | Buena Vista, Cherokee | 26 min |
| Aug 11, 7:28 PM CDT | Severe Thunderstorm Warning | DMX | Kossuth | 47 min |
| Aug 11, 7:40 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, Clay, O'Brien, Sioux | 50 min |
| Aug 11, 8:00 PM CDT | Severe Thunderstorm Warning | DMX | Hancock, Kossuth | 31 min |
| Aug 11, 8:03 PM CDT | Severe Thunderstorm Warning | DMX | Kossuth | 27 min |
| Aug 11, 8:15 PM CDT | Severe Thunderstorm Warning | FSD | Buena Vista, Cherokee, Clay, O'Brien | 34 min |
| Aug 11, 8:32 PM CDT | Severe Thunderstorm Warning | ARX | Howard, Mitchell | 31 min |
| Aug 11, 8:41 PM CDT | Severe Thunderstorm Warning | DMX | Palo Alto, Pocahontas | 34 min |
| Aug 11, 9:02 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Franklin, Hancock | 43 min |
| Aug 11, 9:05 PM CDT | Severe Thunderstorm Warning | DMX | Humboldt, Kossuth, Palo Alto, Pocahontas | 25 min |
| Aug 11, 9:06 PM CDT | Severe Thunderstorm Warning | DMX | Bremer, Butler | 39 min |
| Aug 11, 9:18 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Franklin | 27 min |
| Aug 11, 9:29 PM CDT | Severe Thunderstorm Warning | DMX | Hancock, Humboldt, Kossuth, Wright | 31 min |
| Aug 11, 9:40 PM CDT | Severe Thunderstorm Warning | DMX | Butler, Franklin | 35 min |
| Aug 11, 9:45 PM CDT | Severe Thunderstorm Warning | DMX | Butler, Cerro Gordo, Franklin | 30 min |
| Aug 11, 9:49 PM CDT | Severe Thunderstorm Warning | DMX | Franklin, Wright | 26 min |
| Aug 11, 9:53 PM CDT | Severe Thunderstorm Warning | FSD | Ida | 22 min |
| Aug 11, 9:57 PM CDT | Severe Thunderstorm Warning | DMX | Sac | 21 min |
| Aug 11, 10:15 PM CDT | Severe Thunderstorm Warning | DMX | Butler, Franklin | 13 min |
| Aug 17, 5:49 AM CDT | Severe Thunderstorm Warning | DVN | Louisa | 41 min |
| Sep 15, 6:03 PM CDT | Severe Thunderstorm Warning | FSD | Lyon, Sioux | 42 min |
| Sep 15, 6:23 PM CDT | Severe Thunderstorm Warning | FSD | O'Brien, Sioux | 37 min |
| Sep 19, 1:19 AM CDT | Severe Thunderstorm Warning | FSD | Ida, Woodbury | 26 min |
| Sep 19, 12:09 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Shelby | 32 min |
| Sep 19, 2:26 PM CDT | Severe Thunderstorm Warning | OAX | Shelby | 49 min |
| Sep 19, 3:26 PM CDT | Severe Thunderstorm Warning | DMX | Greene, Guthrie | 21 min |
| Sep 20, 2:00 AM CDT | Severe Thunderstorm Warning | OAX | Mills | 30 min |
| Sep 20, 3:28 AM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills | 32 min |
| Sep 20, 3:57 AM CDT | Severe Thunderstorm Warning | OAX | Fremont | 11 min |
| Sep 23, 10:24 AM CDT | Severe Thunderstorm Warning | OAX | Harrison | 28 min |
| Sep 23, 11:17 AM CDT | Severe Thunderstorm Warning | OAX | Monona | 11 min |
| Sep 23, 12:23 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Carroll, Crawford, Greene, Pocahontas, Sac and 1 more | 67 min |
| Sep 23, 1:09 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Calhoun, Carroll, Greene, Hamilton, Hancock and 4 more | 66 min |
| Sep 29, 6:20 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth, Sioux | 25 min |
| Oct 3, 7:36 PM CDT | Severe Thunderstorm Warning | OAX | Monona | 39 min |
| Oct 3, 8:09 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Monona, Pottawattamie | 51 min |
| Oct 11, 4:04 PM CDT | Severe Thunderstorm Warning | DVN | Iowa, Johnson, Washington | 22 min |
| Oct 11, 5:09 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Johnson, Jones, Linn | 51 min |
| Oct 11, 5:18 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Linn | 42 min |
| Oct 11, 6:16 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Scott | 44 min |
| Oct 13, 2:59 AM CDT | Severe Thunderstorm Warning | DMX | Audubon, Carroll | 22 min |
| Oct 24, 12:05 AM CDT | Severe Thunderstorm Warning | FSD | Clay, Dickinson | 10 min |
| Oct 24, 12:14 AM CDT | Severe Thunderstorm Warning | FSD | Clay, Dickinson | 16 min |
| Oct 24, 12:30 AM CDT | Severe Thunderstorm Warning | FSD | Clay, Dickinson | 15 min |
| Oct 24, 12:38 AM CDT | Severe Thunderstorm Warning | DMX | Emmet | 34 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Pottawattamie County45
- Harrison County36
- Adair County32
- Mills County30
- Fremont County29
- Jasper County28
- Clinton County27
- Sioux County27
- Union County25
- Polk County25
- Marshall County25
- Linn County25
- Jackson County25
- Plymouth County24
- Madison County24
- Washington County23
- Monona County23
- Jones County22
- Shelby County22
- Marion County21
- Lee County21
- Louisa County21
- Tama County21
- Johnson County21
- Dubuque County21
- Warren County20
- Des Moines County20
- Scott County20
- Benton County20
- Jefferson County20
- Henry County19
- Poweshiek County19
- O'Brien County19
- Delaware County18
- Adams County18
- Dallas County17
- Muscatine County17
- Boone County17
- Story County17
- Mahaska County17
58 more counties
- Buchanan County17
- Iowa County17
- Van Buren County17
- Cedar County17
- Monroe County16
- Page County16
- Cass County16
- Franklin County15
- Guthrie County15
- Montgomery County15
- Woodbury County15
- Ringgold County14
- Hancock County14
- Kossuth County14
- Clarke County13
- Grundy County13
- Greene County13
- Lyon County13
- Cherokee County13
- Hardin County12
- Wapello County12
- Black Hawk County12
- Butler County12
- Taylor County12
- Audubon County12
- Osceola County12
- Decatur County11
- Lucas County11
- Dickinson County11
- Clay County11
- Appanoose County10
- Davis County10
- Keokuk County10
- Crawford County10
- Cerro Gordo County9
- Carroll County9
- Calhoun County9
- Sac County8
- Palo Alto County8
- Wayne County7
- Bremer County7
- Ida County7
- Webster County7
- Pocahontas County7
- Buena Vista County7
- Wright County7
- Chickasaw County6
- Fayette County6
- Hamilton County5
- Winnebago County5
- Floyd County4
- Clayton County4
- Emmet County4
- Humboldt County4
- Worth County3
- Howard County2
- Mitchell County2
- Winneshiek County2
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20222024
Sources
National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Warning verification from the Mesonet's Cow. Rebuilt daily.