Alert archive / Iowa / Severe Thunderstorm Warnings
Severe Thunderstorm Warnings in Iowa, 1986
198 severe thunderstorm warnings in 1986. 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 1986. Tap one for its archive.
- Severe Thunderstorm Warnings
- 198
- Busiest month
- July73 severe thunderstorm warnings
- Busiest day
- July 29, 198624 severe thunderstorm warnings
Over time
By month
The alerts
Every alert, in the order issued. Times are local, Central Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 18, 5:14 PM CST | Severe Thunderstorm Warning | DMX | Jasper | 46 min |
| Apr 4, 6:42 PM CST | Severe Thunderstorm Warning | DMX | Greene, Guthrie | 48 min |
| Apr 4, 7:19 PM CST | Severe Thunderstorm Warning | DMX | Calhoun, Greene | 41 min |
| Apr 4, 7:40 PM CST | Severe Thunderstorm Warning | DMX | Webster | 25 min |
| Apr 24, 10:37 PM CST | Severe Thunderstorm Warning | DMX | Madison, Warren | 33 min |
| Apr 24, 11:07 PM CST | Severe Thunderstorm Warning | DMX | Warren | 38 min |
| Apr 24, 11:39 PM CST | Severe Thunderstorm Warning | DMX | Marion | 36 min |
| Apr 25, 1:17 AM CST | Severe Thunderstorm Warning | DMX | Keokuk, Mahaska, Wapello | 58 min |
| Apr 25, 4:24 PM CST | Severe Thunderstorm Warning | DMX | Floyd | 41 min |
| Apr 25, 4:42 PM CST | Severe Thunderstorm Warning | DMX | Allamakee | 53 min |
| Apr 26, 6:23 PM CST | Severe Thunderstorm Warning | FSD | Lyon, Sioux | 67 min |
| Apr 26, 7:58 PM CST | Severe Thunderstorm Warning | FSD | Osceola | 62 min |
| Apr 26, 8:01 PM CST | Severe Thunderstorm Warning | FSD | Monona | 59 min |
| Apr 26, 8:12 PM CST | Severe Thunderstorm Warning | DMX | Crawford | 33 min |
| Apr 26, 8:41 PM CST | Severe Thunderstorm Warning | DMX | Sac | 34 min |
| Apr 26, 8:45 PM CST | Severe Thunderstorm Warning | DMX | Crawford | 25 min |
| Apr 26, 9:15 PM CST | Severe Thunderstorm Warning | DMX | Sac | 30 min |
| Apr 26, 9:45 PM CST | Severe Thunderstorm Warning | DMX | Sac | 45 min |
| Apr 29, 3:33 PM CDT | Severe Thunderstorm Warning | DMX | Greene | 27 min |
| Apr 29, 5:01 PM CDT | Severe Thunderstorm Warning | DMX | Marshall | 39 min |
| Apr 29, 5:23 PM CDT | Severe Thunderstorm Warning | DMX | Tama | 37 min |
| Apr 29, 6:08 PM CDT | Severe Thunderstorm Warning | DMX | Benton, Iowa | 32 min |
| Apr 29, 6:35 PM CDT | Severe Thunderstorm Warning | DMX | Linn | 35 min |
| Apr 29, 7:00 PM CDT | Severe Thunderstorm Warning | DVN | Jones | 35 min |
| Apr 29, 10:45 PM CDT | Severe Thunderstorm Warning | OAX | Montgomery | 30 min |
| Apr 29, 10:56 PM CDT | Severe Thunderstorm Warning | DMX | Iowa, Poweshiek | 44 min |
| Apr 30, 1:02 AM CDT | Severe Thunderstorm Warning | DMX | Adams, Union | 53 min |
| Apr 30, 7:06 AM CDT | Severe Thunderstorm Warning | OAX | Harrison | 59 min |
| Apr 30, 7:59 AM CDT | Severe Thunderstorm Warning | OAX | Harrison | 56 min |
| Apr 30, 8:03 AM CDT | Severe Thunderstorm Warning | DMX | Guthrie | 27 min |
| Apr 30, 8:20 AM CDT | Severe Thunderstorm Warning | DMX | Guthrie | 40 min |
| Apr 30, 8:20 AM CDT | Severe Thunderstorm Warning | DMX | Audubon, Carroll | 20 min |
| Apr 30, 9:03 AM CDT | Severe Thunderstorm Warning | DMX | Dallas | 24 min |
| Apr 30, 7:59 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 56 min |
| May 6, 12:12 PM CDT | Severe Thunderstorm Warning | DVN | Lee | 18 min |
| May 8, 3:15 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Davis | 45 min |
| May 8, 3:15 PM CDT | Severe Thunderstorm Warning | DMX | Decatur, Wayne | 45 min |
| May 8, 3:48 PM CDT | Severe Thunderstorm Warning | DMX | Lucas, Monroe | 42 min |
| May 8, 4:16 PM CDT | Severe Thunderstorm Warning | DMX | Marion | 44 min |
| May 8, 4:22 PM CDT | Severe Thunderstorm Warning | DMX | Madison | 28 min |
| May 8, 4:28 PM CDT | Severe Thunderstorm Warning | DMX | Warren | 32 min |
| May 8, 5:30 PM CDT | Severe Thunderstorm Warning | DVN | Henry, Lee | 30 min |
| May 8, 6:07 PM CDT | Severe Thunderstorm Warning | FSD | Lyon | 43 min |
| May 9, 5:31 PM CDT | Severe Thunderstorm Warning | DMX | Polk | 29 min |
| May 9, 6:17 PM CDT | Severe Thunderstorm Warning | DMX | Warren | 28 min |
| May 9, 7:09 PM CDT | Severe Thunderstorm Warning | DMX | Dallas, Polk | 21 min |
| May 9, 7:53 PM CDT | Severe Thunderstorm Warning | DMX | Webster | 37 min |
| May 9, 10:08 PM CDT | Severe Thunderstorm Warning | DMX | Ringgold, Taylor | 22 min |
| May 10, 1:22 AM CDT | Severe Thunderstorm Warning | OAX | Mills, Pottawattamie | 53 min |
| May 10, 7:00 PM CDT | Severe Thunderstorm Warning | DMX | Clay | 60 min |
| May 12, 4:18 PM CDT | Severe Thunderstorm Warning | FSD | Osceola | 57 min |
| May 12, 4:35 PM CDT | Severe Thunderstorm Warning | DMX | Dickinson | 40 min |
| May 12, 5:07 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Pottawattamie | 68 min |
| May 12, 5:15 PM CDT | Severe Thunderstorm Warning | DMX | Dickinson | 30 min |
| May 12, 5:50 PM CDT | Severe Thunderstorm Warning | DMX | Clay, Dickinson | 40 min |
| May 12, 5:50 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 55 min |
| May 12, 6:05 PM CDT | Severe Thunderstorm Warning | OAX | Mills | 55 min |
| May 12, 6:31 PM CDT | Severe Thunderstorm Warning | DMX | Buena Vista, Clay | 24 min |
| May 12, 6:45 PM CDT | Severe Thunderstorm Warning | OAX | Harrison | 60 min |
| May 12, 6:59 PM CDT | Severe Thunderstorm Warning | OAX | Mills | 61 min |
| May 12, 7:10 PM CDT | Severe Thunderstorm Warning | OAX | Fremont | 65 min |
| May 12, 7:20 PM CDT | Severe Thunderstorm Warning | DMX | Crawford | 23 min |
| May 12, 7:31 PM CDT | Severe Thunderstorm Warning | OAX | Montgomery, Page | 59 min |
| May 12, 7:36 PM CDT | Severe Thunderstorm Warning | OAX | Harrison | 69 min |
| May 12, 8:08 PM CDT | Severe Thunderstorm Warning | DMX | Taylor | 52 min |
| May 12, 9:50 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Pocahontas | 50 min |
| May 13, 12:36 AM CDT | Severe Thunderstorm Warning | DMX | Jefferson, Wapello | 39 min |
| Jun 10, 11:14 PM CDT | Severe Thunderstorm Warning | DMX | Linn | 31 min |
| Jun 10, 11:26 PM CDT | Severe Thunderstorm Warning | DMX | Washington | 14 min |
| Jun 15, 10:43 PM CDT | Severe Thunderstorm Warning | DMX | Mitchell, Worth | 62 min |
| Jun 20, 2:41 PM CDT | Severe Thunderstorm Warning | FSD | Lyon, Osceola, Sioux | 64 min |
| Jun 21, 4:26 PM CDT | Severe Thunderstorm Warning | DMX | Greene | 34 min |
| Jun 21, 5:31 PM CDT | Severe Thunderstorm Warning | DMX | Mahaska | 44 min |
| Jun 22, 12:17 AM CDT | Severe Thunderstorm Warning | FSD | Lyon, Osceola, Sioux | 58 min |
| Jun 22, 12:35 AM CDT | Severe Thunderstorm Warning | FSD | Plymouth, Woodbury | 55 min |
| Jun 22, 1:05 AM CDT | Severe Thunderstorm Warning | DMX | Dickinson | 35 min |
| Jun 28, 5:03 AM CDT | Severe Thunderstorm Warning | FSD | Lyon, Osceola | 42 min |
| Jun 28, 5:33 AM CDT | Severe Thunderstorm Warning | DMX | Dickinson | 37 min |
| Jun 28, 8:36 AM CDT | Severe Thunderstorm Warning | DMX | Kossuth | 49 min |
| Jun 28, 9:01 AM CDT | Severe Thunderstorm Warning | DMX | Hancock | 59 min |
| Jun 28, 12:38 PM CDT | Severe Thunderstorm Warning | DMX | Marion | 22 min |
| Jun 28, 12:53 PM CDT | Severe Thunderstorm Warning | DMX | Mahaska | 47 min |
| Jun 28, 1:12 PM CDT | Severe Thunderstorm Warning | DMX | Monroe, Wapello | 33 min |
| Jun 29, 5:14 AM CDT | Severe Thunderstorm Warning | DMX | Dallas, Polk | 46 min |
| Jun 29, 6:17 PM CDT | Severe Thunderstorm Warning | FSD | Sioux | 58 min |
| Jun 29, 7:30 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun | 45 min |
| Jun 29, 8:26 PM CDT | Severe Thunderstorm Warning | DMX | Greene | 49 min |
| Jun 29, 9:00 PM CDT | Severe Thunderstorm Warning | DMX | Emmet | 45 min |
| Jun 29, 9:22 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Pottawattamie | 68 min |
| Jun 29, 9:46 PM CDT | Severe Thunderstorm Warning | OAX | Shelby | 29 min |
| Jun 29, 10:00 PM CDT | Severe Thunderstorm Warning | DMX | Guthrie | 40 min |
| Jun 29, 10:18 PM CDT | Severe Thunderstorm Warning | DMX | Cass | 42 min |
| Jun 30, 1:12 AM CDT | Severe Thunderstorm Warning | DMX | Iowa, Poweshiek | 48 min |
| Jul 5, 6:35 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Pottawattamie | 55 min |
| Jul 8, 5:55 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Shelby | 55 min |
| Jul 8, 6:39 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk | 51 min |
| Jul 8, 6:57 PM CDT | Severe Thunderstorm Warning | DVN | Cedar | 33 min |
| Jul 8, 7:08 PM CDT | Severe Thunderstorm Warning | DMX | Audubon | 37 min |
| Jul 8, 7:28 PM CDT | Severe Thunderstorm Warning | DMX | Guthrie | 36 min |
| Jul 8, 7:35 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Scott | 25 min |
| Jul 8, 8:25 PM CDT | Severe Thunderstorm Warning | DMX | Poweshiek | 22 min |
| Jul 8, 9:20 PM CDT | Severe Thunderstorm Warning | DVN | Muscatine, Scott | 40 min |
| Jul 8, 10:45 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Monroe | 30 min |
| Jul 12, 12:26 AM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 64 min |
| Jul 12, 12:26 AM CDT | Severe Thunderstorm Warning | OAX | Harrison, Shelby | 26 min |
| Jul 12, 1:29 AM CDT | Severe Thunderstorm Warning | DMX | Clarke | 46 min |
| Jul 13, 7:44 PM CDT | Severe Thunderstorm Warning | OAX | Harrison | 61 min |
| Jul 13, 7:55 PM CDT | Severe Thunderstorm Warning | DMX | Cass | 65 min |
| Jul 13, 7:57 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 63 min |
| Jul 13, 9:19 PM CDT | Severe Thunderstorm Warning | DMX | Adair | 56 min |
| Jul 13, 9:40 PM CDT | Severe Thunderstorm Warning | DMX | Cass | 35 min |
| Jul 13, 10:13 PM CDT | Severe Thunderstorm Warning | DMX | Audubon, Cass | 32 min |
| Jul 13, 10:36 PM CDT | Severe Thunderstorm Warning | DMX | Adair | 39 min |
| Jul 13, 11:04 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Madison, Union | 36 min |
| Jul 13, 11:40 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Lucas | 60 min |
| Jul 14, 12:15 AM CDT | Severe Thunderstorm Warning | DMX | Clarke, Decatur, Lucas, Wayne | 45 min |
| Jul 14, 12:58 AM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Wayne | 62 min |
| Jul 14, 3:00 AM CDT | Severe Thunderstorm Warning | DMX | Adair | 30 min |
| Jul 14, 9:18 AM CDT | Severe Thunderstorm Warning | DMX | Clay | 42 min |
| Jul 15, 12:05 PM CDT | Severe Thunderstorm Warning | DMX | Kossuth | 35 min |
| Jul 15, 12:11 PM CDT | Severe Thunderstorm Warning | DMX | Winnebago | 29 min |
| Jul 19, 5:04 AM CDT | Severe Thunderstorm Warning | DMX | Buena Vista | 41 min |
| Jul 19, 5:35 PM CDT | Severe Thunderstorm Warning | DVN | Louisa | 40 min |
| Jul 24, 6:30 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth, Woodbury | 60 min |
| Jul 24, 7:17 PM CDT | Severe Thunderstorm Warning | FSD | Monona | 58 min |
| Jul 24, 7:19 PM CDT | Severe Thunderstorm Warning | DMX | Pocahontas | 26 min |
| Jul 24, 7:33 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth, Woodbury | 57 min |
| Jul 24, 8:24 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee | 26 min |
| Jul 24, 9:55 PM CDT | Severe Thunderstorm Warning | DMX | Dallas, Guthrie | 35 min |
| Jul 24, 10:33 PM CDT | Severe Thunderstorm Warning | DMX | Polk | 27 min |
| Jul 24, 11:42 PM CDT | Severe Thunderstorm Warning | DMX | Iowa, Johnson, Linn | 33 min |
| Jul 27, 4:16 PM CDT | Severe Thunderstorm Warning | DMX | Polk | 44 min |
| Jul 27, 7:57 PM CDT | Severe Thunderstorm Warning | DMX | Howard, Winneshiek | 48 min |
| Jul 27, 7:57 PM CDT | Severe Thunderstorm Warning | DMX | Allamakee | 48 min |
| Jul 27, 8:53 PM CDT | Severe Thunderstorm Warning | DMX | Floyd | 62 min |
| Jul 27, 9:13 PM CDT | Severe Thunderstorm Warning | DVN | Clayton | 62 min |
| Jul 27, 9:32 PM CDT | Severe Thunderstorm Warning | DMX | Bremer, Chickasaw | 58 min |
| Jul 28, 6:24 PM CDT | Severe Thunderstorm Warning | FSD | O'Brien | 66 min |
| Jul 28, 6:28 PM CDT | Severe Thunderstorm Warning | FSD | Sioux | 62 min |
| Jul 28, 6:58 PM CDT | Severe Thunderstorm Warning | DMX | Dickinson | 62 min |
| Jul 28, 7:03 PM CDT | Severe Thunderstorm Warning | FSD | Osceola | 57 min |
| Jul 28, 7:03 PM CDT | Severe Thunderstorm Warning | FSD | Lyon | 57 min |
| Jul 28, 7:07 PM CDT | Severe Thunderstorm Warning | DMX | Clay | 63 min |
| Jul 28, 7:29 PM CDT | Severe Thunderstorm Warning | FSD | O'Brien | 61 min |
| Jul 28, 8:02 PM CDT | Severe Thunderstorm Warning | FSD | Sioux | 58 min |
| Jul 28, 8:51 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Pocahontas, Webster | 64 min |
| Jul 28, 9:02 PM CDT | Severe Thunderstorm Warning | FSD | Monona | 58 min |
| Jul 28, 9:22 PM CDT | Severe Thunderstorm Warning | DMX | Carroll, Greene | 58 min |
| Jul 28, 9:48 PM CDT | Severe Thunderstorm Warning | DMX | Guthrie | 42 min |
| Jul 28, 9:48 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Dallas, Hamilton | 42 min |
| Jul 28, 10:14 PM CDT | Severe Thunderstorm Warning | DMX | Polk, Story | 46 min |
| Jul 28, 10:14 PM CDT | Severe Thunderstorm Warning | DMX | Madison | 46 min |
| Jul 28, 10:31 PM CDT | Severe Thunderstorm Warning | DMX | Warren | 49 min |
| Jul 28, 10:31 PM CDT | Severe Thunderstorm Warning | DMX | Marshall | 49 min |
| Jul 28, 10:46 PM CDT | Severe Thunderstorm Warning | DMX | Marion | 54 min |
| Jul 28, 10:54 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Lucas | 46 min |
| Jul 28, 11:16 PM CDT | Severe Thunderstorm Warning | DMX | Mahaska, Monroe | 44 min |
| Jul 28, 11:16 PM CDT | Severe Thunderstorm Warning | DMX | Poweshiek | 44 min |
| Jul 28, 11:22 PM CDT | Severe Thunderstorm Warning | DMX | Adair | 98 min |
| Jul 28, 11:47 PM CDT | Severe Thunderstorm Warning | DMX | Keokuk, Wapello | 43 min |
| Jul 28, 11:47 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Davis | 43 min |
| Jul 29, 12:10 AM CDT | Severe Thunderstorm Warning | DMX | Jefferson, Van Buren | 50 min |
| Jul 29, 12:43 AM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Henry, Lee | 47 min |
| Jul 29, 12:50 AM CDT | Severe Thunderstorm Warning | DMX | Decatur, Wayne | 55 min |
| Jul 30, 10:54 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 66 min |
| Jul 30, 11:15 PM CDT | Severe Thunderstorm Warning | DMX | Cass | 37 min |
| Aug 1, 6:46 PM CDT | Severe Thunderstorm Warning | FSD | Lyon, Osceola | 59 min |
| Aug 1, 7:28 PM CDT | Severe Thunderstorm Warning | FSD | O'Brien | 62 min |
| Aug 7, 7:08 PM CDT | Severe Thunderstorm Warning | DVN | Jones | 27 min |
| Aug 17, 12:10 AM CDT | Severe Thunderstorm Warning | FSD | Woodbury | 65 min |
| Aug 17, 12:30 AM CDT | Severe Thunderstorm Warning | FSD | Monona | 60 min |
| Aug 17, 1:17 AM CDT | Severe Thunderstorm Warning | OAX | Harrison | 38 min |
| Sep 10, 6:00 PM CDT | Severe Thunderstorm Warning | DVN | Jones | 30 min |
| Sep 10, 6:00 PM CDT | Severe Thunderstorm Warning | DVN | Dubuque | 45 min |
| Sep 18, 7:05 PM CDT | Severe Thunderstorm Warning | DMX | Cass | 20 min |
| Sep 18, 7:32 PM CDT | Severe Thunderstorm Warning | DMX | Adair | 48 min |
| Sep 20, 7:16 AM CDT | Severe Thunderstorm Warning | FSD | Woodbury | 44 min |
| Sep 20, 7:39 AM CDT | Severe Thunderstorm Warning | DMX | Hamilton | 36 min |
| Sep 20, 8:17 AM CDT | Severe Thunderstorm Warning | DMX | Hamilton | 28 min |
| Sep 20, 8:42 AM CDT | Severe Thunderstorm Warning | DMX | Hardin, Story | 28 min |
| Sep 20, 10:52 AM CDT | Severe Thunderstorm Warning | DMX | Iowa, Poweshiek | 28 min |
| Sep 22, 11:32 AM CDT | Severe Thunderstorm Warning | OAX | Mills, Pottawattamie | 58 min |
| Sep 22, 2:54 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills | 66 min |
| Sep 22, 2:55 PM CDT | Severe Thunderstorm Warning | DMX | Adams, Taylor | 55 min |
| Sep 22, 3:37 PM CDT | Severe Thunderstorm Warning | DMX | Ringgold, Union | 53 min |
| Sep 22, 3:50 PM CDT | Severe Thunderstorm Warning | DMX | Adams, Taylor | 50 min |
| Sep 22, 3:53 PM CDT | Severe Thunderstorm Warning | OAX | Page | 67 min |
| Sep 22, 3:55 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Lucas | 65 min |
| Sep 22, 4:33 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Decatur, Union | 41 min |
| Sep 26, 6:56 PM CDT | Severe Thunderstorm Warning | DMX | Humboldt | 44 min |
| Sep 26, 7:06 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo, Hancock | 54 min |
| Sep 26, 8:02 PM CDT | Severe Thunderstorm Warning | DMX | Hamilton, Hardin | 28 min |
| Sep 28, 5:42 PM CDT | Severe Thunderstorm Warning | FSD | Lyon | 63 min |
| Sep 28, 5:45 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marshall | 30 min |
| Sep 28, 6:05 PM CDT | Severe Thunderstorm Warning | FSD | Osceola, Sioux | 55 min |
| Sep 28, 7:25 PM CDT | Severe Thunderstorm Warning | OAX | Harrison, Pottawattamie | 35 min |
| Sep 28, 7:26 PM CDT | Severe Thunderstorm Warning | DMX | Benton | 34 min |
| Sep 28, 8:34 PM CDT | Severe Thunderstorm Warning | DMX | Dallas, Polk | 26 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Harrison County12
- Pottawattamie County11
- Lyon County8
- Osceola County8
- Guthrie County7
- Sioux County7
- Polk County7
- Clarke County7
- Greene County6
- Dallas County6
- Dickinson County6
- Cass County6
- Warren County5
- Iowa County5
- Poweshiek County5
- Lucas County5
- Mills County5
- Clay County5
- Woodbury County5
- Adair County5
- Calhoun County4
- Madison County4
- Marion County4
- Mahaska County4
- Wapello County4
- Monona County4
- Union County4
- Appanoose County4
- Decatur County4
- Wayne County4
- Monroe County4
- Taylor County4
- Hamilton County4
- Webster County3
- Crawford County3
- Sac County3
- Marshall County3
- Linn County3
- Jones County3
- Adams County3
49 more counties
- Audubon County3
- Lee County3
- Pocahontas County3
- Plymouth County3
- Shelby County3
- O'Brien County3
- Jasper County2
- Keokuk County2
- Floyd County2
- Allamakee County2
- Benton County2
- Montgomery County2
- Carroll County2
- Davis County2
- Henry County2
- Ringgold County2
- Buena Vista County2
- Fremont County2
- Page County2
- Jefferson County2
- Kossuth County2
- Hancock County2
- Scott County2
- Story County2
- Hardin County2
- Tama County1
- Washington County1
- Mitchell County1
- Worth County1
- Emmet County1
- Black Hawk County1
- Cedar County1
- Clinton County1
- Muscatine County1
- Winnebago County1
- Louisa County1
- Cherokee County1
- Johnson County1
- Howard County1
- Winneshiek County1
- Clayton County1
- Bremer County1
- Chickasaw County1
- Boone County1
- Van Buren County1
- Des Moines County1
- Dubuque County1
- Humboldt County1
- Cerro Gordo County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
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.