Alert archive / Iowa / Severe Thunderstorm Warnings / 2021
Severe Thunderstorm Warnings in Iowa, June 2021
97 severe thunderstorm warnings in June 2021. 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 June 2021. Tap one for its archive.
- Severe Thunderstorm Warnings
- 97
- Busiest day
- June 19, 202136 severe thunderstorm warnings
Over time
By day
Days in UTC, the clock the archive keeps.
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 |
|---|---|---|---|---|
| Jun 11, 7:10 AM CDT | Severe Thunderstorm Warning | OAX | Monona | 35 min |
| Jun 11, 7:34 AM CDT | Severe Thunderstorm Warning | OAX | Monona | 26 min |
| Jun 11, 7:50 AM CDT | Severe Thunderstorm Warning | OAX | Harrison, Monona | 40 min |
| Jun 11, 2:33 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines | 20 min |
| Jun 16, 6:31 PM CDT | Severe Thunderstorm Warning | FSD | Lyon, Osceola | 29 min |
| Jun 16, 8:38 PM CDT | Severe Thunderstorm Warning | FSD | Buena Vista, Cherokee, Clay, O'Brien | 37 min |
| Jun 16, 8:57 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Sac | 63 min |
| Jun 16, 9:00 PM CDT | Severe Thunderstorm Warning | FSD | Buena Vista, Cherokee, Ida | 45 min |
| Jun 16, 9:39 PM CDT | Severe Thunderstorm Warning | DMX | Carroll, Crawford | 51 min |
| Jun 16, 9:47 PM CDT | Severe Thunderstorm Warning | FSD | Ida | 28 min |
| Jun 16, 10:04 PM CDT | Severe Thunderstorm Warning | FSD | Ida | 9 min |
| Jun 16, 10:23 PM CDT | Severe Thunderstorm Warning | DMX | Audubon, Carroll, Greene, Guthrie | 53 min |
| Jun 18, 9:56 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Lucas, Madison, Marion, Warren | 49 min |
| Jun 18, 10:06 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Clarke, Madison, Union | 39 min |
| Jun 18, 10:17 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Henry, Louisa, Washington | 58 min |
| Jun 18, 10:39 PM CDT | Severe Thunderstorm Warning | DMX | Lucas, Monroe, Wayne | 51 min |
| Jun 18, 10:43 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Lucas, Madison, Union, Warren | 47 min |
| Jun 18, 10:45 PM CDT | Severe Thunderstorm Warning | DMX | Mahaska, Marion, Monroe, Wapello | 45 min |
| Jun 18, 10:54 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Cass | 51 min |
| Jun 18, 11:03 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines | 27 min |
| Jun 18, 11:05 PM CDT | Severe Thunderstorm Warning | DMX | Mahaska, Marion | 25 min |
| Jun 18, 11:07 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 38 min |
| Jun 18, 11:10 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Lucas, Monroe, Wayne | 50 min |
| Jun 18, 11:14 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Madison | 46 min |
| Jun 18, 11:19 PM CDT | Severe Thunderstorm Warning | DMX | Mahaska | 26 min |
| Jun 18, 11:21 PM CDT | Severe Thunderstorm Warning | DVN | Henry, Jefferson | 39 min |
| Jun 18, 11:22 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Davis, Monroe, Wapello | 53 min |
| Jun 18, 11:25 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Decatur, Lucas, Wayne | 50 min |
| Jun 18, 11:27 PM CDT | Severe Thunderstorm Warning | OAX | Mills | 38 min |
| Jun 18, 11:29 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Henry, Louisa | 46 min |
| Jun 18, 11:32 PM CDT | Severe Thunderstorm Warning | DMX | Cass | 28 min |
| Jun 18, 11:37 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Adams, Union | 53 min |
| Jun 18, 11:43 PM CDT | Severe Thunderstorm Warning | OAX | Montgomery, Pottawattamie | 47 min |
| Jun 18, 11:47 PM CDT | Severe Thunderstorm Warning | DVN | Louisa, Washington | 29 min |
| Jun 18, 11:54 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Madison, Warren | 36 min |
| Jun 18, 11:55 PM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Lucas, Monroe, Wayne | 50 min |
| Jun 18, 11:56 PM CDT | Severe Thunderstorm Warning | OAX | Pottawattamie | 38 min |
| Jun 18, 11:59 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Adams, Clarke, Madison, Ringgold, Union | 46 min |
| Jun 19, 12:02 AM CDT | Severe Thunderstorm Warning | DVN | Keokuk, Washington | 43 min |
| Jun 19, 12:12 AM CDT | Severe Thunderstorm Warning | DVN | Jefferson, Keokuk, Van Buren, Washington | 48 min |
| Jun 19, 12:13 AM CDT | Severe Thunderstorm Warning | DMX | Adams | 26 min |
| Jun 19, 12:14 AM CDT | Severe Thunderstorm Warning | DMX | Davis, Wapello | 31 min |
| Jun 19, 12:25 AM CDT | Severe Thunderstorm Warning | DMX | Clarke, Lucas, Marion, Warren | 35 min |
| Jun 19, 12:27 AM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Louisa | 27 min |
| Jun 19, 12:29 AM CDT | Severe Thunderstorm Warning | DMX | Appanoose, Davis | 46 min |
| Jun 19, 12:44 AM CDT | Severe Thunderstorm Warning | DMX | Lucas, Marion, Monroe | 31 min |
| Jun 19, 1:08 AM CDT | Severe Thunderstorm Warning | DVN | Lee, Van Buren | 49 min |
| Jun 19, 4:33 AM CDT | Severe Thunderstorm Warning | DVN | Lee, Van Buren | 57 min |
| Jun 20, 4:20 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Madison, Union | 55 min |
| Jun 20, 4:47 PM CDT | Severe Thunderstorm Warning | DMX | Jasper | 43 min |
| Jun 20, 4:53 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Decatur, Ringgold, Union | 52 min |
| Jun 20, 4:54 PM CDT | Severe Thunderstorm Warning | DMX | Bremer, Butler, Franklin | 51 min |
| Jun 20, 5:33 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Poweshiek | 42 min |
| Jun 20, 5:35 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Decatur, Lucas, Wayne | 40 min |
| Jun 20, 5:55 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Mahaska, Marion | 50 min |
| Jun 20, 5:59 PM CDT | Severe Thunderstorm Warning | DMX | Decatur, Wayne | 46 min |
| Jun 20, 6:13 PM CDT | Severe Thunderstorm Warning | DMX | Poweshiek | 62 min |
| Jun 20, 6:15 PM CDT | Severe Thunderstorm Warning | DMX | Decatur, Wayne | 30 min |
| Jun 20, 6:20 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk | 55 min |
| Jun 20, 6:43 PM CDT | Severe Thunderstorm Warning | DMX | Decatur, Wayne | 47 min |
| Jun 20, 7:08 PM CDT | Severe Thunderstorm Warning | DVN | Iowa, Keokuk | 38 min |
| Jun 20, 7:08 PM CDT | Severe Thunderstorm Warning | DVN | Delaware, Dubuque, Jones, Linn | 52 min |
| Jun 20, 7:17 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Tama | 43 min |
| Jun 20, 7:37 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Buchanan, Linn | 38 min |
| Jun 20, 7:59 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Poweshiek, Tama | 20 min |
| Jun 20, 8:04 PM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Henry, Lee, Van Buren | 41 min |
| Jun 20, 8:18 PM CDT | Severe Thunderstorm Warning | DVN | Keokuk, Washington | 42 min |
| Jun 20, 8:19 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Jackson, Jones | 41 min |
| Jun 20, 8:53 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Jackson | 67 min |
| Jun 22, 4:59 PM CDT | Severe Thunderstorm Warning | DMX | Dallas, Polk | 46 min |
| Jun 22, 5:22 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Sac | 38 min |
| Jun 22, 5:27 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Buchanan, Delaware, Linn | 48 min |
| Jun 22, 5:30 PM CDT | Severe Thunderstorm Warning | DMX | Polk | 45 min |
| Jun 22, 5:50 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun | 40 min |
| Jun 22, 5:58 PM CDT | Severe Thunderstorm Warning | DMX | Polk, Warren | 47 min |
| Jun 22, 6:09 PM CDT | Severe Thunderstorm Warning | DMX | Boone, Calhoun, Carroll, Greene, Webster | 51 min |
| Jun 22, 6:09 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, Ida, Plymouth, Woodbury | 36 min |
| Jun 22, 6:24 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, Ida, Plymouth, Woodbury | 36 min |
| Jun 22, 6:30 PM CDT | Severe Thunderstorm Warning | DMX | Lucas, Marion, Warren | 45 min |
| Jun 22, 6:33 PM CDT | Severe Thunderstorm Warning | DMX | Carroll, Greene | 42 min |
| Jun 22, 6:49 PM CDT | Severe Thunderstorm Warning | DMX | Dallas, Guthrie | 41 min |
| Jun 22, 6:52 PM CDT | Severe Thunderstorm Warning | FSD | Cherokee, Ida, Plymouth, Woodbury | 24 min |
| Jun 22, 6:57 PM CDT | Severe Thunderstorm Warning | DVN | Jefferson, Keokuk | 33 min |
| Jun 22, 7:15 PM CDT | Severe Thunderstorm Warning | DVN | Van Buren | 45 min |
| Jun 22, 7:56 PM CDT | Severe Thunderstorm Warning | DVN | Van Buren | 49 min |
| Jun 24, 1:43 AM CDT | Severe Thunderstorm Warning | OAX | Monona | 47 min |
| Jun 24, 2:15 AM CDT | Severe Thunderstorm Warning | OAX | Harrison, Mills, Monona, Pottawattamie | 60 min |
| Jun 24, 2:51 AM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills, Montgomery | 39 min |
| Jun 24, 2:54 AM CDT | Severe Thunderstorm Warning | OAX | Mills | 36 min |
| Jun 24, 3:17 AM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills, Montgomery, Page | 58 min |
| Jun 24, 6:43 PM CDT | Severe Thunderstorm Warning | OAX | Fremont | 47 min |
| Jun 24, 7:03 PM CDT | Severe Thunderstorm Warning | DMX | Wapello | 42 min |
| Jun 24, 7:23 PM CDT | Severe Thunderstorm Warning | DVN | Jefferson, Van Buren | 40 min |
| Jun 24, 8:04 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Page | 26 min |
| Jun 24, 11:20 PM CDT | Severe Thunderstorm Warning | DMX | Davis | 25 min |
| Jun 24, 11:34 PM CDT | Severe Thunderstorm Warning | DVN | Van Buren | 41 min |
| Jun 24, 11:44 PM CDT | Severe Thunderstorm Warning | DVN | Lee | 46 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Clarke County10
- Lucas County10
- Wayne County8
- Van Buren County8
- Madison County7
- Marion County7
- Des Moines County6
- Ida County6
- Warren County6
- Union County6
- Monroe County6
- Decatur County6
- Monona County5
- Cherokee County5
- Adair County5
- Washington County5
- Mills County5
- Keokuk County5
- Calhoun County4
- Carroll County4
- Henry County4
- Louisa County4
- Mahaska County4
- Wapello County4
- Pottawattamie County4
- Appanoose County4
- Jefferson County4
- Davis County4
- Lee County4
- Jasper County4
- Fremont County4
- Greene County3
- Adams County3
- Montgomery County3
- Poweshiek County3
- Linn County3
- Polk County3
- Plymouth County3
- Woodbury County3
- Harrison County2
28 more counties
- Buena Vista County2
- Sac County2
- Guthrie County2
- Cass County2
- Ringgold County2
- Black Hawk County2
- Delaware County2
- Jones County2
- Tama County2
- Benton County2
- Buchanan County2
- Clinton County2
- Jackson County2
- Dallas County2
- Page County2
- Lyon County1
- Osceola County1
- Clay County1
- O'Brien County1
- Crawford County1
- Audubon County1
- Bremer County1
- Butler County1
- Franklin County1
- Iowa County1
- Dubuque County1
- Boone County1
- Webster County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20202022
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.