Alert archive / Iowa / Flash Flood Warnings
Flash Flood Warnings in Iowa, 2026
89 flash flood warnings in 2026. 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 flash flood warnings reaches back to 1986.
Flash Flood Warnings by county
Each county as a circle sized by its count in 2026. Tap one for its archive.
- Flash Flood Warnings
- 89
- Busiest month
- June21 flash flood warnings
- Busiest day
- June 11, 20267 flash flood 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 |
|---|---|---|---|---|
| Apr 3, 8:58 PM CDT | Flash Flood Warning | ARX | Allamakee, Winneshiek | 4 hr |
| Apr 14, 7:12 PM CDT | Flash Flood Warning | DVN | Dubuque, Jackson, Jones | 3 hr |
| Apr 14, 8:17 PM CDT | Flash Flood Warning | DVN | Delaware | 2 hr |
| Apr 15, 5:18 PM CDT | Flash Flood Warning | DVN | Buchanan, Delaware | 4 hr |
| Apr 15, 6:00 PM CDT | Flash Flood Warning | DVN | Benton | 3 hr |
| Apr 15, 7:00 PM CDT | Flash Flood Warning | DVN | Buchanan, Delaware, Dubuque, Jackson, Jones, Linn | 4 hr |
| Apr 15, 8:14 PM CDT | Flash Flood Warning | DVN | Jackson, Jones | 3 hr |
| Apr 17, 2:23 PM CDT | Flash Flood Warning | DVN | Dubuque, Jackson | 6 hr |
| Apr 23, 5:56 PM CDT | Flash Flood Warning | OAX | Montgomery, Pottawattamie | 3 hr |
| Apr 27, 9:54 AM CDT | Flash Flood Warning | DVN | Lee | 104 min |
| May 16, 6:49 PM CDT | Flash Flood Warning | OAX | Montgomery | 3 hr |
| May 17, 1:10 AM CDT | Flash Flood Warning | FSD | Plymouth | 4 hr |
| May 17, 8:03 PM CDT | Flash Flood Warning | FSD | Plymouth, Sioux | 3 hr |
| May 18, 9:17 PM CDT | Flash Flood Warning | DMX | Decatur, Ringgold, Taylor | 6 hr |
| May 31, 2:43 AM CDT | Flash Flood Warning | DMX | Taylor | 3 hr |
| Jun 4, 4:25 PM CDT | Flash Flood Warning | OAX | Fremont, Montgomery, Page | 5 hr |
| Jun 5, 10:28 PM CDT | Flash Flood Warning | OAX | Mills | 3 hr |
| Jun 5, 10:44 PM CDT | Flash Flood Warning | DMX | Marion, Warren | 4 hr |
| Jun 5, 11:23 PM CDT | Flash Flood Warning | DMX | Adair, Adams, Cass, Clarke, Madison, Union | 4 hr |
| Jun 5, 11:42 PM CDT | Flash Flood Warning | DMX | Marion | 3 hr |
| Jun 6, 1:33 AM CDT | Flash Flood Warning | DMX | Appanoose, Lucas, Marion, Monroe, Wayne | 5 hr |
| Jun 7, 12:34 PM CDT | Flash Flood Warning | DVN | Cedar, Clinton, Muscatine | 3 hr |
| Jun 7, 1:47 PM CDT | Flash Flood Warning | DVN | Scott | 2 hr |
| Jun 10, 6:55 PM CDT | Flash Flood Warning | DMX | Appanoose, Davis | 6 hr |
| Jun 10, 8:19 PM CDT | Flash Flood Warning | DVN | Lee | 5 hr |
| Jun 10, 9:07 PM CDT | Flash Flood Warning | DMX | Lucas | 6 hr |
| Jun 11, 5:23 AM CDT | Flash Flood Warning | OAX | Fremont, Mills | 3 hr |
| Jun 11, 5:49 AM CDT | Flash Flood Warning | OAX | Fremont, Mills, Montgomery, Page | 3 hr |
| Jun 11, 6:29 AM CDT | Flash Flood Warning | OAX | Fremont, Page | 2 hr |
| Jun 11, 7:13 AM CDT | Flash Flood Warning | DMX | Adair, Adams, Madison, Union | 3 hr |
| Jun 11, 2:56 PM CDT | Flash Flood Warning | DVN | Dubuque | 4 hr |
| Jun 17, 7:24 AM CDT | Flash Flood Warning | DVN | Johnson, Linn | 6 hr |
| Jun 17, 7:55 AM CDT | Flash Flood Warning | DVN | Cedar, Iowa, Johnson, Jones, Keokuk, Linn and 3 more | 5 hr |
| Jun 17, 8:25 AM CDT | Flash Flood Warning | DVN | Cedar, Clinton, Muscatine, Scott | 5 hr |
| Jun 17, 8:43 AM CDT | Flash Flood Warning | DVN | Des Moines, Henry, Jefferson | 3 hr |
| Jun 30, 4:37 AM CDT | Flash Flood Warning | FSD | Woodbury | 2 hr |
| Jul 2, 6:58 PM CDT | Flash Flood Warning | DMX | Black Hawk, Grundy, Marshall, Tama | 6 hr |
| Jul 2, 8:13 PM CDT | Flash Flood Warning | DMX | Polk, Story | 6 hr |
| Jul 2, 11:16 PM CDT | Flash Flood Warning | DMX | Jasper, Polk | 6 hr |
| Jul 3, 1:01 AM CDT | Flash Flood Warning | DMX | Polk | 4 hr |
| Jul 3, 2:14 AM CDT | Flash Flood Warning | FSD | Woodbury | 3 hr |
| Jul 3, 4:32 AM CDT | Flash Flood Warning | DMX | Story | 6 hr |
| Jul 3, 7:50 PM CDT | Flash Flood Warning | DVN | Scott | 3 hr |
| Jul 4, 12:41 AM CDT | Flash Flood Warning | DMX | Marshall, Story | 6 hr |
| Jul 4, 2:18 AM CDT | Flash Flood Warning | DMX | Jasper, Marshall, Story | 4 hr |
| Jul 4, 2:26 AM CDT | Flash Flood Warning | DMX | Boone, Dallas, Hamilton, Jasper, Polk, Story and 1 more | 4 hr |
| Jul 4, 3:15 AM CDT | Flash Flood Warning | DMX | Calhoun, Carroll, Greene, Sac | 6 hr |
| Jul 8, 5:33 PM CDT | Flash Flood Warning | ARX | Howard, Mitchell | 3 hr |
| Jul 8, 7:27 PM CDT | Flash Flood Warning | ARX | Floyd, Mitchell | 3 hr |
| Jul 8, 7:29 PM CDT | Flash Flood Warning | DMX | Cerro Gordo, Worth | 6 hr |
| Jul 20, 11:36 AM CDT | Flash Flood Warning | DVN | Cedar, Muscatine, Scott | 3 hr |
| Jul 20, 7:35 PM CDT | Flash Flood Warning | DMX | Boone, Jasper, Marshall, Polk, Story | 6 hr |
| Jul 20, 8:18 PM CDT | Flash Flood Warning | DMX | Jasper, Polk | 6 hr |
| Jul 20, 9:07 PM CDT | Flash Flood Warning | DMX | Dallas, Polk | 6 hr |
| Aug 5, 12:07 AM CDT | Flash Flood Warning | OAX | Mills, Pottawattamie | 5 hr |
| Aug 5, 7:12 AM CDT | Flash Flood Warning | DMX | Clarke, Decatur, Lucas, Wayne | 6 hr |
| Aug 9, 5:48 AM CDT | Flash Flood Warning | DMX | Webster | 3 hr |
| Aug 12, 6:19 AM CDT | Flash Flood Warning | DVN | Benton, Iowa, Johnson, Linn | 3 hr |
| Aug 12, 7:18 AM CDT | Flash Flood Warning | DVN | Scott | 94 min |
| Aug 12, 10:33 AM CDT | Flash Flood Warning | DMX | Hardin | 3 hr |
| Aug 13, 5:25 AM CDT | Flash Flood Warning | OAX | Monona | 2 hr |
| Aug 14, 3:44 AM CDT | Flash Flood Warning | DVN | Des Moines | 6 hr |
| Aug 14, 4:16 AM CDT | Flash Flood Warning | OAX | Harrison | 3 hr |
| Aug 14, 4:41 AM CDT | Flash Flood Warning | OAX | Pottawattamie, Shelby | 3 hr |
| Aug 14, 4:52 AM CDT | Flash Flood Warning | DMX | Adair, Audubon, Cass, Guthrie | 3 hr |
| Aug 14, 4:59 AM CDT | Flash Flood Warning | DVN | Des Moines, Louisa | 6 hr |
| Aug 14, 5:33 AM CDT | Flash Flood Warning | DVN | Keokuk, Washington | 5 hr |
| Aug 14, 5:38 AM CDT | Flash Flood Warning | FSD | Woodbury | 3 hr |
| Aug 15, 12:58 AM CDT | Flash Flood Warning | DVN | Lee | 6 hr |
| Aug 15, 3:19 AM CDT | Flash Flood Warning | DVN | Des Moines, Henry, Jefferson, Lee, Van Buren | 5 hr |
| Aug 15, 9:23 PM CDT | Flash Flood Warning | DVN | Louisa | 6 hr |
| Aug 19, 4:36 PM CDT | Flash Flood Warning | DVN | Des Moines, Henry, Lee | 2 hr |
| Sep 6, 11:58 AM CDT | Flash Flood Warning | FSD | Lyon, Osceola | 4 hr |
| Sep 6, 12:02 PM CDT | Flash Flood Warning | DMX | Emmet, Palo Alto | 6 hr |
| Sep 6, 2:11 PM CDT | Flash Flood Warning | FSD | Cherokee | 4 hr |
| Sep 6, 4:19 PM CDT | Flash Flood Warning | DMX | Crawford | 3 hr |
| Sep 6, 4:33 PM CDT | Flash Flood Warning | OAX | Shelby | 2 hr |
| Sep 7, 3:02 AM CDT | Flash Flood Warning | FSD | Plymouth, Woodbury | 3 hr |
| Sep 8, 6:29 PM CDT | Flash Flood Warning | DMX | Dallas, Polk | 6 hr |
| Sep 9, 1:49 AM CDT | Flash Flood Warning | DMX | Adair, Audubon, Cass, Dallas, Guthrie, Madison and 2 more | 5 hr |
| Sep 9, 2:30 AM CDT | Flash Flood Warning | OAX | Harrison, Mills, Pottawattamie, Shelby | 3 hr |
| Sep 15, 3:01 AM CDT | Flash Flood Warning | DMX | Adair, Audubon, Cass, Dallas, Guthrie, Madison | 4 hr |
| Sep 15, 10:28 PM CDT | Flash Flood Warning | DVN | Lee | 6 hr |
| Sep 19, 4:19 AM CDT | Flash Flood Warning | DVN | Dubuque, Jackson | 6 hr |
| Sep 19, 4:21 AM CDT | Flash Flood Warning | ARX | Clayton, Fayette | 4 hr |
| Sep 20, 12:16 AM CDT | Flash Flood Warning | DVN | Cedar, Iowa, Johnson, Keokuk, Louisa, Muscatine and 1 more | 8 hr |
| Sep 20, 1:38 AM CDT | Flash Flood Warning | DVN | Clinton, Muscatine, Scott | 6 hr |
| Sep 20, 2:02 AM CDT | Flash Flood Warning | DVN | Benton, Cedar, Iowa, Johnson, Jones, Linn | 6 hr |
| Sep 20, 5:12 AM CDT | Flash Flood Warning | DVN | Delaware, Dubuque, Jackson, Jones | 4 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Polk County9
- Dubuque County6
- Jackson County6
- Jones County6
- Lee County6
- Cedar County6
- Muscatine County6
- Scott County6
- Story County6
- Linn County5
- Mills County5
- Adair County5
- Johnson County5
- Des Moines County5
- Jasper County5
- Dallas County5
- Delaware County4
- Montgomery County4
- Pottawattamie County4
- Fremont County4
- Cass County4
- Madison County4
- Iowa County4
- Louisa County4
- Woodbury County4
- Marshall County4
- Benton County3
- Plymouth County3
- Page County3
- Marion County3
- Lucas County3
- Clinton County3
- Keokuk County3
- Washington County3
- Henry County3
- Shelby County3
- Audubon County3
- Guthrie County3
- Buchanan County2
- Decatur County2
41 more counties
- Taylor County2
- Warren County2
- Adams County2
- Clarke County2
- Union County2
- Appanoose County2
- Wayne County2
- Jefferson County2
- Boone County2
- Webster County2
- Mitchell County2
- Harrison County2
- Allamakee County1
- Winneshiek County1
- Sioux County1
- Ringgold County1
- Monroe County1
- Davis County1
- Black Hawk County1
- Grundy County1
- Tama County1
- Hamilton County1
- Calhoun County1
- Carroll County1
- Greene County1
- Sac County1
- Howard County1
- Floyd County1
- Cerro Gordo County1
- Worth County1
- Hardin County1
- Monona County1
- Van Buren County1
- Lyon County1
- Osceola County1
- Emmet County1
- Palo Alto County1
- Cherokee County1
- Crawford County1
- Clayton County1
- Fayette 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.