Alert archive / Iowa / Flash Flood Warnings / 2024
Flash Flood Warnings in Iowa, May 2024
19 flash flood warnings in May 2024. 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 May 2024. Tap one for its archive.
- Flash Flood Warnings
- 19
- Busiest day
- May 21, 202415 flash flood 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 |
|---|---|---|---|---|
| May 2, 1:38 PM CDT | Flash Flood Warning | DMX | Appanoose, Lucas, Monroe, Wapello, Wayne | 6 hr |
| May 6, 11:27 PM CDT | Flash Flood Warning | OAX | Fremont, Page | 4 hr |
| May 15, 4:53 PM CDT | Flash Flood Warning | OAX | Mills, Pottawattamie | 2 hr |
| May 20, 9:51 PM CDT | Flash Flood Warning | OAX | Shelby | 5 hr |
| May 20, 11:12 PM CDT | Flash Flood Warning | OAX | Mills, Pottawattamie | 3 hr |
| May 20, 11:16 PM CDT | Flash Flood Warning | DMX | Hancock, Kossuth, Winnebago | 6 hr |
| May 21, 2:38 AM CDT | Flash Flood Warning | OAX | Harrison, Monona | 5 hr |
| May 21, 3:09 AM CDT | Flash Flood Warning | DMX | Butler, Franklin, Grundy, Hardin, Wright | 8 hr |
| May 21, 3:26 AM CDT | Flash Flood Warning | DMX | Adair, Audubon, Cass, Guthrie | 8 hr |
| May 21, 4:22 AM CDT | Flash Flood Warning | DMX | Boone, Dallas, Greene, Guthrie, Jasper, Marshall and 2 more | 7 hr |
| May 21, 5:21 AM CDT | Flash Flood Warning | OAX | Pottawattamie | 4 hr |
| May 21, 6:26 AM CDT | Flash Flood Warning | DMX | Jasper, Marshall, Poweshiek, Tama | 5 hr |
| May 21, 7:11 AM CDT | Flash Flood Warning | OAX | Harrison, Pottawattamie, Shelby | 4 hr |
| May 21, 8:57 AM CDT | Flash Flood Warning | DMX | Black Hawk, Bremer, Grundy, Hardin, Marshall, Tama | 2 hr |
| May 21, 12:34 PM CDT | Flash Flood Warning | DVN | Iowa | 4 hr |
| May 21, 2:57 PM CDT | Flash Flood Warning | DMX | Adair, Audubon, Carroll, Cass, Crawford, Greene and 1 more | 6 hr |
| May 21, 6:24 PM CDT | Flash Flood Warning | ARX | Fayette, Winneshiek | 3 hr |
| May 21, 6:49 PM CDT | Flash Flood Warning | ARX | Allamakee, Winneshiek | 3 hr |
| May 31, 2:32 PM CDT | Flash Flood Warning | DMX | Emmet | 6 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Pottawattamie County4
- Guthrie County3
- Marshall County3
- Mills County2
- Shelby County2
- Harrison County2
- Grundy County2
- Hardin County2
- Adair County2
- Audubon County2
- Cass County2
- Greene County2
- Jasper County2
- Tama County2
- Winneshiek County2
- Appanoose County1
- Lucas County1
- Monroe County1
- Wapello County1
- Wayne County1
- Fremont County1
- Page County1
- Hancock County1
- Kossuth County1
- Winnebago County1
- Monona County1
- Butler County1
- Franklin County1
- Wright County1
- Boone County1
- Dallas County1
- Polk County1
- Story County1
- Poweshiek County1
- Black Hawk County1
- Bremer County1
- Iowa County1
- Carroll County1
- Crawford County1
- Fayette County1
2 more counties
Nearby
Alerts in force nowTornadoes on recordThe radar archive20232025
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.