Alert archive / Iowa / Flash Flood Warnings / 2025
Flash Flood Warnings in Iowa, August 2025
14 flash flood warnings in August 2025. 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 August 2025. Tap one for its archive.
- Flash Flood Warnings
- 14
- Busiest day
- August 10, 20256 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 |
|---|---|---|---|---|
| Aug 7, 6:29 AM CDT | Flash Flood Warning | DMX | Appanoose, Lucas, Wayne | 6 hr |
| Aug 7, 8:44 AM CDT | Flash Flood Warning | DMX | Clarke, Decatur, Lucas, Wayne | 4 hr |
| Aug 9, 3:41 AM CDT | Flash Flood Warning | FSD | Cherokee | 3 hr |
| Aug 9, 6:27 AM CDT | Flash Flood Warning | OAX | Harrison | 4 hr |
| Aug 10, 3:58 AM CDT | Flash Flood Warning | OAX | Fremont, Mills, Pottawattamie | 106 min |
| Aug 10, 4:18 AM CDT | Flash Flood Warning | DVN | Louisa, Muscatine, Scott | 5 hr |
| Aug 10, 5:13 AM CDT | Flash Flood Warning | DVN | Cedar, Muscatine, Scott | 5 hr |
| Aug 10, 7:01 AM CDT | Flash Flood Warning | DVN | Delaware, Dubuque, Jackson, Jones | 5 hr |
| Aug 10, 7:16 AM CDT | Flash Flood Warning | DVN | Johnson, Jones, Linn | 3 hr |
| Aug 10, 5:10 PM CDT | Flash Flood Warning | ARX | Clayton | 3 hr |
| Aug 15, 5:39 PM CDT | Flash Flood Warning | DVN | Benton, Buchanan | 4 hr |
| Aug 18, 3:36 AM CDT | Flash Flood Warning | FSD | Lyon, Osceola, Sioux | 2 hr |
| Aug 18, 7:20 AM CDT | Flash Flood Warning | ARX | Allamakee, Chickasaw, Floyd, Howard, Mitchell, Winneshiek | 4 hr |
| Aug 30, 4:01 PM CDT | Flash Flood Warning | FSD | Lyon, O'Brien, Sioux | 119 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Lucas County2
- Wayne County2
- Muscatine County2
- Scott County2
- Jones County2
- Lyon County2
- Sioux County2
- Appanoose County1
- Clarke County1
- Decatur County1
- Cherokee County1
- Harrison County1
- Fremont County1
- Mills County1
- Pottawattamie County1
- Louisa County1
- Cedar County1
- Delaware County1
- Dubuque County1
- Jackson County1
- Johnson County1
- Linn County1
- Clayton County1
- Benton County1
- Buchanan County1
- Osceola County1
- Allamakee County1
- Chickasaw County1
- Floyd County1
- Howard County1
- Mitchell County1
- Winneshiek County1
- O'Brien County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20242026
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.