Alert archive / Iowa / Flash Flood Warnings in 2026
Flash Flood Warning 33, NWS Des Moines, IA
NWS Des Moines, IA issued this flash flood warning at Oct 1, 2026, 4:38 AM CDT for 4 counties in Iowa. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Oct 1, 2026, 4:38 AM CDT (09:38 UTC)
- Expired
- Oct 1, 2026, 10:45 AM CDT
- In force
- 6 hr
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Black Hawk County, IA, Butler County, IA, Grundy County, IA, Tama County, IA
The radar
The Des Moines radar (KDMX), 120 km from the middle of the area, began a volume at 09:39 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 30, 8:36 PM CDT | River Flood Warning | DMX | Cass | 30 hr |
| Sep 30, 8:36 PM CDT | River Flood Warning | DMX | Decatur | 54 hr |
| Sep 30, 8:52 PM CDT | River Flood Warning | DMX | Black Hawk | 67 hr |
| Sep 30, 10:22 PM CDT | River Flood Warning | DMX | Jasper, Marion, Polk | 3 days |
| Sep 30, 10:22 PM CDT | River Flood Warning | DMX | Warren | 21 hr |
| Sep 30, 10:22 PM CDT | River Flood Warning | DMX | Polk, Warren | 64 hr |
| Sep 30, 10:22 PM CDT | River Flood Warning | DMX | Marion, Polk, Warren | 4 days |
| Sep 30, 10:22 PM CDT | River Flood Warning | DMX | Dallas | 65 hr |
| Oct 1, 1:19 AM CDT | Flash Flood Warning | DMX | Audubon, Calhoun, Carroll, Crawford, Greene, Guthrie | 6 hr |
Nearby
Flash Flood Warnings in Iowa, 2026Every flash flood warning in 2026
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.