Alert archive / Iowa / River Flood Warnings in 2026
River Flood Warning 22, NWS Des Moines, IA
NWS Des Moines, IA issued this river flood warning at Sep 17, 2026, 9:35 PM CDT for Polk County, Warren County, Iowa. It took effect at Sep 18, 2026, 1:00 AM CDT. It was in force for 9 hr.
The area
The counties it named.
The facts
- Issued
- Sep 17, 2026, 9:35 PM CDT (02:35 UTC)
- In effect from
- Sep 18, 2026, 1:00 AM CDT
- Expired
- Sep 18, 2026, 10:28 AM CDT
- In force
- 9 hr
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
- Flood severity
- Minor
Counties Polk County, IA, Warren County, IA
The radar
The Des Moines radar (KDMX), 28 km from the middle of the area, began a volume at 02:38 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 river
Written for the forecast point North River near Norwalk (NRWI4). The gauge peaked at 21.91 ft at Sep 17, 2026, 10:00 PM CDT.
- Action stage
- 17 ft
- Minor stage
- 22 ft
- Moderate stage
- 25 ft
- Major stage
- 26 ft
This gauge today: stage, forecast and historic crests
Stage from the USGS instantaneous record for site 05486000, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 18, 1:22 PM CDT | Flood Watch | DMX | Black Hawk, Bremer, Butler, Cerro Gordo, Worth | 22 hr |
Nearby
River Flood Warnings in Iowa, 2026Every river 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; the gauge from the NWS water service and the USGS.