Alert archive / Iowa / River Flood Warnings in 2025
River Flood Warning 20, NWS Des Moines, IA
NWS Des Moines, IA issued this river flood warning at Aug 19, 2025, 9:50 AM CDT for Black Hawk County, Iowa. It took effect at Aug 20, 2025, 8:42 AM CDT. It was in force for 70 hr.
The area
The counties it named.
The facts
- Issued
- Aug 19, 2025, 9:50 AM CDT (14:50 UTC)
- In effect from
- Aug 20, 2025, 8:42 AM CDT
- Expired
- Aug 23, 2025, 6:51 AM CDT
- In force
- 70 hr
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
- Flood severity
- Minor
County Black Hawk County, IA
The radar
The Des Moines radar (KDMX), 143 km from the middle of the area, began a volume at 14:52 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 Cedar River at Cedar Falls (CEDI4). The gauge peaked at 90.38 ft at Aug 22, 2025, 12:00 AM CDT.
- Action stage
- 85 ft
- Minor stage
- 89 ft
- Moderate stage
- 92 ft
- Major stage
- 94 ft
This gauge today: stage, forecast and historic crests
Stage from the USGS instantaneous record for site 05463050, 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 |
|---|---|---|---|---|
| Aug 19, 1:32 AM CDT | Dense Fog Advisory | DMX | Audubon, Black Hawk, Boone, Bremer, Butler, Calhoun and 23 more | 7 hr |
| Aug 19, 9:50 AM CDT | River Flood Warning | DMX | Black Hawk, Bremer, Butler | 3 days |
Nearby
River Flood Warnings in Iowa, 2025Every river flood warning in 2025
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.