Iowa Severe Flood Watch | Effective 09/17/2026 02:51

Headline: 
Flood Watch issued September 17 at 4:51AM CDT until September 17 at 10:00AM CDT by NWS Des Moines IA
Event: 
Flood Watch
Urgency: 
Future
Effective: 
September 17, 2026 - 2:51am
Expires: 
September 17, 2026 - 8:00am
Description: 
* WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of central and west central Iowa, including the following counties, in central Iowa, Boone, Dallas, Jasper, Marshall, Polk, Poweshiek, Story and Tama. In west central Iowa, Greene and Guthrie. * WHEN...Until 10 AM CDT this morning. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS... - Moderate to heavy rain was falling across parts of the watch area early this morning. Already saturated conditions have lowered the rainfall needed for flash flooding impacts.
Instruction: 
For the latest stream observations and forecasts refer to weather.gov/desmoines/water.
Area Description: 
Greene; Boone; Story; Marshall; Tama; Guthrie; Dallas; Polk; Jasper; Poweshiek
Forcast Office: 
NWS Des Moines IA
Sender: 
w-nws.webmaster@noaa.gov