Severe · Flash Flood WarningActive alert
Flash Flood Warning issued September 8 at 9:19PM CDT until September 9
Affecting Dallas, IA; Polk, IA
In effect until: Sep 9, 2026, 5:30 AM
Dallas, IA; Polk, IA
Likely impact across 2 counties in IA; effects through 5:30 AM.
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding. For the latest stream observations and forecasts refer to weather.gov/desmoines/water.
Affected areas
Des Moines
Read the original bulletin (official text)
At 919 PM CDT, Doppler radar and automated rain gauges indicated thunderstorms, which had produced heavy rainfall between 1 and 3 inches across much of the warned area. Polk County public safety agencies report that any poor drainage and low lying flooding has ended. However, with additional storms likely moving over the area through the rest of this evening, additional rainfall up to 1.5 inches is possible and may renew flooding in these poor drainage and low lying areas. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar and automated gauges. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. Some locations that will experience flash flooding include... Des Moines, West Des Moines, Ankeny, Urbandale, Johnston, Clive, Altoona, Pleasant Hill, Grimes, Windsor Heights, Carlisle, Bondurant, Polk City, Saylorville, Mitchellville, Adventureland Amusement Park, Iowa State Fairgrounds and Prairie Meadows.
Free. In your language.
Get the next alert for your area before it matters.
Alert data: U.S. National Weather Service / NOAA · Translation: WeatherTranslate™