Active Weather Alerts
Flash Flood Warning
Issued: 9:38 AM Oct. 1, 2026 – National Weather Service
The National Weather Service in Des Moines has issued a * Flash Flood Warning for... Grundy County in central Iowa... Northern Tama County in central Iowa... Southeastern Butler County in north central Iowa... Black Hawk County in northeastern Iowa... * Until 1045 AM CDT Thursday. * At 438 AM CDT, Doppler radar and automated rain gauges indicated thunderstorms producing heavy rain across the warned area. Between 1 and 3 inches of rain have fallen. The expected rainfall rate is 1 to 2 inches in 1 hour. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. 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... Waterloo, Cedar Falls, Grundy Center, Evansdale, Hudson, Reinbeck, Dike, Elk Run Heights, Uni-Dome And McLeod Center, Waterloo Municipal Airport, Crossroads Mall, Washburn, Dunkerton, Raymond, Wellsburg, New Hartford, Holland, Stout and Morrison. This includes Interstate 380 between mile markers 65 and 73. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be aware of your surroundings and do not drive on flooded roads. For the latest stream observations and forecasts refer to weather.gov/desmoines/water. && FLASH FLOOD...RADAR AND GAUGE INDICATED; EXPECTED RAINFALL RATE...1-2 INCHES IN 1 HOUR
Flood Watch
Issued: 6:24 AM Oct. 1, 2026 – National Weather Service
...FLOOD WATCH REMAINS IN EFFECT THROUGH LATE TONIGHT... * WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...Much of central Iowa. * WHEN...Through late tonight. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Area creeks and streams are running high and could flood with more heavy rain. * ADDITIONAL DETAILS... - Moderate to heavy rain is ongoing over much of Iowa and is expected to continue through the morning. Soils are already saturated, with more rainfall on the way. Rainfall totals will range from 2 to 4 inches in a southwest to northeast oriented band across central Iowa, with locally higher amounts likely. Another push of 1 to 2 inches of rainfall is expected across southern and southeastern Iowa through mid- day today. This rainfall may lead to flash flooding. Poor drainage and low lying areas may experience ponding. Significant rises are expected or ongoing on many rivers and streams, which may exceed flood stage. Some larger river basins of most concern include the South Skunk River basin from Ames downstream, the Des Moines River basin Des Moines downstream, the Raccoon River downstream of U.S. Hwy 30, as well as the North, Middle, South, Nishnabotna, Grand and Chariton River basins. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. For the latest stream observations and forecasts refer to weather.gov/desmoines/water. &&
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