Severe · Flash Flood WarningActive alert
Flash Flood Warning issued September 6 at 11:58AM CDT until September 6
Affecting Lyon, IA; Osceola, IA; Nobles, MN
In effect until: Sep 6, 2026, 9:00 PM
Lyon, IA; Osceola, IA; Nobles, MN
Likely impact across 3 counties in IA and MN; effects through 9:00 PM.
Get to higher ground now. Never drive through flooded roads.
Read the original bulletin (official text)
FFWFSD The National Weather Service in Sioux Falls has issued a * Flash Flood Warning for... Northeastern Lyon County in northwestern Iowa... Northwestern Osceola County in northwestern Iowa... Southern Nobles County in southwestern Minnesota... * Until 400 PM CDT. * At 1158 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 1.5 to 3 inches in 1 hour. Additional rainfall amounts of 2 to 4 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... Worthington, Ellsworth, Little Rock, Rushmore and Bigelow. Low lying portions of Interstate 90 near and west of Worthington could see standing water.
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Alert data: U.S. National Weather Service / NOAA · Translation: WeatherTranslate™