South Dakota Severe Flash Flood Warning | Effective 09/05/2026 04:24

Headline: 
Flash Flood Warning issued September 5 at 6:24AM CDT until September 5 at 8:45AM CDT by NWS Sioux Falls SD
Event: 
Flash Flood Warning
Urgency: 
Immediate
Effective: 
September 5, 2026 - 4:24am
Expires: 
September 5, 2026 - 6:45am
Description: 
At 624 AM CDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 2 and 4 inches of rain have fallen. The expected rainfall rate is 0.5 to 1 inch in 1 hour. Additional rainfall amounts of 0.5 to 1.5 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar indicated. 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... Ethan, Dimock and Milltown.
Instruction: 
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. Please report observed flooding to local emergency services or law enforcement and request they pass this information to the National Weather Service when you can do so safely.
Area Description: 
Davison, SD; Hanson, SD; Hutchinson, SD
Forcast Office: 
NWS Sioux Falls SD
Sender: 
w-nws.webmaster@noaa.gov