Headline:
Flash Flood Warning issued May 17 at 9:04PM CDT until May 17 at 11:15PM CDT by NWS Sioux Falls SD
Event:
Flash Flood Warning
Urgency:
Immediate
Effective:
May 17, 2026 - 7:04pm
Expires:
May 17, 2026 - 9:15pm
Description:
At 904 PM CDT, Doppler radar and automated rain gauges indicated
thunderstorms producing heavy rain across the warned area. Between 3
and 4.5 inches of rain have fallen. Minimal additional rainfall is
expected.
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...
Le Mars, Maurice, Struble and Brunsville.
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.
Area Description:
Plymouth, IA; Sioux, IA
Forcast Office:
NWS Sioux Falls SD
Sender: