595 WGUS73 KFSD 090737 FFSFSD Flash Flood Statement National Weather Service Sioux Falls SD 237 AM CDT Fri Oct 9 2026 IAC167-SDC127-090915- /O.CON.KFSD.FF.W.0017.000000T0000Z-261009T0915Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Sioux IA-Union SD- 237 AM CDT Fri Oct 9 2026 ...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 415 AM CDT EARLY THIS MORNING FOR SOUTHWESTERN SIOUX AND NORTHEASTERN UNION COUNTIES... At 237 AM CDT, Doppler radar and automated rain gauges indicated thunderstorms producing heavy rain across the warned area. Between 2 and 3.5 inches of rain have fallen. Flooding impacts will continue, but no additional rainfall is expected. 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... Hawarden and Alcester. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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. Be aware of your surroundings and do not drive on flooded roads. 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. && LAT...LON 4296 9650 4297 9660 4301 9665 4304 9666 4305 9666 4304 9633 4299 9632 4296 9648 FLASH FLOOD...RADAR AND GAUGE INDICATED $$ JH