


Flash Flood Warning
Issued by NWS Sioux Falls, SD
Issued by NWS Sioux Falls, SD
Versions:
1
082 WGUS53 KFSD 302101 FFWFSD IAC119-141-167-302300- /O.NEW.KFSD.FF.W.0023.250830T2101Z-250830T2300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Sioux Falls SD 401 PM CDT Sat Aug 30 2025 The National Weather Service in Sioux Falls has issued a * Flash Flood Warning for... Southeastern Lyon County in northwestern Iowa... Northwestern O`Brien County in northwestern Iowa... Northeastern Sioux County in northwestern Iowa... * Until 600 PM CDT. * At 401 PM 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 3 to 5 inches in 1 hour. Additional rainfall amounts of 0.5 to 1 inch are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar. 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... Sheldon, Archer and Matlock. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don`t drown when encountering flooded roads. Most flood deaths occur in vehicles. && LAT...LON 4329 9587 4329 9586 4326 9586 4326 9582 4314 9566 4310 9573 4315 9587 4327 9599 FLASH FLOOD...RADAR INDICATED EXPECTED RAINFALL RATE...3-5 INCHES IN 1 HOUR $$ JM