406 WGUS53 KFSD 292115 FFWFSD IAC193-300015- /O.NEW.KFSD.FF.W.0034.240829T2115Z-240830T0015Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Sioux Falls SD 415 PM CDT Thu Aug 29 2024 The National Weather Service in Sioux Falls has issued a * Flash Flood Warning for... Northwestern Woodbury County in west central Iowa... * Until 715 PM CDT. * At 415 PM CDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Up to 2 inches of rain have fallen. The expected rainfall rate is 2 to 4 inches in 1 hour. Additional rainfall amounts of 1 to 3 inches 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... Sioux City, South Sioux City and Sergeant Bluff. Heavy rainfall rates will cause flooding of low lying and poor drainage areas. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be aware of your surroundings and do not drive on flooded roads. In hilly terrain there are hundreds of low water crossings which are potentially dangerous in heavy rain. Do not attempt to cross flooded roads. Find an alternate route. 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 4253 9633 4239 9634 4239 9638 4245 9638 4246 9638 4247 9638 4248 9640 4249 9642 4249 9645 4249 9646 4250 9646 4251 9646 4255 9641 4255 9637 FLASH FLOOD...RADAR INDICATED EXPECTED RAINFALL RATE...2-4 INCHES IN 1 HOUR $$ JH