Illinois, Missouri Flash Flood Warning - Severe | Effective 06/08/2026 08:32

FFWLSX The National Weather Service in St Louis has issued a * Flash Flood Warning for... Southeastern Calhoun County in southwestern Illinois... South Central Jersey County in southwestern Illinois... Southwestern Madison County in southwestern Illinois... East Central Franklin County in east central Missouri... Northwestern Jefferson County in east central Missouri... Central Saint Charles County in east central Missouri... Saint Louis County in east central Missouri... Southeastern Warren County in east central Missouri... * Until 330 PM CDT. * At 1032 AM CDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 2 and 4 inches of rain have fallen. 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 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... O'Fallon, St. Charles, St. Peters, Florissant, Chesterfield, Wildwood, Ballwin, Kirkwood, Maryland Heights, Hazelwood, Manchester, Creve Coeur, Overland, Washington, St. Ann, Bridgeton, Dardenne Prairie and Town and Country. This includes the following State Parks... Babler Memorial State Park, Route 66 State Park, Castlewood State Park, First Missouri State Capitol Historic Site and Robertsville State Park. This includes the following highways... Interstate 70 in Missouri between exits 219 and 231. Interstate 44 in Missouri between exits 247 and 276.