Flash Flood Warning

Locations Affected

Madison, IL ∙ Summerfield, IL ∙ Washington Park, IL ∙ Swansea, IL ∙ O'Fallon, IL ∙ Centreville, IL ∙ Signal Hill, IL ∙ Cahokia St Louis Downtown Airport, IL ∙ Maryville, IL ∙ Saint Jacob, IL

Full Alert Message

BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service St Louis MO 417 PM CDT Sun Jul 6 2025 The National Weather Service in St Louis has issued a * Flash Flood Warning for... Southern Madison County in southwestern Illinois... Northern Saint Clair County in southwestern Illinois... Northeastern Saint Louis City in east central Missouri... * Until 700 PM CDT. * At 417 PM CDT, Doppler radar indicated thunderstorms producing heavy rain across 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... St. Louis, Belleville, Granite City, O'Fallon, East St. Louis, Collinsville, Fairview Heights, Cahokia, Swansea, Glen Carbon, Shiloh, Troy, Maryville, Mascoutah, Pontoon Beach, Centreville, Lebanon, Caseyville, Washington Park and Madison. This includes the following State Parks... Horseshoe Lake State Park. This includes Interstate 64 in Illinois between exits 9 and 27. 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. && LAT...LON 3871 9021 3873 9021 3875 9018 3874 8970 3866 8970 3866 8971 3859 8971 3849 8970 3855 9019 3860 9019 3861 9018 3864 9018 3867 9019 3869 9020 3870 9021 FLASH FLOOD...RADAR INDICATED

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