から: 2026/08/06, 02:44
に: 2026/08/06, 13:00

* WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of Illinois, including the following areas, Calhoun IL, Greene IL, Jersey IL, Madison IL, Monroe IL, Pike IL and Saint Clair IL and Missouri, including the following areas, Franklin MO, Jefferson MO, Lincoln MO, Pike MO, Saint Charles MO, Saint Louis City MO, Saint Louis MO, Warren MO and Washington MO. * WHEN...Until 1 PM CDT this afternoon. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - Widespread showers and thunderstorms may yield isolated instances of flash flooding through early this afternoon.

から: 2026/08/06, 06:18
に: 2026/08/06, 08:15

At 618 AM CDT, the heaviest rain had come to an end. However, flash flooding was ongoing. Emergency management reported flash flooding causing road closures. Flash flooding will continue even as the rain has decreased in intensity. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Emergency management reported. 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... Washington, Union, Sullivan, Pacific, St. Clair, Villa Ridge, Gray Summit, Parkway, Miramiguoa Park, Lonedell, Moselle, Piney Park, Robertsville, Catawissa, Stanton and Lyon. This includes the following State Parks... Robertsville State Park and Meramec State Park. This includes Interstate 44 in Missouri between exits 225 and 257.