Illinois Minor Flood Advisory | Effective 09/16/2026 16:18

Headline: 
Flood Advisory issued September 16 at 6:18PM CDT until September 16 at 7:45PM CDT by NWS St Louis MO
Event: 
Flood Advisory
Urgency: 
Expected
Effective: 
September 16, 2026 - 4:18pm
Expires: 
September 16, 2026 - 5:45pm
Description: 
* WHAT...Urban area and small stream flooding caused by excessive rainfall continues. * WHERE...Central Saint Clair County in southwestern Illinois... * WHEN...Until 745 PM CDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. * ADDITIONAL DETAILS... - At 614 PM CDT, Doppler radar indicated between 1 and 3 inches of rain have fallen from thunderstorms that were over the area late this afternoon. This will cause urban and small stream flooding. - Flooding impacts will continue, but no additional rainfall is expected. - Some locations that will experience flooding include... Belleville, O'Fallon, Fairview Heights, Cahokia, Swansea, Shiloh, Centreville, Freeburg, Dupo, Millstadt, Cahokia Parks Airport, Smithton, Alorton, East Carondelet, Barr and Sauget.
Instruction: 
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.
Area Description: 
St. Clair, IL
Forcast Office: 
NWS St Louis MO
Sender: 
w-nws.webmaster@noaa.gov