Illinois, Missouri Flood Warning | Effective 04/29/2026 09:54

Headline: 
Flood Warning issued April 29 at 11:54AM CDT until May 3 at 1:00AM CDT by NWS St Louis MO
Event: 
Flood Warning
Urgency: 
Immediate
Effective: 
April 29, 2026 - 9:54am
Expires: 
April 30, 2026 - 10:00pm
Description: 
...The Flood Warning is extended for the following rivers in Illinois...Missouri... Mississippi River at Mel Price LD. Mississippi River at Alton. ...The Flood Warning continues for the following rivers in Illinois...Missouri... Mississippi River at Chester. Mississippi River near Herculaneum. Mississippi River at St. Louis. Mississippi River at Grafton. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT...Minor flooding is forecast. * WHERE...Mississippi River at Alton. * WHEN...From late tonight to late Saturday night. * IMPACTS...At 21.7 feet, At this level, Highway 94 and the east end of Harbor Point Road off of Missouri Highway 94 north of West Alton begin flooding. Also, the access road the Lincoln Shields recreation area off of U.S. Highway 367 just west of the Clark bridge begins flooding. * ADDITIONAL DETAILS... - At 11:30 AM CDT Wednesday the stage was 20.3 feet. - Forecast...The river is expected to rise above flood stage just after midnight tonight to a crest of 21.5 feet tomorrow evening. It will then fall below flood stage Friday evening. - Flood stage is 21.0 feet.
Instruction: 
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. This product, along with additional weather and stream information, is available at https://water.noaa.gov/wfo/lsx
Area Description: 
Madison, IL; St. Charles, MO
Forcast Office: 
NWS St Louis MO
Sender: 
w-nws.webmaster@noaa.gov