Illinois, Missouri Flood Warning | Effective 04/28/2026 20:02

Headline: 
Flood Warning issued April 28 at 10:02PM CDT until May 5 at 7:00AM CDT by NWS St Louis MO
Event: 
Flood Warning
Urgency: 
Immediate
Effective: 
April 28, 2026 - 8:02pm
Expires: 
April 30, 2026 - 8:15am
Description: 
...The Flood Warning is extended for the following rivers in Illinois...Missouri... Mississippi River at Mel Price LD. Mississippi River at Grafton. Mississippi River at Canton. Mississippi River at Winfield. ...The Flood Warning continues for the following rivers in Illinois...Missouri... Mississippi River at Chester. Mississippi River at Hannibal. Mississippi River at Clarksville. Mississippi River at Louisiana. Mississippi River near Herculaneum. Mississippi River at St. Louis. Mississippi River at Alton. Mississippi River at Saverton. ...The Flood Warning is cancelled for the following rivers in Illinois...Missouri... Mississippi River at Quincy. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Mississippi River at Grafton. * WHEN...Until Tuesday morning. * IMPACTS...At 22.5 feet, East end of Main Street in Portage des Sioux begins flooding near this height. * ADDITIONAL DETAILS... - At 9:30 PM CDT Tuesday the stage was 21.9 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 9:30 PM CDT Tuesday was 21.9 feet. - Forecast...The river is expected to rise to a crest of 22.8 feet early Thursday morning. It will then fall below flood stage early Monday morning. - Flood stage is 20.0 feet.
Instruction: 
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding. This product, along with additional weather and stream information, is available at https://water.noaa.gov/wfo/lsx
Area Description: 
Jersey, IL; St. Charles, MO
Forcast Office: 
NWS St Louis MO