Illinois, Missouri Flood Warning | Effective 04/21/2026 19:26

Headline: 
Flood Warning issued April 21 at 9:26PM CDT by NWS St Louis MO
Event: 
Flood Warning
Urgency: 
Immediate
Effective: 
April 21, 2026 - 7:26pm
Expires: 
April 23, 2026 - 7:30am
Description: 
...The Flood Warning continues for the following rivers in Illinois...Missouri... Mississippi River at Chester. Mississippi River at Canton. Mississippi River at Grafton. Mississippi River at Saverton. Mississippi River at Winfield. Mississippi River at Hannibal. Mississippi River at Clarksville. Mississippi River at Louisiana. 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 Clarksville. * WHEN...Until further notice. * ADDITIONAL DETAILS... - At 9:00 PM CDT Tuesday the stage was 28.3 feet. - Forecast...The river is expected to slowly fall to 27.4 feet by Monday. - Flood stage is 25.0 feet.
Instruction: 
Motorists should not attempt to drive around barricades or drive cars through flooded areas. This product, along with additional weather and stream information, is available at https://water.noaa.gov/wfo/lsx
Area Description: 
Calhoun, IL; Pike, MO
Forcast Office: 
NWS St Louis MO
Sender: 
w-nws.webmaster@noaa.gov