Illinois, Missouri Flood Warning | Effective 04/22/2026 19:06

Headline: 
Flood Warning issued April 22 at 9:06PM CDT until April 30 at 7:00AM CDT by NWS St Louis MO
Event: 
Flood Warning
Urgency: 
Immediate
Effective: 
April 22, 2026 - 7:06pm
Expires: 
April 24, 2026 - 7:15am
Description: 
...The Flood Warning is extended for the following rivers in Illinois...Missouri... Mississippi River at Chester. ...The Flood Warning continues for the following rivers in Illinois...Missouri... Mississippi River at Saverton. Mississippi River at Grafton. Mississippi River at Canton. Illinois River at Hardin. 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 Grafton. * WHEN...Until Thursday, April 30. * IMPACTS...At 21.0 feet, Water begins flooding the floor at the Palisades Marina in Portage Des Sioux. Access to homes along North Shore Drive in eastern St. Charles County becomes cut off near this height. * ADDITIONAL DETAILS... - At 8:30 PM CDT Wednesday the stage was 20.8 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 8:30 PM CDT Wednesday was 20.8 feet. - Forecast...The river is expected to fall below flood stage Wednesday, April 29 and continue falling to 19.8 feet Wednesday, April 29. - Flood stage is 20.0 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: 
Jersey, IL; St. Charles, MO
Forcast Office: 
NWS St Louis MO
Sender: 
w-nws.webmaster@noaa.gov