Illinois, Missouri Severe Flood Warning | Effective 10/04/2026 20:30

Headline: 
Flood Warning issued October 4 at 10:30PM CDT until October 6 at 7:00PM CDT by NWS St Louis MO
Event: 
Flood Warning
Urgency: 
Immediate
Effective: 
October 4, 2026 - 8:30pm
Expires: 
October 6, 2026 - 8:30am
Description: 
...The Flood Warning continues for the following rivers in Illinois...Missouri... Mississippi River at Louisiana. Mississippi River at Clarksville. River forecasts are based on observed precipitation and forecast precipitation for the next 48 hours. * WHAT...Minor flooding is occurring and forecast. * WHERE...Mississippi River at Clarksville. * WHEN...Until Tuesday evening. * IMPACTS...At 25.3 feet, The road to Port Marmac, a riverside community of about 13 homes just south of Clarksville, begins flooding. * ADDITIONAL DETAILS... - At 10:00 PM CDT Sunday the stage was 25.2 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 10:00 PM CDT Sunday was 25.2 feet. - Forecast...The river is expected to fall below flood stage early tomorrow afternoon and continue falling to 21.3 feet Sunday, October 11. - Flood stage is 25.0 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: 
Calhoun, IL; Pike, MO
Forcast Office: 
NWS St Louis MO
Sender: 
w-nws.webmaster@noaa.gov