Illinois, Missouri Severe Flood Warning | Effective 06/23/2026 08:19

Headline: 
Flood Warning issued June 23 at 10:19AM CDT until June 25 at 1:00PM CDT by NWS St Louis MO
Event: 
Flood Warning
Urgency: 
Immediate
Effective: 
June 23, 2026 - 8:19am
Expires: 
June 24, 2026 - 8:30pm
Description: 
...The Flood Warning continues for the following rivers in Missouri...Illinois... 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 Thursday afternoon. * 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 AM CDT Tuesday the stage was 25.2 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 10:00 AM CDT Tuesday was 25.2 feet. - Forecast...The river is expected to rise to a crest of 25.2 feet this afternoon. It will then fall below flood stage tomorrow morning. - 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