Illinois Severe Flood Warning | Effective 06/20/2026 08:53

Headline: 
Flood Warning issued June 20 at 10:53AM CDT by NWS St Louis MO
Event: 
Flood Warning
Urgency: 
Immediate
Effective: 
June 20, 2026 - 8:53am
Expires: 
June 21, 2026 - 9:00pm
Description: 
...The Flood Warning continues for the following locations on the Illinois river... Illinois River at La Grange LD. Illinois River at Valley City. Illinois River at Hardin. Illinois River at Meredosia. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT...Minor flooding is forecast. * WHERE...Illinois River at Meredosia. * WHEN...From this afternoon until further notice. * IMPACTS...At 18.0 feet, City of Meredosia plugs storm sewer outlets. * ADDITIONAL DETAILS... - At 10:30 AM CDT Saturday the stage was 16.9 feet. - Forecast...The river is expected to rise above flood stage this afternoon and continue rising to a crest of 18.3 feet Wednesday morning. - Flood stage is 17.0 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: 
Morgan, IL; Pike, IL
Forcast Office: 
NWS St Louis MO