Illinois Flood Warning | Effective 05/20/2026 10:45

Headline: 
Flood Warning issued May 20 at 12:45PM CDT until May 22 at 8:30PM CDT by NWS St Louis MO
Event: 
Flood Warning
Urgency: 
Immediate
Effective: 
May 20, 2026 - 10:45am
Expires: 
May 21, 2026 - 10:45pm
Description: 
...The Flood Warning is extended for the following rivers in Illinois... Kaskaskia River at Carlyle. 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...Kaskaskia River at Carlyle. * WHEN...Until Friday evening. * IMPACTS...At 17.8 feet, Near this height, the left bank below the dam near the tailwater gage begins flooding. Minor flooding of park grounds begins. * ADDITIONAL DETAILS... - At 12:00 PM CDT Wednesday the stage was 17.7 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 12:00 PM CDT Wednesday was 17.9 feet. - Forecast...The river is expected to fall to 17.2 feet tonight. It will then fall below flood stage early tomorrow afternoon. - Flood stage is 16.5 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: 
Clinton, IL
Forcast Office: 
NWS St Louis MO
Sender: 
w-nws.webmaster@noaa.gov