Illinois Severe Flood Warning | Effective 07/04/2026 20:44

Headline: 
Flood Warning issued July 4 at 10:44PM CDT until July 7 at 1:00PM CDT by NWS St Louis MO
Event: 
Flood Warning
Urgency: 
Immediate
Effective: 
July 4, 2026 - 8:44pm
Expires: 
July 6, 2026 - 8:45am
Description: 
...The Flood Warning continues for the following rivers in Illinois... Illinois River at La Grange LD. Illinois River at Valley City. Illinois River at Meredosia. 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...Illinois River at La Grange LD. * WHEN...Until Tuesday afternoon. * IMPACTS...At 24.0 feet, Extensive wetland acreage south of La Grange begins flooding. * ADDITIONAL DETAILS... - At 10:00 PM CDT Saturday the stage was 23.6 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 10:00 PM CDT Saturday was 24.0 feet. - Forecast...The river is expected to fall below flood stage Monday morning and continue falling to 21.5 feet Saturday, July 11. - Flood stage is 23.0 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: 
Brown, IL
Forcast Office: 
NWS St Louis MO