Illinois, Missouri Flood Warning | Effective 05/04/2026 02:41

Headline: 
Flood Warning issued May 4 at 4:41AM CDT until May 5 at 1:00PM CDT by NWS St Louis MO
Event: 
Flood Warning
Urgency: 
Immediate
Effective: 
May 4, 2026 - 2:41am
Expires: 
May 5, 2026 - 11:00am
Description: 
...The Flood Warning continues for the following rivers in Illinois...Missouri... Mississippi River at Grafton. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT...Minor flooding is forecast. * WHERE...Mississippi River at Grafton. * WHEN...Until Tuesday afternoon. * ADDITIONAL DETAILS... - At 4:30 AM CDT Monday the stage was 19.9 feet. - Forecast...The river is expected to rise to a crest of 20.0 feet this morning. - Flood stage is 20.0 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: 
Jersey, IL; St. Charles, MO
Forcast Office: 
NWS St Louis MO
Sender: 
w-nws.webmaster@noaa.gov