Missouri Flood Warning | Effective 05/02/2026 17:44

Headline: 
Flood Warning issued May 2 at 7:44PM CDT until May 4 at 11:48PM CDT by NWS St Louis MO
Event: 
Flood Warning
Urgency: 
Immediate
Effective: 
May 2, 2026 - 5:44pm
Expires: 
May 4, 2026 - 5:45am
Description: 
...The Flood Warning continues for the following rivers in Missouri... Meramec River near Arnold. 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...Meramec River near Arnold. * WHEN...Until Monday evening. * IMPACTS...At 26.0 feet, Athletic fields east of I-55 begin flooding near this height. * ADDITIONAL DETAILS... - At 7:00 PM CDT Saturday the stage was 25.8 feet and falling. - Recent Activity...The river rose above flood stage on April 29, cresting near 27.3 feet on May 1. - Forecast...The river is expected to fall below flood stage tomorrow afternoon and continue falling in the following days. - Flood stage is 24.0 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: 
Jefferson, MO; St. Louis, MO
Forcast Office: 
NWS St Louis MO
Sender: 
w-nws.webmaster@noaa.gov