Missouri Flood Warning | Effective 05/01/2026 11:21

Headline: 
Flood Warning issued May 1 at 1:21PM CDT until May 5 at 12:00AM CDT by NWS St Louis MO
Event: 
Flood Warning
Urgency: 
Immediate
Effective: 
May 1, 2026 - 11:21am
Expires: 
May 2, 2026 - 11:30pm
Description: 
...The Flood Warning is extended 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 late Monday night. * IMPACTS...At 27.0 feet, Meramec Bottom Road between Wells Road and Kerth Road begins flooding near this height. * ADDITIONAL DETAILS... - At 1:00 PM CDT Friday the stage was 27.2 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 1:00 PM CDT Friday was 27.4 feet. - Forecast...The river is expected to crest near 27.3 feet this afternoon and slowly fall into the evening. It will then fall below flood stage Sunday evening. - Flood stage is 24.0 feet.
Instruction: 
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. 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