Flood Warning Missouri | Effective 03/09/2026 08:05

Headline: 
Flood Warning issued March 9 at 10:05AM CDT until March 12 at 4:41AM CDT by NWS St Louis MO
Event: 
Flood Warning
Urgency: 
Immediate
Effective: 
March 9, 2026 - 8:05am
Expires: 
March 10, 2026 - 8:15pm
Description: 
...The Flood Warning is extended for the following rivers in Illinois...Missouri... Kaskaskia River at Carlyle. Meramec River at Valley Park. Meramec River near Eureka. Meramec River near Sullivan. River forecasts are based on observed precipitation and forecast precipitation for the next 48 hours. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Meramec River near Eureka. * WHEN...Until late Wednesday night. * IMPACTS...At 22.0 feet, Willman Road near the Highway 109 bridge becomes inundated and impassable. * ADDITIONAL DETAILS... - At 9:30 AM CDT Monday the stage was 21.3 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 9:30 AM CDT Monday was 23.2 feet. - Forecast...The river will fall to 21.2 feet this afternoon. It will then rise to 21.7 feet tomorrow morning. It will fall below flood stage late tomorrow evening to 8.3 feet early Saturday afternoon then rise again. - Flood stage is 19.0 feet.
Instruction: 
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Motorists should not attempt to drive around barricades or drive cars through flooded areas. Be especially cautious at night when it is harder to recognize the dangers of flooding. Rainfall heavier than forecast could cause river levels to rise even higher than predicted. The National Weather Service will monitor this developing situation and issue follow up statements as conditions change. 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