Flood Warning Missouri | Effective 03/09/2026 17:55

Headline: 
Flood Warning issued March 9 at 7:55PM CDT until March 11 at 2:23AM CDT by NWS St Louis MO
Event: 
Flood Warning
Urgency: 
Immediate
Effective: 
March 9, 2026 - 5:55pm
Expires: 
March 11, 2026 - 12:30am
Description: 
...The Flood Warning continues for the following rivers in Illinois...Missouri... Kaskaskia River at Carlyle. Big River at Byrnesville. ...The Flood Warning is extended for the following rivers in Missouri... Meramec River at Valley Park. Meramec River near Eureka. ...The Flood Warning is cancelled for the following rivers in Missouri... 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...Big River at Byrnesville. * WHEN...Until late Tuesday night. * IMPACTS...At 19.0 feet, Dutch Creek Road south of Byrnesville and Byrnesville Road near John McKeever Road north of Byrnesville begin to flood. * ADDITIONAL DETAILS... - At 6:45 PM CDT Monday the stage was 18.8 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 6:45 PM CDT Monday was 20.2 feet. - Forecast...The river is expected to fall below flood stage just after midnight tonight and continue falling to 5.6 feet Monday, March 16. - Flood stage is 16.0 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
Forcast Office: 
NWS St Louis MO
Sender: 
w-nws.webmaster@noaa.gov