Saint Louis County, MO Warnings, Watches and Advisories

Do not drive vehicles through flooded areas. The water depth and road condition may be unsafe. Additional information is available at https://water.weather.gov/ahps2/ Stay tuned for further updates by listening to NOAA weather radio... or your local radio and TV stations.

Please carefully read each posted Warning and Alert as it relates to the area(s) being affected. We provide a wider range of issued warnings for surrounding cities and counties, so some alerts may not directly impact this location. This is done to help with preparing for severe weather that may overlap or be heading towards Saint Louis County.

Use the Radar Maps link provided to understand the trajectory of a storm.

Flood Warning issued July 26 at 8:30PM CDT until July 29 at 10:00AM CDT by NWS St Louis MO

...The Flood Warning continues for the following rivers in Illinois...Missouri... Mississippi River at Grafton. Mississippi River at Saverton. Mississippi River at Winfield. Mississippi River at Hannibal. ...The Flood Warning is extended for the following rivers in Illinois...Missouri... Mississippi River at Louisiana. Mississippi River at Clarksville. 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...Mississippi River at Saverton. * WHEN...Until late Monday morning. * ADDITIONAL DETAILS... - At 4:00 PM CDT Friday the stage was 17.3 feet. - Forecast...The river is expected to fall below flood stage early Sunday morning. - Flood stage is 16.0 feet.

Flood Warning issued July 26 at 8:30PM CDT until July 31 at 1:00AM CDT by NWS St Louis MO

...The Flood Warning continues for the following rivers in Illinois...Missouri... Mississippi River at Grafton. Mississippi River at Saverton. Mississippi River at Winfield. Mississippi River at Hannibal. ...The Flood Warning is extended for the following rivers in Illinois...Missouri... Mississippi River at Louisiana. Mississippi River at Clarksville. 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...Mississippi River at Hannibal. * WHEN...Until early Wednesday morning. * ADDITIONAL DETAILS... - At 7:15 PM CDT Friday the stage was 18.7 feet. - Forecast...The river is expected to fall below flood stage Monday evening. - Flood stage is 17.0 feet.

Flood Warning issued July 26 at 8:30PM CDT until July 31 at 7:00AM CDT by NWS St Louis MO

...The Flood Warning continues for the following rivers in Illinois...Missouri... Mississippi River at Grafton. Mississippi River at Saverton. Mississippi River at Winfield. Mississippi River at Hannibal. ...The Flood Warning is extended for the following rivers in Illinois...Missouri... Mississippi River at Louisiana. Mississippi River at Clarksville. 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...Mississippi River at Winfield. * WHEN...Until Wednesday morning. * ADDITIONAL DETAILS... - At 8:00 PM CDT Friday the stage was 28.4 feet. - Forecast...The river is expected to fall below flood stage early Tuesday morning. - Flood stage is 26.0 feet.

Flood Warning issued July 26 at 8:30PM CDT until July 31 at 7:00PM CDT by NWS St Louis MO

...The Flood Warning continues for the following rivers in Illinois...Missouri... Mississippi River at Grafton. Mississippi River at Saverton. Mississippi River at Winfield. Mississippi River at Hannibal. ...The Flood Warning is extended for the following rivers in Illinois...Missouri... Mississippi River at Louisiana. Mississippi River at Clarksville. 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...Mississippi River at Clarksville. * WHEN...Until Wednesday evening. * ADDITIONAL DETAILS... - At 8:00 PM CDT Friday the stage was 28.0 feet. - Forecast...The river is expected to fall below flood stage early Tuesday afternoon. - Flood stage is 25.0 feet.

Flood Warning issued July 26 at 8:30PM CDT until August 1 at 1:00AM CDT by NWS St Louis MO

...The Flood Warning continues for the following rivers in Illinois...Missouri... Mississippi River at Grafton. Mississippi River at Saverton. Mississippi River at Winfield. Mississippi River at Hannibal. ...The Flood Warning is extended for the following rivers in Illinois...Missouri... Mississippi River at Louisiana. Mississippi River at Clarksville. 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...Mississippi River at Louisiana. * WHEN...Until early Thursday morning. * ADDITIONAL DETAILS... - At 8:00 PM CDT Friday the stage was 17.6 feet. - Forecast...The river is expected to fall below flood stage Tuesday evening. - Flood stage is 15.0 feet.