Flood Warning

Locations Affected

Saint Louis, MO ∙ Fairmont City, IL ∙ Bella Villa, MO ∙ Cahokia, IL ∙ Granite City, IL ∙ Pontoon Beach, IL ∙ Sauget, IL ∙ Frank Holten State Recreation Area, IL ∙ Oakville, MO ∙ North Dupo, IL

Headline

...The Flood Warning continues for the following rivers in Missouri...Illinois...
Mississippi River at St. Louis.
Mississippi River near Herculaneum.
Mississippi River at Chester.
...The Flood Warning is extended for the following rivers in Missouri...Illinois...
Mississippi River at Alton.
Mississippi River at Mel Price LD.
Mississippi River at Grafton.
River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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
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Full Alert Message

Flood Statement National Weather Service St Louis MO 103 PM CDT Thu Apr 30 2026 ...The Flood Warning continues for the following rivers in Missouri...Illinois... Mississippi River at St. Louis. Mississippi River near Herculaneum. Mississippi River at Chester. ...The Flood Warning is extended for the following rivers in Missouri...Illinois... Mississippi River at Alton. Mississippi River at Mel Price LD. Mississippi River at Grafton. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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 && ...FLOOD WARNING NOW IN EFFECT UNTIL SATURDAY EVENING... * WHAT...Minor flooding is forecast. * WHERE...Mississippi River at St. Louis. * WHEN...Until Saturday evening. * IMPACTS...At 30.0 feet, Floodwall at Lacledes Landing is closed. Also at this level, the U.S. Coast Guard may prohibit all recreational vessel traffic from just above the Chain of Rocks Canal south entry to just below the mouth of the Meramec River. * ADDITIONAL DETAILS... - At 12:00 PM CDT Thursday the stage was 29.3 feet. - Forecast...The river is expected to rise to a crest of 30.0 feet early tomorrow afternoon. - Flood stage is 30.0 feet. && All Times CDT Fld Observed Forecasts (7:00 am) Location Stg Stage Fri Sat Sun Mon Tue Mississippi River St. Louis 30.0 29.3 29.9 29.1 26.8 24.2 21.2 && LAT...LON 3881 9017 3881 9001 3866 9002 3853 9016 3843 9022 3843 9032 3856 9029 3863 9020 3872 9023

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