Immediate

Responsive action SHOULD be taken immediately

Illinois, Missouri Flood Warning | Effective 05/01/2026 19:40

...The Flood Warning continues for the following rivers in Missouri...Illinois... Mississippi River at Alton. Mississippi River near Herculaneum. Mississippi River at Chester. ...The Flood Warning is extended for the following rivers in Missouri...Illinois... 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. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Mississippi River near Herculaneum.

Illinois, Missouri Flood Warning | Effective 05/01/2026 19:40

...The Flood Warning continues for the following rivers in Missouri...Illinois... Mississippi River at Alton. Mississippi River near Herculaneum. Mississippi River at Chester. ...The Flood Warning is extended for the following rivers in Missouri...Illinois... 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. * WHAT...Minor flooding is occurring. * WHERE...Mississippi River at Alton. * WHEN...Until late Saturday night.

Illinois, Missouri Flood Warning | Effective 05/01/2026 19:40

...The Flood Warning continues for the following rivers in Missouri...Illinois... Mississippi River at Alton. Mississippi River near Herculaneum. Mississippi River at Chester. ...The Flood Warning is extended for the following rivers in Missouri...Illinois... 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. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Mississippi River at Chester.

Illinois, Missouri Flood Warning | Effective 05/01/2026 19:40

...The Flood Warning continues for the following rivers in Missouri...Illinois... Mississippi River at Alton. Mississippi River near Herculaneum. Mississippi River at Chester. ...The Flood Warning is extended for the following rivers in Missouri...Illinois... 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. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Mississippi River at Grafton.

Illinois Flood Warning | Effective 05/01/2026 19:01

...The Flood Warning continues for the following rivers in Illinois... Fox River at Algonquin Lock & Dam tailwater affecting McHenry, Kane and Lake IL Counties. * WHAT...Moderate flooding is occurring and moderate flooding is forecast. * WHERE...Fox River from Johnsburg downstream to Red Gate Road in St. Charles, including the Algonquin Lock & Dam tailwater gauge. * WHEN...Until early Tuesday morning. * IMPACTS...At 11.0 feet, Structures threatened near Elgin Avenue

Missouri Flood Warning | Effective 05/01/2026 19:11

...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...

Mississippi Flood Warning | Effective 05/01/2026 19:14

...The Flood Warning continues for the following rivers in Mississippi... Buttahatchie River near Aberdeen For the Buttahatchie River...including Aberdeen...Minor flooding is forecast. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Buttahatchie River near Aberdeen. * WHEN...Until Sunday afternoon. * IMPACTS...At 15.0 feet, Water is covering a portion of Air Base Road located on the west bank of the river. Low-lying farmland is flooded. * ADDITIONAL DETAILS...

Illinois Flood Warning | Effective 05/01/2026 19:18

...The Flood Warning is extended for the following rivers in Illinois... Illinois River at Meredosia. ...The Flood Warning continues for the following rivers in Illinois... Illinois River at Valley City. Illinois River at Hardin. 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...Illinois River at Hardin. * WHEN...Until further notice. * ADDITIONAL DETAILS...

Illinois Flood Warning | Effective 05/01/2026 19:18

...The Flood Warning is extended for the following rivers in Illinois... Illinois River at Meredosia. ...The Flood Warning continues for the following rivers in Illinois... Illinois River at Valley City. Illinois River at Hardin. 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...Illinois River at Valley City. * WHEN...Until further notice. * IMPACTS...At 14.0 feet, The road to Norbut Fish and Wildlife area

Illinois Flood Warning | Effective 05/01/2026 19:18

...The Flood Warning is extended for the following rivers in Illinois... Illinois River at Meredosia. ...The Flood Warning continues for the following rivers in Illinois... Illinois River at Valley City. Illinois River at Hardin. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT...Minor flooding is forecast. * WHERE...Illinois River at Meredosia. * WHEN...From late tonight to Monday evening. * IMPACTS...At 17.4 feet, Meredosia boat dock floods. * ADDITIONAL DETAILS...
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