Active Weather Alerts
River Flood Warning
Issued: 4:16 PM Apr. 21, 2026 – National Weather Service
...FLOOD WARNING REMAINS IN EFFECT UNTIL FURTHER NOTICE... * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Mississippi River at Grafton. * WHEN...Until further notice. * IMPACTS...At 21.0 feet, Water begins flooding the floor at the Palisades Marina in Portage Des Sioux. Access to homes along North Shore Drive in eastern St. Charles County becomes cut off near this height. * ADDITIONAL DETAILS... - At 10:30 AM CDT Tuesday the stage was 20.7 feet. - Forecast...The river is expected to rise to a crest of 20.7 feet this afternoon. - Flood stage is 20.0 feet. && All Times CDT Fld Observed Forecasts (7:00 am) Location Stg Stage Wed Thu Fri Sat Sun Mississippi River Grafton 20.0 20.7 20.7 20.7 20.6 20.5 20.4 &&
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