Active Weather Alerts
River Flood Warning
Issued: 3:07 PM May. 2, 2026 – National Weather Service
...FLOOD WARNING NOW IN EFFECT UNTIL MONDAY EVENING... * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Meramec River near Arnold. * WHEN...Until Monday evening. * ADDITIONAL DETAILS... - At 9:30 AM CDT Saturday the stage was 26.4 feet. - Forecast...The river is expected to fall below flood stage Sunday afternoon. - Flood stage is 24.0 feet. && All Times CDT Fld Observed Forecasts (7:00 am) Location Stg Stage Sun Mon Tue Wed Thu Meramec River Arnold 24.0 26.4 24.9 22.8 20.4 18.4 17.1 &&
River Flood Warning
Issued: 2:45 PM May. 2, 2026 – National Weather Service
...FLOOD WARNING NOW IN EFFECT UNTIL SUNDAY EVENING... * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Mississippi River near Herculaneum. * WHEN...Until Sunday evening. * ADDITIONAL DETAILS... - At 9:00 AM CDT Saturday the stage was 26.5 feet. - Forecast...The river is expected to fall below flood stage this afternoon. - Flood stage is 26.0 feet. && All Times CDT Fld Observed Forecasts (7:00 am) Location Stg Stage Sun Mon Tue Wed Thu Mississippi River Herculaneum 26.0 26.5 24.7 22.8 20.3 18.1 16.6 &&
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