Active Weather Alerts
River Flood Warning
Issued: 3:38 PM Aug. 24, 2025 – National Weather Service
...FLOOD WARNING REMAINS IN EFFECT UNTIL FURTHER NOTICE... * WHAT...Minor flooding is occurring. * WHERE...Big Sioux River near Estelline. * WHEN...Until further notice. * IMPACTS...At 1645.5 feet, widespread flooding of agricultural lands begins. * ADDITIONAL DETAILS... - At 10:00 AM CDT Sunday the stage was 1645.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 10:00 AM CDT Sunday was 1645.0 feet. - Forecast...No forecast is available for this location. - Flood stage is 1644.0 feet. - Stay up to date with the latest river observations and forecasts at: www.water.noaa.gov && Fld Observed Forecasts (unknown time) Location Stg Stg Day/Time d1 d2 d3 Big Sioux River Estelline 1644.0 1645.0 Sun 10 am MSG MSG MSG &&
River Flood Warning
Issued: 2:21 PM Aug. 24, 2025 – National Weather Service
...FLOOD WARNING NOW IN EFFECT UNTIL EARLY WEDNESDAY AFTERNOON... * WHAT...Moderate flooding is occurring and moderate flooding is forecast. * WHERE...Big Sioux River near Castlewood. * WHEN...Until early Wednesday afternoon. * IMPACTS...At 11.0 feet, Significant amounts of pasture and other agricultural lands will be flooded. * ADDITIONAL DETAILS... - At 8:45 AM CDT Sunday the stage was 11.4 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 8:45 AM CDT Sunday was 11.4 feet. - Forecast...The river is expected to fall below flood stage Wednesday morning and continue falling to 8.5 feet Friday morning. - Flood stage is 9.0 feet. - http://www.weather.gov/safety/flood &&
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