Jun 26, 2025
On June 25th, multiple thunderstorms from the morning into the early afternoon caused flooding in parts of northeast South Dakota. A CoCoRaHS observer 4 miles south-southeast of Milbank recorded 3.33 inches of rain, while the COOP observer in Milbank measured 3.25 inches. Grant County Emergency Management sent photos of washed-out roads, and a resident near Ortley documented water reaching a home's foundation.||The heavy runoff caused several area rivers to flood. Near Milbank, the North Fork Wh
Source: NOAA National Weather Service Storm Events Database (event 1277295). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Day County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.