Sioux Falls, South Dakota – Widespread heavy rain is expected to drench South Dakota starting late Tuesday night, with up to 4 inches possible and flooding concerns mounting across the region through Thursday.
According to the National Weather Service in Sioux Falls, an active pattern aloft will drive repeated rounds of rain across southeast South Dakota, southwest Minnesota, northwest Iowa, and northeast Nebraska. Rainfall totals between 2 and 4 inches are likely, with isolated pockets seeing even higher amounts—particularly across northeast Nebraska and northwest Iowa.
Areas including Sioux Falls, Yankton, and Norfolk may experience urban and small stream flooding. Local emergency management officials urge residents to avoid water-covered roads, especially during overnight hours when visibility is limited. Minor hail and a few strong storms are also possible on Wednesday, with the potential for an isolated tornado.
Travelers along I-29, Highway 81, and regional farm routes should prepare for rapidly changing conditions and possible water over roadways. Residents are advised to charge electronic devices, review flood plans, and monitor local alerts closely.
Warnings remain in effect through Thursday, with additional updates likely as rain bands develop.
