National Weather Service United States Department of Commerce


A vigorous late-season storm system raced across northeast South Dakota and west central Minnesota during the early evening on Tuesday, September 19th. Many atmospheric ingredients, including abundant moisture, instability, wind shear and forcing, came together for rapid and intense thunderstorm development. Severe weather in the form of large hail and damaging winds, as well as tornadoes resulted. Locally heavy rain also affected the area, while those west of a line generally from Faulkton to Chamberlain remained dry.

Strong to severe thunderstorms across the region, as seen from GOES-16 at 9 pm
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