1918: An estimated F2 tornado moved NNE from 5 miles NNW of Ferney, across the eastern edge of Groton. Homes were unroofed and barns were destroyed. Nine farms lost buildings. One man was injured in a barn, another in a car that was thrown from the road. Estimated damage was set at $60,000. Tornadoes were also seen in Lincoln and Sanborn Counties in South Dakota. Also, an estimated F2 tornado moved northeast through the townships of Akron and Artichoke in Big Stone County, Minnesota. About 300 farms had tornado damage. The funnel dissipated on Artichoke Lake.

1960: Pierre received 1.96 inches of rain in less than 30 minutes which caused flash flooding. About 30 basements were flooded with extensive cave in damage at one home. Flash flooding from 2 to 3 inches of rain occurred near Presho, washing out county roads, three bridges and a grain storage bin. Gettysburg also received 2.5 inches of rain.

1996: A brief F0 tornado touchdown and cut a narrow path from 2 miles east of Willow Lake with no damage reported. A 100 mph wind gust blew down 38 large

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