National Weather Service United States Department of Commerce

The Work Week will Begin with Unsettled Weather from the Southern Plains to the Great Lakes

Unsettled weather is forecast to continue through the first half of the work week from the Southern Plains to the Great Lakes as a frontal system moves through. Isolated to scattered severe thunderstorms and flash flooding will be possible each day. Meanwhile, scattered showers and thunderstorms are expected across the Southwest and California, with isolated flash flooding possible. Read More >

Overview

During the evening of June 21, 2015 a supercell traveled across Harding, Perkins, and Ziebach Counties in northwestern South Dakota, bringing large hail, strong winds, and six tornadoes. Hail to the size of baseballs was reported 7 miles southeast of Meadow with numerous reports of golfball size hail near Bison and Meadow. Eyewitness spotter and chaser reports confirmed six distinct touchdowns with this supercell. The tornadoes remained in mainly rural areas of Perkins and Ziebach Counties with little to no damage being reported.

All six tornado tracks

Tracks for all six reported tornadoes.

 

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