National Weather Service United States Department of Commerce


Thunderstorms developed over southeast Montana and northeast Wyoming in the mid-afternoon, then quickly become severe as they tracked southeast through the northern Black Hills, Rapid City, the Badlands, and areas within and east of the Pine Ridge Reservation. Very large hail bigger than baseballs and severe wind gusts in excess of 80 mph occurred, along with a couple tornadoes.

View of storm looking west from Skyline Drive in Rapid City, courtesy of David Stradling
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