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Extreme Heat and Tropical Storm Bertha Impacts

Dangerous heat will expand from the Gulf Coast into the Southern Plains and Desert Southwest through week's end. Additional extreme heat impacting the Pacific Northwest will shift to the northern Plains by the weekend. Tropical Storm Bertha is expected to continue to impact portions of the northwestern Gulf Coast from south central Louisiana to the upper Texas coast today. Read More >

Overview

During the afternoon of July 29th a supercell developed north of Kadoka, moved east along Interstate 90 toward Murdo, then turned southeast into Mellette and Tripp counties. The storm moved over the town of Winner, where it did extensive damage with winds exceeding 80 mph. Shortly thereafter, the storm quickly dissipated.

Supercell coming into Winner, SD
Winner, SD
Courtesy of Alan Klein
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