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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 northern Gulf Coast from the western Florida Panhandle to southeastern Louisiana through tonight. Read More >

Overview

Thunderstorms originating in Montana moved into the western Dakotas while organizing into a squall line and producing winds up to 70 mph.  Over time, this squall line began to bow out and generated a concentrated corridor of 80 to 100+ mph straight-line wind gusts over portions of west central to central South Dakota.

Credit: KCCR Pierre

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