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Powerful Winter Storm from the Upper Midwest into the Northeast; Severe Thunderstorms in the Midwest and Ohio Valley

A rapidly-intensifying storm is expected to bring heavy snow, blizzard conditions, and icing from the Upper Midwest through the Great Lakes and Northeast. Scattered severe thunderstorms may produce severe/damaging wind gusts and a couple of tornadoes across parts of the Midwest and lower Ohio Valley through the evening. Arctic air will expand across the central and southern U.S.. 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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