National Weather Service United States Department of Commerce


A powerful, early-winter storm moved through the Northern and Central Plains on December 4, 2017, producing several inches of snowfall across portions of northeastern Wyoming and western South Dakota. Upslope winds across the northern Black Hills led to localized enhanced snowfall rates, leading to accumulations of 8-12 inches. High winds were also observed during and following the snowfall, with gusts of 60-65 mph common across the Foothills and Plains of South Dakota.


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