National Weather Service United States Department of Commerce

Major Winter Storm Ongoing in the Upper Midwest; Severe Weather Tonight from the Mid-South to the Ohio Valley

A major winter storm will continue to bring blizzard conditions, heavy snowfall, icing, and strong winds through Monday across the Upper Midwest and Upper Great Lakes. A line of storms will be capable of producing widespread damaging winds, tornadoes, and some large hail from the Mid-South to the Ohio Valley and the Southeast through tonight, moving into the Mid-Atlantic Monday. Read More >

  Overview

Periods of heavy snowfall occurred across Yellowstone
National Park, and the Absaroka Mountains from Thursday
night through Saturday morning. At the same time very
strong mountain top winds were observed as well as between
Rock Springs to Casper. An Arctic cold front pushed south,
east of the Divide Friday with bitter cold temperatures in
the single digits above and below zero. South of this Arctic
front unseasonably warm temperatures were observed Friday with
Rock Springs tying a record high of 47 degrees. Another surge
of Arctic air on Saturday combining with a disturbance aloft 
produced a line of moderate to heavy snow east of the Divide
with most areas seeing 1 to 3 inches of new snowfall. 

 

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Snowfall Totals for December 29th and 30th
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Cody Snow Picture (courtesy of Jeremy J.)  Heavy snow in Casper Saturday Evening Contrast of temperatures at 3 PM Friday
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