National Weather Service United States Department of Commerce

Heavy Rain Across the Southern US; Unsettled Pattern in the Pacific Northwest

A storm system will bring heavy rainfall, thunderstorms, and flooding threats to portions of the Southern Plains Friday, the Lower Mississippi Valley Saturday, and the Southeast into the Mid-Atlantic on Sunday. High elevation snow and mixed precipitation and rain in the lower elevations will impact the Pacific Northwest this weekend before a stronger system moves in early next week. 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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