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Atmospheric River in the Pacific Northwest and Northern Rockies this Weekend

A Pacific storm and atmospheric river will impact the Pacific Northwest states and northern Rockies this weekend, bringing locally heavy low elevations rain and heavy high elevation snow in the mountains. By Sunday over the Interior Northwest, rain combined with snowmelt will increase the risk of flood hazards. Flood Watches are in effect. Read More >

  Overview

February 10, 2018 - A strong cold front plunged south into northern Wyoming Thursday afternoon.  Unseasonably mild temperatures in the 40s and lower 50s ahead of the cold dropped abruptly into the teens behind the cold front by late Thursday afternoon.  Snow developed a few hours behind the cold front.  The highest amount observed was 7 inches 2 miles southwest of Lovell.  Widespread amounts of 2 to 5 inches were observed over much of central Wyoming by early Saturday morning. 

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Storm Total Snowfall Amounts for February 8-10, 2018.
T - 2 inches  3 to 5 inches  6 to 11 inches
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Temperatures plunged over 30 degrees in some locations across northern Wyoming, from unseasonably mild temperatures Thursday afternoon, into the teens behind the cold front late Thursday afternoon.
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Persistent snow bands developed over central Wyoming Friday afternoon into Friday night, producing 3 to 5 inches of snow across the Wind River Basin.
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