Heavy Snow in Upper Slopes of the Est Washington Cascade Crest, Washington

A member of the public 7 miles north northwest of Easton reported 12 inches of new snow at 1220 PDT on March 11th. A Co-Op Observer 17 miles northwest of Roslyn reported 16.2 inches of storm total snowfall at 1653 PDT on March 11th. A trained spotter 30 miles west of Tieton reported 14 inches of new snow in a 24 hour period ending at 1343 PDT on March 11th. The Washington Department of Transportation closed Interstate 90 the night of March 13th through the morning of the 14th due numerous vehicle spinouts in heavy snow accumulations.

A series of frontal passages coupled with a long duration atmospheric river brought heavy snow accumulations across portions of the mountainous terrain in southeastern Washington.