Roslyn, Washington – Mountain travel along the eastern slopes of the Washington Cascades could become nearly impossible later this week as a prolonged snowstorm threatens to bury higher elevations with up to 4 feet of snow by Friday morning.
According to the National Weather Service in Pendleton, a Winter Weather Advisory begins at 5 a.m. Monday and continues through 5 p.m. Tuesday for the upper slopes of the Eastern Washington Cascades Crest, including Roslyn and Easton. Snowfall totals of 8 to 14 inches are expected during this first round, with wind gusts reaching 40 mph across exposed ridges.
Conditions could rapidly worsen late Tuesday night when a Winter Storm Watch takes effect through Friday morning. Forecasters say an additional 2 to 4 feet of snowfall is possible during the multi-day event, while winds may gust up to 55 mph, creating blowing snow and sharply reduced visibility.
High-elevation roads near Snoqualmie Pass and surrounding Cascade routes could become extremely difficult to navigate as snowfall intensifies. Heavy snow combined with strong winds may produce near whiteout conditions at times, especially during heavier bursts.
Washington State Department of Transportation officials urge drivers to delay travel if possible and monitor road conditions at wsdot.wa.gov/travel. Anyone who must travel should carry tire chains, blankets, extra clothing, food, water, and a winter emergency kit.
Additional warnings or upgraded alerts are possible as the long-duration storm develops late Tuesday night.
