Snoqualmie Pass, WA – Travel across the Washington Cascades could become difficult this week as snow is expected to intensify at Snoqualmie Pass and surrounding mountain areas, according to the National Weather Service.
According to the National Weather Service office in Pendleton, a Winter Weather Advisory is in effect from Tuesday evening through Wednesday evening, with snow accumulations of up to 10 inches possible along the upper east slopes of the Washington Cascades. Locally heavier snowfall is possible near higher peaks and ridgelines.
Forecasters say snow is expected to develop Tuesday and continue through Wednesday, with the heaviest snowfall likely during the day Wednesday. Snowfall rates could become moderate to heavy at times, significantly reducing visibility and creating slick, snow-covered roadways.
The advisory includes Snoqualmie Pass, a major travel corridor connecting western and central Washington. Officials warn that driving conditions may deteriorate quickly, especially during periods of heavier snowfall.
The alert was highlighted Monday as forecasters emphasized increasing confidence in impactful snow totals across the passes. Travel disruptions are possible as crews work to keep roadways clear amid ongoing snowfall.
Drivers planning to cross the Cascades are urged to check the latest road conditions before departure and be prepared for winter driving. The Washington State Department of Transportation recommends carrying traction devices, allowing extra travel time, and monitoring pass reports through its TripCheck and travel information platforms.
The National Weather Service rates the overall weather risk as moderate, noting that conditions may still worsen if snowfall exceeds projections or temperatures remain colder than expected.
Motorists should slow down, increase following distance, and remain alert for rapidly changing conditions. Travelers are also encouraged to delay nonessential trips during the heaviest snowfall periods if possible.
