Pendleton, OR – Drivers crossing Washington’s Cascade passes early this week could encounter dangerous winter conditions as moderate to heavy snowfall moves into the region Monday morning and continues through late Tuesday afternoon.
According to the National Weather Service in Pendleton, snow is expected to develop across the Washington Cascades Monday, bringing periods of heavier accumulation and reduced visibility along key travel routes including Snoqualmie Pass on Interstate 90 and White Pass along U.S. Highway 12.
Forecasters say breezy to locally windy conditions may accompany the snowfall, creating blowing snow and brief whiteout conditions in higher elevations. These conditions could significantly impact travel for commuters, freight traffic, and anyone crossing the mountains between western and eastern Washington.
Additional snowfall may continue after Tuesday afternoon as the weather system lingers across the region. Officials say the pattern could lead to additional snow accumulations through midweek, though totals will vary depending on elevation and storm strength.
The National Weather Service has also issued a winter weather advisory for the Northern Blue Mountains above 4,000 feet, where 6 to 10 inches of snow may accumulate through 10 p.m. Thursday. Snow-covered roads and reduced visibility are expected in those areas.
Transportation officials recommend travelers check pass conditions before leaving, allow extra travel time, and carry winter driving gear such as tire chains. Sudden changes in visibility are possible when winds increase, particularly along exposed ridgelines and open stretches of highway.
Drivers heading through the Cascades early this week should prepare for slick pavement, slower travel speeds, and potential temporary closures if conditions worsen.
This article was produced by a journalist and may include AI-assisted input. All content is reviewed for accuracy and fairness.
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