Portland, OR – Hazardous winter travel conditions are expected to continue across the Cascade Mountains east of Portland through Wednesday, as snow, strong winds, and rapidly falling temperatures impact higher elevations.
According to the National Weather Service in Portland, Winter Weather Advisories remain in effect for the South Washington Cascades until 10 p.m. Wednesday and for the northern and central Oregon Cascades until 4 p.m. Snow accumulations of 6 to 12 inches are expected above 3,000 feet in the South Washington Cascades, while portions of the Oregon Cascades could see 4 to 8 inches.
Forecasters say winds will be a significant factor, with gusts ranging from 50 to 65 mph at times. These strong winds could lead to blowing snow and reduced visibility near mountain passes, including Government Camp, Santiam Pass, Willamette Pass, and areas near Mount St. Helens and Larch Mountain.
In the Oregon Cascades, precipitation is expected to begin as rain before transitioning to snow early Wednesday morning as a cold front moves through. Temperatures are forecast to drop rapidly below freezing, creating a flash freeze risk that could cause wet roads to quickly turn icy, especially at pass level.
The National Weather Service warns that roads, bridges, and overpasses are likely to become slick and hazardous. Travel may be difficult for drivers without proper winter equipment, including tire chains. Walking surfaces may also be slippery in higher elevation communities and recreation areas.
Drivers planning mountain travel are urged to check the latest road conditions through TripCheck in Oregon or the Washington State Department of Transportation before departing. Officials recommend carrying a winter emergency kit and allowing extra travel time if travel cannot be avoided.
