PENDLETON, Ore. – A stretch of winter weather is set to impact the eastern slopes of the Oregon Cascades and the Northern Blue Mountains of Oregon and Washington beginning overnight and lasting through midday Wednesday.
The National Weather Service in Pendleton has issued Winter Weather Advisories for the region, with widespread snow accumulations of 5 to 10 inches expected. Locally higher totals are possible in the higher terrain.
Snow will develop overnight and continue in multiple rounds of light to moderate snowfall through Wednesday. Forecasters warn that roads will become slippery, especially during nighttime and early morning hours when temperatures are coldest.
Visibility may drop to less than one mile at times in heavier snow showers, creating difficult driving conditions across mountain passes and exposed roadways.
Areas impacted include:
- East Slopes of the Oregon Cascades
- Northern Blue Mountains of Oregon and Washington
Key travel corridors affected:
- U.S. Highway 20
- Santiam Pass
- Oregon Highway 204
- Interstate 84
Drivers traveling through these areas should expect snow-covered roads, reduced visibility, and possible traction requirements. Conditions may change quickly, particularly in higher elevations and open stretches where blowing snow can further reduce visibility.
Officials recommend checking the latest road and travel conditions before departure. Oregon travelers can monitor TripCheck, while Washington drivers are encouraged to use WSDOT resources for up-to-date roadway information.
Motorists should allow extra following distance, reduce speeds, and be prepared for winter driving conditions. Carrying emergency supplies — including blankets, food, water, and a flashlight — is also advised when traveling through mountain areas during winter weather.
While snowfall totals are not expected to reach major storm levels, the extended duration and repeated periods of snowfall will likely create ongoing travel impacts through midweek.
Anyone with travel plans through the Cascades or Blue Mountains should stay alert for updated forecasts and advisories as conditions evolve.
