Portland, Oregon – Travel across the Cascades is expected to turn dangerous starting early Friday as snow and strong winds overspread mountain highways in northern and central Oregon, with similar conditions extending into southern Washington.
According to the National Weather Service in Portland, a Winter Weather Advisory remains in effect from early Friday morning through Saturday afternoon for the Oregon Cascades above 4,000 feet, including Santiam Pass, Willamette Pass, McKenzie Pass, and Government Camp. Snow accumulations could reach up to 11 inches, with wind gusts approaching 45 mph, creating areas of blowing snow and sudden visibility drops.
Roads are expected to become slick, especially on bridges and overpasses along Highway 20 near Santiam Junction, Highway 22 through the Cascades of Marion and Linn counties, and Highway 58 near Willamette Pass. Travelers heading toward recreation areas such as Timothy Lake, Waldo Lake, and Breitenbush Springs should prepare for winter driving conditions.
Across the South Washington Cascades, including areas near Mount St. Helens and Indian Heaven Wilderness, snow totals up to 10 inches are possible above 4,000 feet. Gusty winds may further reduce visibility during heavier snow bands.
Drivers are urged to carry chains, allow extra travel time, and keep an emergency kit in their vehicle. ODOT recommends checking TripCheck before departing, as additional advisories or extended impacts remain possible through Saturday afternoon.
