"Preparing for Extreme Cold: What to Expect in the Pacific and Inland Northwest"

Oregon and Washington are bracing for impactful snow and ice by Saturday, with Portland likely to see snow accumulation ranging from 1 to nearly 10 inches. The timing of moisture and cold air will determine the locations and accumulation, with rain potentially creating a sheet of ice before the snow. Icy conditions are expected to increase power outage risk and make travel near impossible, especially south of Wilsonville along the Willamette Valley. Portland is expected to stay clear of the iciest conditions due to cold easterly winds, with scattered snow showers starting Friday morning and persisting through Saturday. Sub-freezing temperatures will keep any snow or ice on the ground through the start of next week.