Sisters, OR – Travel across Central Oregon’s Cascade passes could become dangerous by Tuesday evening as heavy snow and strong winds move in, reducing visibility and covering roads in snow.
According to the National Weather Service in Pendleton, a Winter Storm Warning remains in effect from 5 p.m. Tuesday through 5 a.m. Thursday for elevations above 4,000 feet along the east slopes of the Oregon Cascades. Snow totals of 6 to 12 inches are expected, with the heaviest accumulation along the Cascade crest. Wind gusts could reach 45 mph, increasing the risk of blowing snow and downed tree branches.
Communities including Sisters, Sunriver, La Pine, and Camp Sherman will see impacts, especially along U.S. 20, U.S. 26, and U.S. 97 where lighter snow at lower elevations may still create slick conditions. Travel over mountain passes will be especially hazardous late Tuesday into Wednesday morning as steady snowfall intensifies.
Officials urge residents to delay travel if possible and prepare emergency kits with chains, food, water, and blankets. Drivers should watch for sudden drops in visibility and debris on roadways from falling branches.
Conditions are expected to gradually improve Wednesday afternoon, but snow showers and slick roads may linger into early Thursday, with additional advisories possible.
