PORTLAND, Ore. (KOIN) — The National Weather Service Office in Portland has issued a Winter Storm Warning in effect from 5 p.m. Tuesday through 5 a.m. Thursday morning for the Oregon and Southern Washington Cascades above 2,500 feet.
Heavy snow is now forecast across the Cascades, with total accumulations of 10 to 20 inches likely by Thursday morning. Heaviest snowfall accumulations are expected in the Cascades of Marion and Lane counties. A trough of low pressure will develop over the Gulf of Alaska and swing down across the Pacific Northwest Tuesday into Wednesday, bringing much cooler than normal conditions with scattered showers in the valley and snow in the Cascades above 3500 ft.
The National Weather Service reminds people to drive with extreme caution and consider taking a winter storm safety kit along with you, including tire chains, booster cables, a flashlight, a shovel, blankets, and extra clothing, along with water and a first aid kit, anytime you’re traveling over the Cascades during adverse driving conditions.
The change to cooler and wetter conditions will then be followed by clearing skies and the potential for valley frost later in the week…