Winter storm watches are in effect for the Cascades, the Columbia River Gorge and the Hood River Valley Tuesday night through Thursday night.
The National Weather Service says potentially heavy snow and high winds could make travel difficult in mountain passes and along the Gorge, especially Wednesday evening and Thursday morning.
Forecasters say low-elevation snow along the Willamette Valley is possible, but unlikely.
They say the more likely scenario is that Portland’s West Hills and western portions of Washington County could see a rain-snow mix starting Wednesday evening.
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