Courtesy of Brenda Veldink

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A weak warm front sliding down into southwest Washington and northwest Oregon may kick off Friday with some localized freezing drizzle. But many areas are at or just above freezing as of 5:30 a.m. and won’t experience any frozen precipitation at all. Those that are below freezing might see some ice accumulations on cars, trees, elevated surfaces, but not much on the roads. In any case, it won’t last long.

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The Oregonian/OregonLive

Forecasters with the National Weather Service believe temperatures will warm significantly above freezing by mid-morning and any precipitation will change over to just regular rain. High on Friday will be 40 degrees.



Those at higher elevations, above 1,000 feet, may see a better chance of accumulation of snow or frozen drizzle. The Cascade foothills might see some sticking snow and southern Washington and northern Oregon Cascades could see 2-4 inches through Friday.

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NOAA

East winds out of the Columbia River Gorge will develop tonight and into Saturday bringing in more cold air into the Portland metro area. Forecasters say this will increasing the chances of snow or freezing rain later Friday night and possibly into Saturday morning.

Saturday will be windy, especially near the gorge, and cold to start with a possibly wintry mix of snow or freezing rain through the morning, then drying out with a high of 42 by the afternoon.

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Forecasters are still looking at conflicting computer models for Sunday into Monday. Chances still remain for freezing precipitation both early on Sunday morning and then again Christmas eve. There are also chances the overall temperature will warm enough to avoid this. We’ll keep watching.

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Sequoias in the fog this morning. pic.twitter.com/5Vpsiido6C — Washington County (@WashcoOregon) December 21, 2017

Thursday's fog