Rain, Snow, Cold for the Northwest Late Weekend, Next Week

By Michael Doll, Meteorologist

November 29,2013; 8:49PM,EST

 

 

Soaking rain, snow and a blast of cold air is heading for the Northwest later this weekend into early next week.
While the ski resorts in the Cascades and northern Rockies will welcome the fresh snow, it will create hazardous driving conditions, especially through the passes.
Snow will be heavy at times Sunday into Monday, and the heavy snowfall rates will significantly reduce visibility and cause roads to become snowpacked and treacherous.

Gusty winds over 30 mph will also accompany this storm.
The winds will cause snow to blow and drift and can also cause localized power outages by snapping off tree limbs.
Times of heavy rainfall can cause localized flooding in low-lying and poor drainage areas, especially in the foothills of the coastal ranges of Washington and Oregon and the Cascades.
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Interstate 90 through the Washington Cascades and across northern Idaho and western Montana will be affected, along with Interstate 15 in western Montana.
Snow levels will start out around 5,000 feet Sunday morning in the northern Rockies then fall Sunday night into Monday as colder air arrives, getting down to the valley floors across Idaho and Montana by Monday morning.
By late Monday into Monday night, snow levels will fall below 1,000 feet across western Washington southward into western Oregon.
Seattle, Wash., and the surrounding lowlands can get snow showers mixed with rain showers late Monday and Portland, Ore., can see a snow shower Monday night.

Temperatures across the Northwest will be abnormally cold into the middle of next week.
Several locations, including Seattle and Portland, will flirt with their record low temperatures both Tuesday night and Wednesday night.
AccuWeather.com meteorologists are forecasting nighttime temperatures to dip into the teens and 20s.

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