Fox News Weather Center

Pre-Thanksgiving Snowstorm to Coat Boise, Casper, Salt Lake City

Winterlike conditions will continue to press south and east across the Intermountain West into Thanksgiving.

"Another early season, El Niño-driven storm will continue to move across the West into Thanksgiving," AccuWeather Meteorologist Ben Noll said.

Accumulating snow has already fallen across the Cascades, Sierra Nevada, Bitterroot Mountains and across some of the lower elevations in eastern Washington and Oregon from this storm.

Bend, Oregon, received over 1 foot of snow, more than half of the normal snowfall for the entire winter season.

Snow will set its sights across portions of Oregon, Nevada, Utah, Idaho, Montana and Wyoming, into Wednesday night.

The strength and track of this storm will determine which locations receive the heaviest snowfall on the cold side of this system.

Billings, Montana; Boise and Pocatello, Idaho; Reno and Elko, Nevada; Salt Lake City; and Lander and Casper, Wyoming, are amongst some of the cities that will receive accumulating snow through Wednesday night.

The heaviest snow is expected to be concentrated from southeastern Oregon to south-central Idaho as well as across portions of central Wyoming into Thursday. Snow totals could exceed 6 inches in these locations.

While this system tracks south and east this week, a shot of cold air from Canada will continue to dive southward across the northern and central portions of the Intermountain West.

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Travel will be poor across the Intermountain West, especially along parts of interstates 15, 25, 80 and 90, for anyone traveling for Thanksgiving. Give yourself extra time to reach your destination as roads could be snowcovered and slippery.

Travel conditions will improve across the Pacific Northwest into the northern portions of Montana.

Anyone traveling after dark will need to use caution as wet roads could start to freeze.

Low temperatures will plunge near or well below freezing across much of the Northwest. Portland, Oregon, and Seattle will be at or below freezing by Thanksgiving morning.

Daytime high temperatures across much of the northern and central Rockies will fail to reach the freezing mark through Thanksgiving. This will lead to a white Thanksgiving for many.

"Even when the snow stops on Thanksgiving Day across parts of the northern Rockies, a winterlike chill will remain with high temperatures 10-20 degrees F below normal," Noll said.

Those flying for the holiday across the West should keep checking your airline for any possible delays or cancellations.

Snow showers with a minor accumulation is expected across portions of the central Rockies on Thanksgiving Day, including Denver.