Colorado Blizzard Unleashes Snow, 100-mph Winds

November 13, 2011; 3:33 PM ET
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Travel will be dangerous to impossible at times through the mountains of Colorado with a blizzard unfolding.

The Colorado Rockies will get an additional 3-6 inches of snow through tonight, bringing totals close to 2 feet for some of the highest northern and western slopes.

A snow-covered I-70 near the Eisenhower Tunnel early on Sunday morning from Colorado Dot. Snow chains are being required for all commercial vehicles on I-70 because of the snow. Portions of Route 287 were closed due to adverse weather on Sunday morning. Check Colorado Dot for the latest road conditions.

Thunder snow, which occurs when snow falls at heavy rates of 2-3 inches an hour, can occur.

Monarch Pass, Colo., reported thunder snow and wind gusts of more than 100 mph on Saturday evening.

Other Peak Wind Gusts as of Early Sunday Morning:

-Berthoud Pass: 113 mph

-Pikes Peak: 109 mph

-Cottonwood Pass: 91 mph

-3 mi. south-southwest of Air Force Academy: 86 mph

-Lyons: 84 mph

Walloping high winds over 45 mph will continue to contribute to significant blowing and drifting of snow. White-out conditions and drifting of snow onto roadways will continue to make travel dangerous along portions of I-70, Route 40 and Route 287, among other roads.

For a larger version of this snow map, visit the AccuWeather.com Winter Weather Center.

Gusty winds will whip across the I-25 corridor, causing some tricky and dangerous travel on the ground and in the air. However, the snow will not make an appearance along the Front Range as winds downslope off the mountains, drying the air out in the process.

The snow and winds are blasting Colorado as a cold front of a potent storm plows southward through the Rockies. More than a foot of snow has already fallen over portions of Wyoming and Idaho from the same storm.

More snowstorms will keep spreading into the Northwest as the storm train is in full swing this week.

"It's not totally out of the question that a few snowflakes could fall down to the valley floor west of the Cascades in places like Seattle and Everett," according to AccuWeather.com Meteorologist Brian Edwards.

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