Significant snowfall and blizzard-like conditions are expected across parts of the U.S. this week as holiday travel continues. The National Weather Service has issued winter weather advisories and winter storm warnings from the Rocky Mountains to the Great Lakes in advance of this storm.

Parts of the plains and Midwest will receive more than a foot of snow by Friday.

The storm will impact an area stretching from Colorado to northern Wisconsin and the Upper Peninsula of Michigan. Major interstates such as I-70, I-80, I-90, I-94, I-25, I-29 and I-35 will face snow, blowing snow and rain. Blowing snow in the Great Plains will make for whiteout conditions through Friday in some areas. 

As of Wednesday morning airport delays were minimal, but the inclement weather is set to last through the end of the week. Waves of moisture and warmth mean major cities will see snow, rain and ice. Warmer temperatures in Minneapolis will keep snowfall totals at a minimum, but drastic temperature swings in the coming days mean significant ice is possible.

In advance of the winter storm some airlines have issued travel waivers, allowing affected passengers to change or cancel a trip for no additional cost. 

If you have any upcoming travel planned, be sure to check with your airline for the latest information on delays or cancellations. 

As this storm moved through California, it dumped a foot of snow on parts of the Sierra -- giving many a coveted white Christmas, but also slowing travel along I-80 and surrounding areas. 

Later this week, this storm is expected to blanket the northeastern U.S. in a few inches of fresh snow. Right now, most of the accumulating snow looks to remain in the higher elevations and farther north. 

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