The National Weather Service (NWS) has issued warnings about significant snowfall and hazardous winter weather across large parts of the United States during the post-Thanksgiving travel period. This comes as millions of Americans prepare to hit the roads and skies during one of the busiest travel times of the year.

The weather heading into the weekend looks mild and dry in Denver before weather changes arrive late on Sunday and into early next week.

Tens of millions will travel during the holiday period, and weather could interrupt plans for some. Here's a look at the forecast.