A deadly winter storm system is threatening plans for millions of Americans who will fly or drive somewhere for Thanksgiving — with some of the worst weather expected on Wednesday, the busiest travel day of the year.

Storms have already heaped up to a foot of snow on the mountains of Utah and Colorado and claimed 13 lives, including a 4-year-old girl who was killed in a rollover crash on an icy road in New Mexico.

Now the weather pattern is picking up speed and heading for the Northeast, and the 43 million Americans who plan to travel for Thanksgiving are at risk. Rain and ice sweeping across the South will converge with a storm system pushing down from the Great Lakes.

In the Northeast, the worst weather is expected Tuesday and Wednesday.

“If people traveling can get out before then, or wait until afterward, that would be the best thing,”

Source NBC News