A powerful winter storm packing heavy snow, rain and even severe weather is threatening Thanksgiving travel plans for millions as people across the U.S. leave home ahead of the holiday to celebrate with friends and family.

One of the strongest storms we've seen in Massachusetts in quite a while will bring rain and snow on Thanksgiving.The holiday will essentially be a washout with rain expected from mid-morning until late in the evening Thursday.

A storm and the first punch of winterlike chill will combine to cause Thanksgiving travel headaches across the eastern half of the United States as Mother Nature serves up a smorgasbord of sloppy weather.