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.

Mother Nature is about to serve up some unappetizing conditions for the millions of Thanksgiving travelers: sloppy weather, snow, the coldest temperatures since February and a potentially disruptive storm are on the way through the holiday weekend. Here’s a day-by-day look at what to expect this week.