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.

Millions of people across the central and eastern U.S. could see snow or rain through the Thanksgiving holiday weekend, forecasters said.