Thanksgiving will essentially be a washout with rain expected from mid-morning until late in the evening. On a positive note, if it's going to rain on a holiday, why not one centered around the dinner table and watching football on TV.

Millions of Americans across the U.S. have started to pack the roads and airports ahead of Thanksgiving, but a powerful storm moving from coast to coast could snarl travel before the holiday and as people begin their journeys home after celebrating with family and friends.