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.

A storm that was pounding California's Sierra Nevada with snow Tuesday took aim at the Colorado Rockies and could roll east and slam the Appalachians on Thanksgiving Day, bringing unsettled travel weather to millions of Americans hitting the skies and roads for the holiday weekend.