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.

One of the strongest storms we've seen in Massachusetts in quite a while will bring rain and snow on Thanksgiving.

A cross-country storm, a blast of Arctic air and an outbreak of showers and thunderstorms are threatening to snarl traffic and pile up delays at airports over the Thanksgiving holiday weekend, one of the nation's busiest travel periods.

Thanksgiving Day travel in the East will be impacted by winter storms. NBC News meteorologist Angie Lassman has the details on Early Today.

Parts of New York, Vermont, New Hampshire and Maine are under winter storm warnings, and precipitation is expected to begin as early as 1 a.m. on Thanksgiving Day. Higher elevations, including area ski resorts, will see snowfall that could continue through 1 a.m. on Black Friday.

Winter weather could snarl travel plans for the millions of Americans traveling for the Thanksgiving holiday this year.

The forecast for the Dolphins-Packers game is calling for a cold night in typical Green Bay fashion. The temperatures are expected to be as low as 19 degrees, with winds also coming into play that could make the atmosphere even frostier, according to Weather.com . It's anticipated to be a cloudy night in Wisconsin for the action.

With Thanksgiving holiday travel well underway, many have reached their destinations — but for everyone else, a storm tracking from the Rockies to the Midwest and Northeast into Thursday will bring rain and snow,

Don't worry about making space in your freezer for leftovers this year if you live in any of the states expected to have a chilly holiday weekend.

Some people save their Thanksgiving travel for the day-of, and those in the eastern half of the U.S. could experience disruptions.