Over 6 inches of snow is possible in parts of Pennsylvania, including the Pocono Mountains, as a winter storm brews in the Northeast.

The National Weather Service in Cleveland's winter storm watch for Erie and Crawford counties runs from late Thanksgiving Day through Monday at 7 a.m.

The first winter storm of the season on the East Coast will be a Pennsylvania Special, with significant snowfall now anticipated in the Poconos and Laurel Highlands. Model trends over the last 24 hours have been bullish for accumulating snow even in the valleys.

There are currently no major storms forecast for the near future, but rain, wind and snow could snarl travel plans for Americans headed to the airport for the Thanksgiving holiday. Here's where travelers could see delays at major travel hubs, according to the Weather Channel:

The National Weather Service office in Sacramento, California, issued a winter storm warning for the Sierra Nevada through Tuesday, with heavy snow expected at higher elevations and wind gusts potentially reaching 55 mph. Total snowfall of roughly 4 feet was forecast, with the heaviest accumulations expected Monday and Tuesday.

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

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 tomorrow will bring rain and snow,