As millions continue to dig out from a massive lake effect snowstorm, western New York and Pennsylvania braced for another storm expected later in the week. Millions more on the East Coast were in the grip of a late-autumn freeze.

The first significant lake-effect snowstorm of the season, which buried cities from Michigan to New York under 3-5 feet of snow, will finally begin to wind down on Tuesday after the relentless rounds of winter weather paralyzed travel as people tried to get home after the busy Thanksgiving holiday weekend.

The National Weather Service said "travel could be difficult to impossible" in places where snowfall is forecast to continue into the beginning of the week.

The Great Lakes region saw new snow Monday and faced the prospect of even more this week after U.S. travelers battled harsh weather to get home after Thanksgiving, forecasters said. Snow showers fell in western Michigan overnight,