As if heavy snow and rain from potent storm systems sweeping across the U.S. wasn’t enough to cause travel delays and dampen the holiday spirit, the coldest air of the season will start to infiltrate the country starting on Thanksgiving and could last into at least the start of December.

The cold arrives late on the holiday, and then areas like Grand Rapids, Holland and South Haven could see several inches of snow over the following days.

Heavy snowfall is expected in large parts of the country this week, with at least six winter storm warnings issued.