With millions of people preparing to travel for the Thanksgiving holiday, two strong storm systems are forecast to bring snow, wind and rain across a large swath of the United States this week.

Roads and airports could be jammed this holiday, according to estimates from AAA, which says this year's total could be the highest ever.

Americans are expected to set a new record for Thanksgiving travel, with nearly 80 million to hit the roads, catch flights and board cruises over the holiday period, travel group AAA said on Monday.