“As millions take to the roads and skies leading up to Christmas, rainstorms will drench the East as snowstorms plunge across the West.  According to the American Automobile Association (AAA), one in three Americans will take a trip during the holiday season with the number of travelers expected to top 100 million for the first time on record.  People traveling by vehicle in the mountains of the West will need to have tire chains on hand. Windshield wipers will get a workout along much of the Pacific coast.”

Accuweather.com