That's because of "another atmospheric river event" that will bring copious rainfall to coastal and valley locations and 3 to 4 feet of snow to the Sierra, forecasters said. The storm will move into the Rockies by midweek: "One tricky travel area will be in and around the Denver area as snow spreads across the area on Wednesday,

Airports and highways are expected to be jam-packed during Thanksgiving week, a holiday period likely to end with another record day for air travel in the United States