Sierra Nevada: The National Weather Service office issued a winter storm warning through Tuesday, with heavy snow expected at higher elevations and wind gusts potentially reaching 55 mph. Total snowfall of roughly 4 feet was forecast, with the heaviest accumulations expected Monday and Tuesday.

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

The Transportation Security Administration expects to screen 18.3 million people at U.S. airports during the same seven-day stretch.