The NWS says "heavy" lake-effect snow is projected to bring up to 20 inches of snow in areas of upstate New York by Thursday.

Winter weather could impede Christmas travel this week in 15 states as snow falls in the Northeast, Great Lakes Region, parts of the Southwest and in Alaska.

This year, the only parts of the U.S ... allowing at least 1 inch of snow to accumulate on the ground, are seen in the map below. On Wednesday, Christmas Day, parts of the Rocky Mountains will ...