Most of the United States is being assailed with extreme winter weather this week as Arctic air blasts south from Canada, snow tracks up the Northeast coast and a potentially crippling winter storm takes aim at the South.

The snow is likely to fall on Sunday from the Appalachians to New England. New York City may see its largest snowfall in years.

: Winter storm warnings issued for 8 counties expecting heavy snow Sunday MORE: Up to 10 inches of snow in possible ‘bomb cyclone’ winter storm Winter storm watches have been issued for eight counties in northern New Jersey as the state braces for a weekend storm system that could drop as much as 6 to 10 inches of snow in some areas and create dangerous road conditions across the region