Tens of millions of residents along the East Coast are bracing for several inches of snow Sunday followed by dangerously cold temperatures that will take hold in much of the country from the Northern Plains to the tip of Maine.

"The level and extensiveness of the frigid air may be tough to match the rest of the winter," forecasters warned.

Residents across the country are bracing for dangerously low temperatures while the East Coast contends with a thick blanket of snow.