Biting cold conditions – below-freezing in some areas – will sweep across a large swath of the United States Sunday while heavy, record-breaking lake-effect snow makes post-holiday travel “treacherous” and nearly “impossible” in parts of the Great Lakes region.

States braced for more whiteout conditions in the coming days as a lake-effect storm dropped several feet of snow in parts of the region by the early weekend.

A lake effect storm pummelled parts of the Great Lakes region Friday night, shutting down highways on one of the biggest travel days of the year in the US. Communities on the shores of Lake Erie and Lake Ontario - in New York state,