Bone-chilling cold is expected on the Canadian border - with temperatures predicted to go as low as -35°C - while forecasters have warned a combination of heavy snowfall and wind gusts could create "hazardous whiteout conditions" in parts of New England and northern New York.
Elsewhere, a person in Atlanta was killed when an "extremely large tree" fell on a home on Sunday, Atlanta Fire Rescue said.
(AP Photo/Timothy D. Easley)] Kentucky governor Andy Beshear said: "This is one of the most serious weather events we've dealt with in at least a decade.".
(Russ Dillingham/Sun Journal via AP)] Parts of Kentucky and Tennessee received up to 15cm of rain over the weekend - and the effects will "continue for a while", according to a senior forecaster.
Storms and severe flooding have hit areas of Kentucky, leaving eight dead and hundreds of others in need of rescue.
