Residents of the east side of North America are still struggling to escape snowdrifts caused by Sunday's storms.
High winds caused the snow to drift
About 20 people are believed to have been killed in the blizzards, which swept across large parts of the US and Canada at the weekend.
The weather system dumped up to 97cm (38in) of snow on Massachusetts and 60cm (2ft) in Newfoundland.
High winds caused drifting, forcing communities to abandon ploughing and residents to stay at home.
In some of the worst-hit areas in Massachusetts - the Cape Cod peninsula and the islands of Nantucket and Martha's Vineyard - snow turned to ice, some roads remained impassable and power outages continued.
A state of emergency remained in force in the New England state, although Boston's Logan International Airport re-opened on Monday after a 30-hour shutdown.
The 20 deaths included that of a 10-year-old girl in Brooklyn, New York City, thought to have been struck by a snow plough.
The job of snow removal crews has been made harder by strong gusty winds, which have been blowing piles of snow back onto the roads.
"It's the most snow I've ever seen in my life," said Bruce MacNayr, a resident of South Dennis, Massachusetts, who was trapped in his home for 24 hours.
"I've seen a couple of blizzards in my lifetime but this is the worst." In New York City, hit by up to 45cm (1.5ft) of snow, snow ploughs worked furiously through the night to clear roads.
Commuters faced long Monday morning delays in New Jersey, where 53cm (21in) of snow fell.
In Virginia alone, a transport spokeswoman said 16,000 miles (26,000km) of major roads and 7,000 residential streets required clearing.
From the Great Lakes region down to Florida, authorities have warned of bitter cold exacerbated by the wind, sending temperatures down to -18C (-0.4F).
Meanwhile in Canada, Nova Scotia was hit by its third storm in a week, with 3m (9ft) snowdrifts in places.
In Newfoundland, precipitation from a separate storm turned to rain and ice pellets.
A weekend snowfall of up to 60cm (2ft) had blocked sewers and drainage ditches, so roads and sidewalks in the provincial capital St John's were impassable by Monday afternoon, the CBC news website reported.