Travel bans were lifted, public transport resumed and parks reopened in the city of eight million people, easing many of the measures put in place as Winter Storm Juno moved in on Monday.

New York Mayor Bill de Blasio on Tuesday said that the city got only a fraction of 60 centimetres of snow that had been widely predicted in the 48 hours leading up to the storm.

Nevertheless UN headquarters, schools, museums and numerous shops and restaurants remained closed on Tuesday.

The National Weather Service warned that life-threatening conditions persisted along the coast from Long Island into Connecticut and Massachusetts, where more than two feet of snow blanketed some areas.
"You plan the best you can and you lean toward safety," New York state Governor Andrew Cuomo told a news conference under a barrage of questioning.

He conceded there were likely to be "some" loss of business, but said he had no estimates.

"It may actually have brought us back to full operating capacity sooner but I do not criticise weather forecasters. I learn," Cuomo said.

The clean-up is expected to continue until Wednesday, when schools will reopen, and city and state employees will return to work.

Broadway theatres announced that most shows would go ahead on Tuesday as planned, after the Great White Way went dark on Monday.

De Blasio, who repeatedly warned before the storm struck that it was likely to be one of the worst in the city's history, fended off accusations that he had been needlessly alarmist.

"To me, it was a no-brainer. We had to take precautions to keep people safe. God forbid this storm had not moved east, we would then have been hit," he said.

Had travel not been banned, city residents would have been in possible mortal danger, and any economic impact would have been far more negative had there been more destruction, he said.

"We are going to be very forceful in our messages to people when we sense danger. This is what you saw in the last 48 hours," De Blasio said.

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