The man has been identified as 56-year-old Leighton Brown, an employee of the New York City Housing Authority.
According to local news, he was walking through east Brooklyn neighbourhood working an extra shift when the deadly incident occurred.
“We mourn deeply for the loss of Leighton Brown, a NYCHA employee who faithfully served Brooklyn residents and who was known for his warm personality,” the Office of the NYC Public Advocate wrote on social media.
The nor’easter has caused widespread power cuts. More than 160,000 households, nearly all in the north-eastern US, have lost electricity, according to tracker PowerOutage.
More than 2,400 flights were delayed and another 1,199 grounded on Saturday, according to FlightAware.
A full moon was projected to worsen coastal flooding. Streets and homes were inundated with floodwater in the coastal New Jersey communities of Surf City and Manasquan on Saturday.