NEW YORK — A powerful nor’easter is expected to bring snow and heavy winds to New York City on Tuesday, according to forecasters. With the five boroughs under a winter storm watch from 4 a.m. to 6 p.m. on Tuesday, here’s what to know about the system. The city is expected to see 5 to 8 inches of snow by the end of Tuesday at rates of 1 to 2 inches an hour in the early morning, with more possible if the system pushes further south, according to the National Weather Service. “At least half a foot of snow is likely for parts of New York City and Long Island while areas of interior Connecticut and…