Update: The National Weather Service in Upton is now predicting about an inch of snow to fall in Riverhead Friday before 10 p.m.
The weather service is predicting 2 to 3 inches in more western points of Long Island and the New York City area.
A low temperature of 17 is predicted for Friday evening.
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The National Weather Service in Upton has issued a winter storm warning for eastern Suffolk County that is in effect from Friday morning until Friday evening.
The weather service is predicting between 2 to 5 inches of snow in most of Long Island, New York City, southeastern Connecticut and northern New Jersey with up to 7 inches of the white stuff where bands develop. The weather service said it is not known where the snow bands will develop at this time.
The snow is expected to begin falling in the morning, with heavier bands developing in the afternoon and evening.
The local forecast for Riverhead predicts an 80 percent chance of snow Friday with an accumulation of 3 to 7 inches. It also says that snow is likely on Saturday morning before noon.
“A winter storm watch means there is potential for significant snow, sleet or ice accumulations that impact travel,” the weather service states on its website. “Continue to monitor the latest forecasts.”