"Overall, it's going to be very cold, and the wind certainly will make it feel worse," meteorologist David Stark said.
Tuesday morning, the wind chill will be in the single digits, but the big freeze is reserved for Wednesday, before the cold snap eases Thursday, the service said.
Around sunrise Wednesday, the forecast calls for temperatures in the single digits and wind gusts of up to 20 mph. "The wind chill will feel like temperatures are maybe minus two, minus three, especially across central and eastern Long Island," Stark said. The last time it was this cold was Jan. 22-24, 2011, with night temperatures in the single digits, he said.
"But the winds were very light, so the wind chill may not have been as bad then," he said. "It's been at least two years since we've seen temperatures, in combination with the wind, make it feel like what we're going to see Wednesday and Thursday morning."
On Friday, there is at least a 50 percent chance of snow or rain, and heavy snowfall is possible.