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Forecast: Nor’easter to dump 3 to 10 inches of snow on Long Island

The East End is predicted to bear the brunt of the storm. But the rest of Long Island also will get several inches of wet snow and gusty winds.

The third nor'easter in two weeks is expected to move in late Monday, March 12, 2018, dumping as much as 5 to 10 inches of snow on Long Island, forecasters said. "It's really after midnight that we start to see that snow coming down," News 12 Long Island meteorologist Rich Hoffman said Monday morning. Hoffman said he expected 3 to 6 inches in Nassau and 4 to 8 inches in Suffolk, perhaps even higher on the East End. (Credit: News 12 Long Island)

The East End was looking to bear the brunt of Tuesday’s nor’easter, the third to impact Long Island in just under two weeks, with forecasters calling for 8 to 10 inches of wet, heavy snow for the Twin Forks.

The rest of Suffolk could see 5 to 8 inches, with Nassau looking at 3 to 5 and possibly 6 inches in some spots, said Brian Ciemnecki, a National Weather Service meteorologist in Upton, based on the Monday night forecast. And the Twin Forks could even see more than 10 inches in some spots, the forecast said.

A winter storm warning was in effect for Suffolk County from midnight Monday to 6 p.m. Tuesday, telling of heavy snow and “significant reductions in visibility at times,” making travel difficult, the weather service said.

“Definitely an early AM Tuesday impact, with mostly wet snow, becoming steadier and heavier through the morning,” said Richard Von Ohlen, a News 12 meteorologist.

A winter weather advisory was in place for Nassau from midnight Monday to noon Tuesday, urging drivers to look out for wet snow and slippery roads as they head to work in the morning, as well as reduced visibility.

It was looking like “rough going” for the morning commute, Ciemnecki said, particularly for those east of the William Floyd Parkway.

That’s as snow was expected to pick up in intensity after early Tuesday on Long Island, with potential for rates of up to 2 inches an hour during the predawn hours, making travel “pretty difficult, especially on the Twin Forks,” he said.

Look for wind gusts of 25 to 40 mph Tuesday morning, with the stronger winds as you head east, Ciemnecki said. Those winds, along with the heavy snow, could bring down trees and limbs, leading to power outages.

Minor coastal flooding, locally moderate in some areas, was possible at morning high tide times for vulnerable areas of the North Shore and along South Shore bays, the weather service said.

Snow was expected to wrap up in Nassau by around midmorning, Ciemnecki said, mostly ending early afternoon on the East End, with some lingering snow showers.

The next major forecast update comes after 4 a.m. Tuesday.


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