A winter weather advisory is in effect for Suffolk County Tuesday night until 10 a.m. Wednesday, as 2 to 4 inches of snow had been expected, forecasters said. But the National Weather Service cautioned Tuesday night that the system's shift away from the coast combined with extreme dry air may result in lesser amounts.
The highest amounts initially forecast had been across the Twin Forks, according to the service. Nassau County had been predicted to get up to 2 inches, forecasters said.
Visibilities had been predicted to be "occasionally a half-mile or less," and drivers had been warned to expect "slippery travel overnight" into the morning commute, the weather service said in the advisory.
Northwest winds may gust up to 20 mph, and temperatures will be in the 15- to 20-degree range, the service said.
The predicted snow would be courtesy of the glancing effects from a storm that is hitting the Southeast, bringing wintry conditions as far south as the Gulf Coast, National Weather Service meteorologist David Stark said.
High temperatures Wednesday were expected to be in the 20s, with the wind chill making it feel like the upper teens, the weather service said. The cold was the result of an arctic air mass that has gripped the region for the last two days, but temperatures were expected to moderate later in the week.