The bone-chilling breeze that created brief flurries Sunday will make for a blustery overnight into Monday, when a coastal disturbance brings rough surf, potential flooding and a light rain that could turn to an icy glaze south of Long Island, the National Weather Service said Sunday.
"A low pressure system off the Carolina Coast will slowly track northeast, and move well south and east of Long Island tonight through Monday. Elevated waters levels and high surf will likely bring significant shoreline impacts for the Long Island beachfront. In addition, temperatures will be at or below freezing tonight and early Monday morning well inland as light rain begins tonight. This may result in a light glaze for mainly areas of Orange County and western Passaic County," the weather service said on its Sunday evening briefing.
There is a coastal flood advisory is in effect for Nassau County for Sunday night's high tide cycle and for Nassau and southwestern Suffolk for the high tide cycle on Monday, the service said. The advisory called for "widespread minor coastal flooding" with "locally moderate coastal flooding possible for Nassau County."
On the waters, there is a gale warning in effect for ocean waters from Fire Island Inlet to Moriches Inlet through 1 p.m. Monday, and eastern ocean waters from Moriches Inlet to Montauk Point through 6 p.m. Monday, the weather service said.
There is a 30 percent chance of rain overnight into Monday, mainly after midnight but while it will be in the 40s, it will feel a lot colder due to the wind chill. The weather service says wind chill values will be between 25 and 30 degrees with a northeast wind of 14 to 17 mph, with gusts as high as 29 mph.
The wind chill will continue to have an effect Monday, reducing the high of 44 degrees to a temperature, with the chilly breeze, of between 30 and 40 degrees. The north wind will continue to blow with gusts as high as 28 mph.
Monday night there is still a chance of showers that will last overnight but Tuesday should bring some sunshine with a high near 49 degrees and a west wind of just 8 to 11 mph.
Wednesday and Thursday will be partly sunny to mostly sunny, with highs near 48 and 50, respectively, according to the weather service.