Cold front heading to LI on Saturday

Forecasters are watching two developing scenarios, one that's to bring "cold and blustery winds" to the area Sunday and another that could bring snow for Thanksgiving, if a coastal low-pressure system from the south combines with another cold blast from the north.

An Arctic front is expected to move through Saturday night, "with very cold air rushing in behind" and wind chill in the teens on Sunday thanks to wind gusts of around 35 mph, the National Weather Service said. There's also a possibility of snow flurries Sunday afternoon, that would leave just a dusting, said Lauren Nash, weather service meteorologist based in Upton.

A coastal low moving up the Atlantic Coast is expected to arrive Wednesday, with the center just to the southeast of Long Island, as of Friday's forecast, Nash said. Rain would be likely for Wednesday, she said, as many people head out to Thanksgiving weekend destinations.

A cold front "associated with northern stream trough" will also be approaching, the weather service said.

If snow does materialize, it would most likely be toward the end of the system and into Thursday morning when there's about a 50 percent chance of precipitation, Nash said. With much depending on the coastal system's track, it's still too early to make calls as to precise timing and how much snow, if any, she said.