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LI weather: Mild temps briefly interrupted by cold snap

Looking to the weekend, a strong cold front will move through, bringing the possibility of snow, depending on the track of coastal low pressure.

Light rain and patchy fog overnight should give

Light rain and patchy fog overnight should give way to a dry, mild day Thursday, Feb. 15, 2018, forecasters said. Photo Credit: News 12 Long Island

The workweek wraps up with continuing mild conditions and some patchy fog and rain overnight Thursday into Friday, forecasters say, as the weekend takes a brief turn to the cold side, introducing the potential for snow.

“Periods of light to moderate rain,” with bouts of patchy fog, move in Thursday night, according to the weather service — most likely starting after the evening commute, said Joe Pollina, weather service meteorologist in Upton.

Rain was expected to taper off around the Friday morning rush, with temperatures holding steady through the morning at around 50 degrees or so, and dipping slightly in the afternoon, he said.

Then, “a strong cold front pushes through late Friday, ushering in a noticeably colder air mass,” the weather service said, with Saturday looking to warm up to around the mid-30s.

As for Saturday night into Sunday, forecasters were “watching a coastal low to see how far north it will track,” said Rich Hoffman, News 12 Long Island meteorologist, with its track a main determiner of potential snowfall for Long Island.

The thinking as of the late afternoon Thursday forecast was for snow, with potential for rain in a few spots, to start after around 10 p.m. Saturday, with 1 to 2 inches of snow from the fast-moving storm most likely for Long Island, Pollina said. Still, conditions were not yet pinned down, and there was a 1 in 10 chance for the Island to see 2 to 4 inches, as well as the potential for none at all.

Sunday’s temperatures were looking to head up to the mid-40s, as “a significant warmup ensues” into next week, “with a deep-layered SW flow to develop as high pressure strengthens off the Eastern Seaboard,” the weather service said.

For Long Island, that could mean the upper 40s to mid-50s through midweek.

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