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Long Island weather: Dry and chilly before an offshore storm overnight

Temperatures remain below average Tuesday. The storm will deliver just a "glancing blow," mostly on the East End, forecasters said.

A radar view of Long Island Tuesday afternoon.

A radar view of Long Island Tuesday afternoon. Photo Credit: Newsday

A strong coastal storm will be heading this way for Tuesday night into early Wednesday, but, given its track, Long Island is expected to get just a passing swipe, forecasters say.

The system is “really going to intensify and explode into a major nor’easter,” but the Island is getting just a “glancing blow,” said Rich Hoffman, a News 12 Long Island meteorologist.

Skies are staying dry through sunset Tuesday, with chances for precipitation starting around 8 p.m. or so,  and rain becoming likely around 11 p.m., continuing overnight, said Faye Morrone, a National Weather Service meteorologist in Upton.

The high-end rainfall amounts of around a quarter of an inch are expected the farther east you go, she said.

Some heavy rain is possible, particularly on the East End, Hoffman said, with wet weather continuing through around 6 a.m. Wednesday.

Indeed, “areas of ponding or minor flooding will be possible across eastern Long Island,” the National Weather Service said.

As for earlier Tuesday, skies become increasingly cloudy, with temperatures forecast to rise to around 50 degrees.

As of just before 2 p.m. Long Island MacArthur Airport was reporting a temperature of 48 degrees, with partly sunny skies and winds from the southeast of 16 mph. Normals for the day at the Ronkonkoma-based airport are 53 for the high and 36 the low.

By Wednesday morning there could be “a few leftover showers” over the East End, Hoffman said, with a switch to sunny skies later in the morning.

Look for windy conditions to develop Wednesday after the storm, the National Weather Service said. It “does get quite gusty” from midmorning through the afternoon and into the evening," Morrone said.

Temperatures for Wednesday? The forecast is for a rise to the low 60s.

Thursday is expected to be slightly cooler, but still above normal, with highs around the mid-50s. under mostly sunny skies. Not bad conditions for the Mets home opener.

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