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Long Island nor’easter predictions by the hour

Firefighters and emergency personnel work at the scene

Firefighters and emergency personnel work at the scene where a tree fell across Park Avenue in Huntington during a powerful nor'easter on Tuesday, March 14, 2017. Credit: Ed Betz

Tuesday’s powerful nor’easter lived up to its billing of unpredictability, tracking west and sparing Long Island from high snow accumulations — but pushing concerns about wind damage, power outages, flooding and erosion to the forefront. The Long Island Rail Road was operating on a weekday schedule, with storm-related delays.

About 4:25 a.m.

The National Weather Service canceled its blizzard warning for Long Island.

8 a.m. to 6 p.m.

Wind advisory: Strong northeast winds of 25 to 35 mph, with gusts to 50 mph, are predicted throughout the day across the Island, the weather service said. Winds could down trees, limbs and power lines. The strongest winds were expected along the coast. The weather service warned drivers of high-profile vehicles to use extra caution.

8 a.m. to 2 p.m.

Coastal flood warning: A coastal flood warning is in effect along Atlantic Ocean beachfront and the south bays of western Long Island, with widespread flooding expected around the times of high tide, the weather service said. The weather service predicted tides of 2 1⁄2 to 3 1⁄2 feet above astronomical tides and localized flooding related to the height of the storm tide and wave action. Along Atlantic Ocean beaches, high surf of 6 feet to 10 feet was expected to cause significant dune erosion and some washovers.

Until 1:15 p.m.

Flood advisory: Minor flooding in poor drainage areas of southern Nassau County and western Suffolk County is expected because of the combination of rain and melting snow. The weather service said communities that could be affected include Baldwin, Freeport, Long Beach, Lynbrook, Massapequa, Oceanside, Valley Stream and Woodmere in Nassau, and Babylon and Lindenhurst in Suffolk.

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