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Long Island weather: Wind advisory until 6 p.m. Wednesday, gusts to 50 mph

The sustained winds could cause downed trees, limbs and power lines, with a potential for scattered power outages, forecasters said.

Conditions on Wednesday may be sunny with temperatures rising to the 60s, but the main story will be strong, west winds from afternoon to evening, forecasters say.

"We do have some strong winds coming our way," said News 12 Long Island meteorologist Rich Hoffman.

A wind advisory is in effect until  6 p.m. for Long Island, with winds from the west gusting up to 45 to 50 mph, the National Weather Service said. That could mean downed trees, limbs and power lines, with potential for scattered power outages.

“Winds this strong can make driving difficult, especially for high profile vehicles, in open areas, and on elevated roads and bridges,” the service said. “Use extra caution.”

That also means enhanced risk for fires to spread, should any get started, given the winds, relative humidities of 20 to 25 percent and plentiful fuel of dead grasses, twigs and branches, the weather service said.

Relative humidity is the amount of water vapor in the air compared with how much the air at that temperature can actually hold, with 20 to 25 percent meaning air is on the dry side.

A red flag warning is in place for New York City from noon to 2 a.m. Thursday, meaning “critical fire weather conditions” are forecast.

For most areas the less than quarter of an inch of rain from Tuesday’s coastal storm will be evaporated by the high winds, meaning that fuel on the ground will dry out quickly, said Joe Pollina, National Weather Service meteorologist in Upton.

“Meanwhile, temperatures this afternoon will be close to 10 degrees above normal,” the weather service said, with the low to mid-60s expected.

“Windy and warm,” with temperatures rising to the low 60s, said Hoffman.

Shortly before 1 p.m. it was 59 degrees at Long Island MacArthur Airport with 21 mph winds gusting to 26 mph. Normals for the day at the Ronkonkoma-based airport are 53 for the high and 37 the low.

The overnight hours are expected to be clear and breezy, with winds decreasing early morning Thursday. That’s as temperatures dip down to the mid-30s just before sunrise.

Conditions will then be warming up to the mid-50s, “cooler with a mix of sun and clouds,” Hoffman said. "Good weather for Mets home opener." 

Rain is likely to return after noon Friday, with highs in the upper 40s.

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