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Forecast: Possible minor flooding, winds to start a soggy Long Island week

A man walks with an umbrella in Selden

A man walks with an umbrella in Selden on Sunday. Credit: James Carbone

A coastal flood advisory from the National Weather Service was issued for very early Monday morning for southern Nassau, as Sunday's chilly, wet weather continues through the start of the week, the National Weather Service forecast said.

The weather service also issued a warning about possible minor flooding in vulnerable coastal areas of southwest Suffolk County between 3 and 6 a.m. Monday. There is a 40 to 50 percent chance of light rain Monday morning and early afternoon. Mid-afternoon “we get back to steadier, heavier rain,” with the chance of precipitation ranging from 75 to 90 percent across Long Island, weather service meteorologist Faye Morrone said Sunday evening.

And temperatures, which were expected to dip to the mid-40s overnight, won't get much past the low 50s Monday, returning back to the mid-40s Monday night, Morrone said.

That’s well below the normal high of 67 degrees at Long Island MacArthur Airport, Morrone said.

Winds of 15 to 20 miles per hour — and gusts up to 25 miles per hour — will subside toward dawn on Monday, she said.

Look for a slight warmup Tuesday, with temperatures expected to rise to the mid-50s. There is a 30 to 40 percent chance of rain. Lows will again be in mid 40s, with a possible drop into the upper 30s in parts of the pine barrens.

“We start a gradual warming Wednesday going into Thursday,” Morrone said. Highs are expected to be in the lower 60s on Wednesday and the mid 60s on Thursday. There’s a 20 to 30 percent chance of rain on Thursday, Morrone said.

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