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Long Island forecast: Flash flood watch Monday into Tuesday

Santiago Villatoro, 8, from Ronkonkoma kicks a soccer

Santiago Villatoro, 8, from Ronkonkoma kicks a soccer ball at Harborfront Park in Port Jefferson on Sunday, July 11, 2021. Credit: Morgan Campbell

Here we go again.

The National Weather Service has issued a flash flood watch for Western Long Island Monday afternoon and evening, saying areas already soaked by Elsa will flood more easily with the expected heavy rains.

In fact, the system coming in Monday sounds a lot like the tropical storm that just left Long Island last week.

The weather service said to expect possible thunderstorms with two to three inches of rain, wind gusts of more than 58 mph, and an outside chance of hail and even an isolated tornado.

The flash flood watch is from 2 p.m. Monday to 10 a.m. Tuesday, the weather service said. The coverage area subject to the warning includes Nassau and Western Suffolk.

The system comes ahead of a warm front that will bring chances of wet weather through the week, starting in the early morning hours of Monday, with temperatures in the 80s and increasing through the week.

Thursday, the only predicted dry day, will be the week’s warmest day with a high about 86 under partly sunny skies with a nighttime low of 72.

Then rain is possible again both Friday and Saturday with highs in the mid- to upper-80s.

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