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Long Island weather: Chance of storms for LI Tuesday night and through the week

The gazebo at Northport Village Park on Tuesday

The gazebo at Northport Village Park on Tuesday Credit: Newsday / Raychel Brightman

A National Weather Service warning of severe thunderstorms moving through Nassau has expired but a chance of storms remains Tuesday night and on and off throughout the week.

The weather service also issued a flash flood warning for Nassau until 7:30 p.m.

Daytime temperatures once again hit a steamy 90 degrees in some spots on Long Island Tuesday, setting the stage for the unsettled weather.

The chance for heavy rain and storms continues on and off through Friday, with high temperatures gradually coming down, forecasters said.

And then the heat should begin to fade, according to the weather service's Weather Prediction Center.

"A cold front will make slow progress southward across the Great Lakes and northeast U.S. through early Thursday, bringing some relief to the recent hot weather for these areas by the end of the week," the prediction center said.

Thursday on Long Island should be at least partly sunny and cooler, with a daytime high of 80 degrees. The odds of showers drop to 20% after midday.

Friday should be even cooler — the daytime high will reach 70 degrees and there is a 40% chance of more showers, the weather service said.

Saturday, Sunday and Monday hold the promise of exceptionally fine weather, with mostly sunny skies and daytime highs in the low to mid-70s predicted.

However, passing showers are at least possible during each of those three days, the weather service said, adding: "But little if any instability will allow for any precipitation to remain showers and not thunderstorms."

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