A flash flood watch is in effect on Long Island through Sunday morning.
Rainfall rates of one to two inches an hour are possible, with locally three to five inches possible through tonight, according to the NWS forecast.
Areas of urban and poor drainage flooding are likely, with flash flooding possible in locations that experience successive thunderstorms moving through.
Motorists who encounter flooded roads should turn around, the weather service warned.
A flash flood watch is in effect on Long Island through Sunday morning.
Motorists who encounter flooded roads should turn around, the weather service warned.
A flash flood warning was issued by the National Weather Service earlier this morning for Riverhead and central Suffolk as thunderstorms producing heavy rain move across the island.
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