Powerful thunderstorms hit New York area

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A system of thunderstorms moved northeast across the New York metropolitan area bringing clusters of heavy rain on Monday afternoon and evening.

The National Weather Service issued severe thunderstorm alerts, including watches and warnings, for much of the area around New York City.

"Strong winds and heavy rain are expected," the city's emergency alerts system said. "Strong winds can cause flying debris, turn unsecured objects into projectiles, and cause power outages."

A Flash Flood Watch is in effect for many counties until Thursday at 5 a.m.

What does a Flash Flood Watch mean?

"Heavy rain is expected to occur over a short period of time. Rapidly rising flood waters may quickly inundate roadways and areas of poor drainage," the NWS said. "Streams and creeks could leave their banks, flooding nearby properties."

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