Huge parts of New York City have been warned to brace for flash floods as thunderstorms hit the region. Flash flood warnings impacted Staten Island, the Bronx, Brooklyn, Manhattan, Queens and Westchester County on Monday night, as subway stations in NYC were flooded during a torrential downpour. Stay up-to-date with the latest developments at DailyMail.com. #newyork #weather #news #flood #rains