A flash flood warning was in effect in New York City until 9:45 p.m., and New Jersey Gov. Phil Murphy declared a state of emergency. Middlesex, Morris and Somerset counties remained under a flood warning until 7:15 a.m. Tuesday.

Parts of New York City and Northern New Jersey were inundated on Monday night as widespread thunderstorms moved through.

New York and New Jersey hit by torrential rain and flash floods, forcing highway closures, suspending subway lines and flight delays.

An electrifying video shows a forked lightning bolt hit the Lower Manhattan skyscraper, illuminating the city skyline amid a severe thunderstorm.

Climate change has made extreme rainfall more common and more intense. But many flood risk maps have yet to catch up.