New Yorkers are on alert as the potential for flash floods and even a tornado threaten parts of New York City, Long Island, and two counties near the city.
Torrential rain is falling.
Forecasters say some places could get as much as five inches of rain in a short period of time.
Strong winds and hail also are possible.
But the biggest concern right now is the storms could trigger massive flooding.
New York Governor Kathy Hochul says drivers need to take extra care if they are on the road:
A tornado watch is out for Nassau, Westchester and Putnam counties.
While a flash flood warning has been issued for Westchester and Putnam counties as well as New York City.
Parts of New Jersey and Pennsylvania also are dealing with the aftermath of strong storms that hit their regions.