A flash flood warning is in effect for southern Connecticut, northeast New Jersey and southest New York from noon Thursday until late Thursday night according to the National Weather Service. Tropical moisture surging northward from eastern North Carolina and Virginia will move up into the area this afternoon and tonight. Showers and a few thunderstorms will develop by this afternoon and continue into tonight, and the rain may be heavy at times. Average rainfall amounts of 1 1/2 to 2 inches are expected. Any heavy rainfall that occurs within a one to three hour frame may result in flash flooding. The heaviest rainfall is expected in southern Connecticut, New York City, and Long Island.
There is also a coastal flood warning for Fairfield County.