A flood watch has also been issued in Washington, D.C., while the Midwest also has the potential for flooding.

Forecasters warned more rain and flash flood risk is expected on July 15 after storms flooded out roads the day before.

Heavy rain has swept across parts of the Northeast, inundating sections of New York and New Jersey with flash flooding that stranded vehicles in roadways, closed subway lines and led to the declaration of a state of emergency.