From Associated Press:
Heavy rain swept across parts of the U.S. Northeast on Monday night, inundating sections of New York and New Jersey with flash flooding that stranded vehicles in roadways, closed subway lines and led to a declaration of a state of emergency.
Most flash flood watches and warnings expired in parts of New Jersey, New York and Pennsylvania as the rain moved on, but some roads and streets were still flooded as of Tuesday morning. New Jersey Gov. Phil Murphy declared a state of emergency due to flash flooding and heavy rainfall, advising people to stay indoors and avoid unnecessary travel. A video posted to social media by CBS showed flood waters bring a major roadway in Scotch Plains, New Jersey, to a standstill, stranding buses.