Heavy rainfall in the region around New York City caused flash flooding, leading to disruptions in subway service and reports of flooded roads. The National Weather Service issued flash-flood warnings that covered several areas until mid-morning, with an additional warning for other parts of the city until later in the day. A flood watch remained in effect for the metro area until Friday night, with the Weather Service cautioning about small creeks, streams, and highways being affected. Video footage showed cars navigating through flooded roads, and the area around Kennedy International Airport had already received over 3 inches of rain.
According to forecasts, the risk of excessive rainfall will persist for the rest of the day, covering an area from Newark, N.J., to East Hampton, N.Y., extending north toward Danbury, Conn. Queens, Kings, and Nassau Counties had already experienced around three inches of rain overnight, with another one to three inches expected. The National Weather Service warned that flash flooding was ongoing or imminent. The heavy rainfall was attributed to a coastal low-pressure system, which was set to bring in moisture from the Atlantic Ocean before moving near Long Island over the weekend.
In addition to flash flooding, the storm system was also predicted to cause minor coastal flooding of up to one and a half feet and beach erosion. Areas at higher risk included the New York and New Jersey harbor, Jamaica Bay, western Great South Bay, and coastal Westchester and Fairfield Counties. The impact of the heavy rainfall and coastal flooding highlighted the vulnerability of these regions to the adverse effects of the storm system.