New York City faces severe flash flooding due to remnants of Tropical Storm Ophelia, submerging streets and subways, especially impacting Brooklyn, according to FOX Weather. Despite warnings and a State of Emergency declared across NYC, Long Island, and the Hudson Valley, residents encountered massive disruptions, with authorities urging people to stay indoors. Rainfall rates in some areas reached 2 inches per hour, overwhelming the city's drainage capacity. The heavy rainfall also hindered operations at LaGuardia Airport and prompted a travel advisory lasting until Saturday morning. Coastal areas along the Atlantic are also on alert for flooding conditions exacerbated by the full moon causing king tides.