Severe Thunderstorms Trigger Flash Flood Warnings Across New York City
Flash Flood Alerts Issued for NYC
The National Weather Service (NWS) has declared a flash flood warning for a significant portion of New York City following intense thunderstorms that unleashed heavy rainfall on Saturday. Reports from New York Metro Weather indicate that certain areas experienced rainfall rates of two to three inches within just one hour, significantly heightening the risk of rapid flooding on roads, highways, underpasses, and other low-lying urban locations.
This warning is part of a larger regional flood watch, with meteorologists cautioning that multiple rounds of thunderstorms could impact the area throughout the day. The flash flood warning encompasses four of the five boroughs of New York City—Brooklyn, Queens, Manhattan, and Staten Island—as well as parts of northeastern New Jersey, including Bergen, Essex, Hudson, Passaic, and Union counties. The NWS noted that the heavy downpour was overwhelming local drainage systems, thereby increasing the chances of flash flooding.
NOW: Driver sitting ontop of truck surrounded by floodwaters on the Long Island Expressway in Queens, NYCVideo by Dakota Santiago | Licensing @FreedomNTV desk@freedomnews.tv pic.twitter.com/XcW0eCVick
— Oliya Scootercaster 🛴 (@ScooterCasterNY) July 18, 2026
New York City Emergency Management (NYCEM) has activated its Flash Flood Emergency Plan, collaborating with emergency services, utility companies, and weather experts to coordinate response efforts. Meteorologists predict widespread rainfall totals between one and one-and-a-half inches, but they also warn that repeated thunderstorms over the same areas could lead to local accumulations ranging from two to four inches.
Flash flooding inundated parts of the city Saturday as powerful thunderstorms swept through. In Queens, an entrance to the Roosevelt Avenue-Jackson Heights subway station was flooded. Heavy rain sent water pouring into the station, leaving commuters wading through flooded… pic.twitter.com/hpZ9H2XWqk
— Eyewitness News (@ABC7NY) July 18, 2026
The NWS has also cautioned that the most severe storms could generate damaging straight-line winds ranging from 50 to 70 mph (80 to 113 km/h), and an isolated tornado cannot be dismissed. NYCEM Commissioner Christina Farrell stated, "Saturday's storms will be fast-moving, but the strongest ones can produce damaging winds and intense downpours with little warning." City officials have deployed crews in advance to clear catch basins, staff emergency operations centers, and prepare teams for potential fallen trees. Mayor Zohran Mamdani has urged residents to prioritize their safety, stating, "Don't risk your safety in these dangerous conditions," on X.