New York Flash Floods Update: NWS Warns of Life-Threatening Flooding in NYC

NYC Emergency Management has activated its Flash Flood Emergency Plan, while meteorologists predict further rainfall and possible damaging winds.

The US National Weather Service (NWS) has issued a flash flood warning for most of New York City after severe thunderstorms brought torrential rain to the metropolitan area on Saturday. According to New York Metro Weather, some areas received rainfall at rates of between two and three inches in the space of an hour, raising the risk of rapid flooding across roads, highways, underpasses and other low-lying urban areas.

The warning follows a broader regional flood watch, with forecasters warning that multiple rounds of thunderstorms could affect the region throughout the day.

The flash flood warning covers four of New York City’s five boroughs — Brooklyn, Queens, Manhattan and Staten Island — as well as parts of northeastern New Jersey, including Bergen, Essex, Hudson, Passaic and Union counties.

The NWS said heavy rainfall was overwhelming local drainage systems, increasing the likelihood of flash flooding.

New York City Emergency Management (NYCEM) said it had activated the city’s Flash Flood Emergency Plan, coordinating response efforts with emergency agencies, utility providers and weather forecasters.

Meteorologists expect widespread rainfall totals of between one and one-and-a-half inches, but warned that repeated thunderstorms moving over the same areas could produce local accumulations of between two and four inches.

The NWS also warned that the strongest storms could produce damaging straight-line winds of between 50 and 70mph (80 to 113km/h), adding that an isolated tornado could not be ruled out. “Saturday’s storms will be fast-moving, but the strongest ones can produce damaging winds and intense downpours with little warning,” NYCEM Commissioner Christina Farrell said.

City authorities said crews had been deployed in advance to clear catch basins, staff emergency operations centres and prepare teams to respond to fallen trees.

New York City Mayor Zohran Mamdani urged residents to take precautions. “Don’t risk your safety in these dangerous conditions,” he wrote on X.

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