New York City, New York — Millions of people across the Northeast are facing the threat of dangerous flash flooding as powerful storms move through the region, bringing torrential rain, widespread travel disruptions and growing concerns about rapidly rising water following a deadly holiday weekend heat wave.
Forecasters say more than 60 million residents from Ohio to Massachusetts and Virginia are at risk for heavy rainfall on Monday, with New York City and Long Island expected to experience some of the most significant impacts.
New York City and Long Island Face Highest Flood Risk
Weather officials have placed New York City and Long Island under a Level 3 out of 4 flash flood threat, with rainfall rates potentially reaching 3 inches per hour in some locations.
Meteorologists warn that isolated communities across the Northeast could receive as much as 8 inches of rain, creating the potential for flooded streets, overwhelmed drainage systems and rapidly rising waterways.
A Flood Watch remains in effect throughout the entire New York City metropolitan area through Monday night.
Meanwhile, Flash Flood Warnings were issued for Brooklyn and Queens after between 1 and 2 inches of rain had already fallen Monday morning, increasing concerns about additional flooding as storms continue moving through the region.
Officials Urge Residents to Prepare
City leaders are encouraging residents to remain alert as conditions continue to change.
New York City Mayor Zohran Mamdani said city crews spent the weekend clearing storm drains and preparing neighborhoods that have historically experienced flooding.
He also urged residents living in basement apartments to have evacuation plans ready if floodwaters begin to rise.
“We ask New Yorkers in this time to stay safe, stay prepared, and to keep an eye out for one another.”
The mayor also emphasized that anyone who notices rising water should immediately move to higher ground rather than attempting to remain in flooded areas.
Flooding and Storm Damage Reported Across the Region
The severe weather is already causing problems well beyond New York City.
A Flash Flood Warning was also issued for more than 2.5 million people in the Philadelphia area, where flooding had already been reported in several neighborhoods.
In Ocean Township, New Jersey, officials said severe weather likely caused part of the roof at a BJ’s Wholesale Club to collapse while customers and employees were inside. Authorities reported that 27 people were inside the building, but no injuries were reported after two individuals safely freed themselves from debris.
Storms have also caused widespread power outages across several states. According to outage reports, tens of thousands of customers in New Jersey, New York, Pennsylvania and Michigan remained without electricity Monday after severe weather swept through the region.
Hundreds of Flights Canceled as Storms Disrupt Travel
Air travel has also been heavily impacted by the dangerous weather.
More than 700 flights were canceled Monday afternoon at airports across New York and New Jersey, while major airports throughout the region experienced lengthy delays due to thunderstorms and temporary ground stops issued by the Federal Aviation Administration.
Travel disruptions also extended to Philadelphia International Airport and Ronald Reagan Washington National Airport, where departing flights experienced delays because of severe weather.
The storms arrive just days after a powerful heat wave gripped much of the eastern United States. Officials in New Jersey said the extreme heat is suspected to have contributed to at least 25 deaths, with many victims reportedly found inside homes that lacked air conditioning.
Emergency officials continue to urge residents across the Northeast to closely monitor weather updates, avoid driving through flooded roads and remain prepared as additional rounds of heavy rain move through the region.
Are you experiencing heavy rain, flooding or travel delays in your area? Share your experience and any safety tips with other readers in the comments below.