Flash Flood Warnings in New York City: Heavy Rains Bring Subways, Roads, and Air Travel to Standstill

After torrential rain late Monday into Tuesday morning, New York City is experiencing widespread disruption with flash flood warnings in New York City and throughout the tri-state area.

The heavy rainfall created flooded roads, flooded subway stations, massive delays on public transit, and flight delays and cancellations, essentially bringing parts of the country’s largest metropolitan region to a standstill.

Severe Weather Sparking Emergencies

On Monday night, the National Weather Service issued a flash flood warning for all five boroughs of New York City. The flash flood warning was set to expire at midnight and nearby regions such as Nassau County and New Jersey received similar warnings. New Jersey Governor Phil Murphy declared a state of emergency telling residents, “Remain indoors and avoid unnecessary travel” after stalled thunderstorms dumped a few inches of rain in just hours.

Scenes of Chaos: Flooded Subways and Streets

The storms were strong enough to overwhelm New York City’s aging infrastructure. Flooding quickly formed on primary roads like the FDR Drive and the Cross Bronx Expressway, making any entry or exit of the city difficult to impossible. Disturbing images of flooded streets and vehicles moving at a crawl splashed across social media; some sections had vehicles inching along at a literal two miles per hour while traveling on the flooded roads.

There were multiple subway stations that faced flooding as well. Some of the stairwells into the stations were now waterfalls, where water erupted from subway grates in locations like the 23rd Street and 28th Street stations. While in Manhattan and Queens passengers were trapped in stopped subway cars, some passengers were forced to walk through ankle- or higher water levels to reach another train or the exit.

The MTA cancelled service on the 1, 2, and 3 lines in Manhattan and reported major disruptions or delays on the E, F, M, and R lines because of flooding at a number of Queens stations.

Effects on Air Travel and Regional Transit

The storm also had effects on air travel. The storm caused disruptions at LaGuardia, JFK, and Newark Liberty EWR airports. Airlines reported “massive delays and cancellations,” according to monitoring services. Commuters of the Metro-North Railroad, which also listed severe delays for service on the Harlem, New Haven, and Hudson lines at the time, were affected with track flooding impacting services in the Bronx and parts of Westchester County.

Urgent Safety Warnings for Residents

Emergency Management officials cannot stress enough to residents, especially those in basement apartments and low-lying areas, to be ready for an emergency evacuation at a moment’s notice, along with phones, flashlights, and go-bags. “Flooding can be deadly and often with little or no warning,” cautioned NYC Emergency Management. “Never walk or drive through floodwaters,” and “go to higher ground whenever you can.”

Climate Change Concerns and Ongoing Risk

Meteorologists indicated 2 inch per hour rainfall rates in some places, and total rainfall amounts of 3 inches and more across parts of the city. The threat of flash flooding will linger with unstable air and saturated ground conditions keeping the risk high through today.

With residents starting the cleanup process and transit agencies working to restore service, the events have highlighted the vulnerabilities of New York City’s infrastructure in the context of flash flood warnings from New York City—and the increasing realities of extreme weather events worsened by climate change.

**Residents should continue to pay attention to information from official sources and use extreme caution until flood warnings are lifted.