The Big Apple experienced its second-wettest hour in history as torrential rain drenched the city overnight — with terrifying footage showing straphangers trapped on subways by the freak flash flooding.

“New York City picked up a hair over 2 inches last night — 2.07 inches to be exact — making it the second wettest single hour ever recorded in the city,” FOX Forecast Center meteorologist Christopher Tate told The Post on Tuesday.

“It was bested only by the nearly 3 inches of rain that fell in New York City during the aftermath of Hurricane Ida in 2021.”

A subway station is flooded in New York City on July 14, 2025. via REUTERS

Storm clouds move over The Empire State Building and the Manhattan Skyline before an evening thunderstorm in New York City on Monday, July 14, 2025. John Angelillo/UPI/Shutterstock

The heavy downpours wreaked havoc across the city with footage showing commuters overwhelmed by floodwaters in various subway stations.

One clip captured a deluge of water pouring into the 28th street station in Manhattan — trapping scores of people on the 1 train line.

“I’m gonna call this one in, I can’t open the doors, it’s not safe,” the conductor can be heard saying in the video.

Other videos appeared to show straphangers standing on train seats to avoid the deluge of water pooling on the floor – as one quipped: “Oh man, I might need a diaper!”

The Big Apple saw 2.07 inches of rain fall in one hour overnight. William C Lopez/New York Post

The 1, 2 and 3 trains all ended up being suspended throughout Manhattan as the MTA addressed flooding across several stations. Meanwhile, the Forest Hills-bound M and R trains operated under severe delays as multiple stations reportedly flooded in Queens.

Parts of major thoroughfares in New York, including the Saw Mill River Parkway and Cross Bronx Expressway, were temporarily closed due to flooding as New York’s emergency services agency blasted out a warning on X that parts of the city and mid-Hudson were getting hit with flash floods.

Meanwhile, JFK, LaGuardia and Newark airports were also all struck by lengthy delays as the storm rolled through.

Elsewhere across the city, footage showed water seeping through ceilings, partially submerged cars navigating flooded streets and sidewalks being turned into gushing rivers.  

MTA worker cleaning up water at the 28th St 1 line station on July 14, 2025. William C Lopez/New York Post

In the Garden State, New Jersey Gov. Phil Murphy had declared a state of emergency due to the flash flooding and heavy rainfall as he advised people to stay indoors and avoid unnecessary travel.

Cars and emergency vehicles in towns like Somerville and Plainsville were overwhelmed and even partially overturned as the rain battered the region.

In one flooded North Plainfield neighborhood, a house caught on fire and collapsed, possibly due to an explosion, not long after the family inside had evacuated, authorities said. 

Most flash flood watches and warnings expired in parts of New York and New Jersey as the rain moved on, but some roads and streets were still flooded as of early Tuesday.

While rain and scattered thunderstorms were predicted again through Tuesday, Tate said it would be nowhere near as bad as Monday’s dump.

“I think the odds of that are pretty low,” he said.