A flood watch has also been issued in Washington, D.C., while the Midwest also has the potential for flooding.

Storms prompted flash flood warnings across the New York City metropolitan area Monday night, with photos showing severe flooding across the city and in parts of New York state and New Jersey.

The century-old system is being hit with more powerful and frequent storms, and it will take a multiagency effort to fix it.

The subway system, which is more than a century old, is relied on by millions of passengers every day and weaves the city into a cohesive network.

Flooding caused delays on multiple New York City subway lines Monday as torrential rain pummeled the Tri-State Area.

The flooding necessitated rescues, grounded planes, and submerged vehicles in waist-high water less than two weeks after flash floods in Texas killed more than 100 people, triggering concerns about the increasing number of flood fatalities in recent years because of heavier rainfall,

Two people have been killed after flash flooding hit New Jersey and New York, as parts of the northeastern US braced for more harsh weather.

New York is cleaning up and trying to dry out after Monday night's torrential rains caused flash flooding and damage.

Heavy rain swept across parts of the Northeast on Monday night, inundating sections of New York and New Jersey with flash flooding that stranded vehicles in roadways and closed subway lines.

Shocked commuters on the 1, 2, 3 line looked on as flash flooding gushed into 28th street station in Manhattan.

New Jersey's governor declared a state of emergency after heavy rains pounded the Northeast. New York City also warned residents of basement apartments to prepare for possible evacuations.