Forecasters warned more rain and flash flood risk is expected on July 15 after storms flooded out roads the day before.

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

More than 50 million Americans throughout the Northeast are under flood watches on Monday, with a significant risk of flash flooding in some areas. Flash flood warnings have been issued for cities including New York City, Newark, New Jersey, and Arlington, Virginia -- including the Reagan National Airport -- through Monday evening.

Heavy rains and flash flooding in the northeast have caused two deaths in New Jersey. More rain is expected through mid-week for portions of the eastern and central U.S.

New York City and New Jersey declared a state of emergency after heavy rainfall soaked the Northeast coast, grounding flights and flooding the subway system on Monday night (14 July).

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.

The New York City area was hit with torrential rains Monday, causing flash floods that left two dead. Now, the storm has moved south and as New York City dries up, it has been hit with a heat warning.

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,

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

New Jersey is under a state of emergency after a flash flood caused at least two deaths in Plainfield and damage across Union County.