The National Weather Service urged people to avoid travel if a flash flood warning was in place for their area.

In Plainfield, New Jersey, two people were killed when their car was swept into Cedar Brook, city officials said. This comes days after two others were killed in severe storms in Plainfield on July 3.

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

New York and New Jersey hit by torrential rain and flash floods, forcing highway closures, suspending subway lines and flight delays.

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,

A flash flood warning was in effect in New York City until 9:45 p.m., and New Jersey Gov. Phil Murphy declared a state of emergency. Middlesex, Morris and Somerset counties remained under a flood warning until 7:15 a.m. Tuesday.

Heavy rains during the evening brought flooding, road closures and power outages throughout New Jersey, which is under a state of emergency.

Dozens of flash flood warnings are in effect for millions across several states and Washington, D.C., as slow-moving summer storms impact the East Coast Monday evening. Flooding has been reported near Newark,

On Tuesday at 4:22 p.m. the NWS Raleigh NC issued a flash flood warning in effect until 7:30 p.m. The warning is for Alamance, Guilford, Orange and Person counties.

Camp Mystic's executive director began evacuating campers approximately 45 minutes after the National Weather Service issued a "life-threatening flash flooding" alert.