At least 22 people were killed as the remnants of Hurricane Ida battered New York and New Jersey with tornadoes, record rain and flooding that left the area deluged and under states of emergency on Thursday.

Videos on social media showed cars submerged on highways and water pouring into subway stations and homes after a wind-driven downpour shattered rainfall records and prompted an unprecedented flash flood emergency for New York City.

Four women, three men and a 2-year-old boy died in five separate flooding incidents in the city, police said.

In New Jersey, 14 other people were killed, including five residents at the Oakwood Plaza Apartments complex in Elizabeth and one person whose body was recovered in Passaic.

It was unclear where the residents were or how they died, a spokesperson for Elizabeth Mayor Christian Bollwage confirmed to NBC News Thursday.