New York witnessed one of its wettest days in decades on Friday as heavy rainfall knocked out several subway and commuter rail lines, stranded drivers on highways, flooded basements and shuttered a terminal at LaGuardia Airport for hours, news agency Associated Press reported.

Record rainfall

Some 8.65 inches (21.97 centimeters) of rain had fallen at John F. Kennedy Airport by nightfall Friday, surpassing the record for any September day set during Hurricane Donna in 1960, the National Weather Service said.

Parts of Brooklyn saw more than 7.25 inches (18.41 centimeters), with at least one spot recording 2.5 inches (6 centimeters) in a single hour, according to weather and city officials.

More downpours were expected Saturday.

The deluge came two years after the remnants of Hurricane Ida dumped record-breaking rain on the Northeast and killed at least 13 people in New York City, mostly in flooded basement apartments. Although no deaths or severe injuries have been reported, Friday's storm stirred frightening memories.

State of emergency declared

A state of emergency was declared in the New York city amid warnings from officials that the deluge could turn deadly, the Guardian reported late Friday. Meanwhile, news agency AFP shared a video showing submerged streets in the northeastern United States.

It said, "Heavy rains overnight in the northeastern United States left parts of New York City under water on Friday, partially paralyzing subways and airports in the country's financial capital."

Heavy rains overnight in the northeastern United States left parts of New York City under water on Friday, partially paralyzing subways and airports in the country's financial capitalCheck out