NEW YORK CITY, Sep 29 (AFP) - Heavy rains overnight in the northeastern United States left parts of New York under water on Friday, partially paralyzing subways and airports in America's financial capital.

LaGuardia airport closed down one of its terminals, with social media images showing passengers walking through water well above the tops of their shoes.

Mayor Eric Adams urged people not to venture out because the streets were blocked and subway stations flooded.

"If you are home, stay home. If you are at work or school, shelter in place for now, some of our subways are flooded and it's extremely difficult to move around the city," he said.

Images from around New York showed cars half-submerged and traffic snarled, with some major roads completely blocked.

Shopkeepers in flooded stores were trying to protect merchandise and push the water back into the streets.

The sprawling New York subway system was also hit, with several lines closed in Brooklyn.

Cab driver Ahmed Abdou, 50, originally from Egypt, blasted officials for struggling to cope with what he said was a regular phenomenon.

"The subway in the city is terrible," he said. "All the storms, they come every year at the same time. We should anticipate it better."

But Rohit Aggarwala Overall, the city's Environmental Protection Commissioner, said global warming had advanced faster than the city could act.

"This changing weather pattern is the result of climate change. And the sad reality is our climate is changing faster than our infrastructure can respond," Overall said.

New York Governor Kathy Hochul declared an official state of emergency for the city of 8.5 million and its densely-populated suburbs, including Long Island to the east and the Hudson river valley to the north.

The National Weather Service warned of flooding through late Friday with as much as two inches (5.1 centimeters) of rain falling per hour.

It said total accumulation on Friday could hit seven inches (18 centimeters), warning of flash flooding in urban and poor drainage areas.

But the train was canceled, leaving them and thousands more who live in the city's suburbs stranded.

The rain came from a low pressure system along the mid-Atlantic coast, which pulls in moist air from the ocean.

In September 2021 Hurricane Ida brought extensive flooding to the region, especially Brooklyn and Queens, leaving 13 people dead, many of them trapped in basement apartments.

Both boroughs were hit with some of the worst flooding Friday, and residents were warned to take special care.

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Photo from AFP