A NYCHA worker was killed by a falling tree in Brooklyn on Saturday afternoon — the first casualty of the nor’easter that is bearing down with extreme wind gusts on the Atlantic Coast.

The 56-year-old man suffered “trauma throughout his body” when heavy winds brought down the tree near 700 Euclid Avenue in East New York around 3:30 p.m., a police spokesman told The Post.

“We can confirm that this individual was a NYCHA employee,” a spokesperson for NYCHA told The Post in a statement. 

A blue SUV parked in front of a brick building at 700 Euclid Ave, Brooklyn, NY 11208. Google Maps

“We are deeply saddened by this tragic loss and extend our heartfelt condolences to his family and the NYCHA community.”

The unidentified worker was rushed in critical condition to Brookdale Hospital where he was pronounced dead shortly after 5 p.m., cops said.

NYCHA declined to confirm whether the man was on the job when he was killed. 

Wind gust speeds reached up to 60 mph on Saturday — and are expected to shoot up to as high as 80 mph in some areas on Sunday.

The Parks Department told The Post that employees are working 12-hour shifts through the weekend to respond to tree damage caused by the storm.

As of Saturday evening, the department has received 371 reports of downed trees, however, many of these reports are duplicates.