As Hurricane Dorian hit the North Carolina coast—it just made U.S. landfall at Cape Hatteras—and heads northeast, New York City officials announced that beaches will be closed Friday and Saturday.

"Due to dangerous conditions from Hurricane Dorian, it is not safe to allow people in the water. Rip currents with possible ocean swells up to 10 feet are expected," a Tweet from the City of New York read. They instructed New Yorkers to "follow @NotifyNYC or call 311 for more info."

Surfers in Rockaway during Hurricane Gert, 2017.

Surfers in Rockaway during Hurricane Gert, 2017.

Surfers in Rockaway during Hurricane Gert, 2017.
Andreea Waters / Gothamist

Swells of up to 10 feet are expected. NYC Parks Commissioner Mitchell Silver said, "We implore New Yorkers to take the closures seriously and not to risk their safety by ignoring this directive and swimming and surfing while our shores are experiencing the impacts from Hurricane Dorian." (Local experienced surfers often flock to Rockaway during weather events like this; as surf photographer Andreea Waters wrote, "New York may not be a surf destination, but weather can bring world class waves.")

According to WABC 7, "Parks lifeguards and enforcement staff will be posted along the coastline to enforce the swimming and surfing ban. Closure signage will be posted at entryways of all beaches."

The last day of beach season is Sunday, September 8th.

Hurricane Dorian, which devastated the Bahamas earlier in the week, has been wreaking havoc in North Carolina. The AP reports, "Twisters spun off by Dorian peeled away roofs and flipped trailers, and more than 250,000 homes and businesses were left without power as the hurricane pushed north along the coastline, its winds weakening after sunset to 100 mph (160 kph). Trees and power lines littered flooded streets in Charleston’s historic downtown. Gusts had topped 80 mph (129 kph) in some areas."