Bermuda was experiencing hurricane-force wind gusts on Sunday ahead of the arrival of Hurricane Igor, which could make a direct hit on the island.

Stronger winds are yet to come as Igor inches closer, the National Hurricane Center said. Tropical storm conditions and squalls already had been reported on Bermuda.

As of 10 a.m. Sunday, Igor was about 135 miles south-southwest of Bermuda and moving north at about 16 mph, the hurricane center said. The storm was a Category 1 hurricane, with maximum sustained winds of 85 mph, but “Igor is expected to remain a dangerous hurricane as it moves near or over Bermuda,” the hurricane center said.

Igor also was very large, forecasters said — hurricane-force winds extended outward up to 90 miles from the center and tropical storm-force winds outward up to 345 miles.

The official weather observance site on Bermuda reported a sustained wind of 46 mph Sunday morning, with a gust to 71 mph. An elevated observation site on the island reported a wind gust to 89 mph, the hurricane center said.

CNN iReporter Alyson Ritchie showed video of rough surf churning at Warwick Long Bay, Bermuda, ahead of the storm’s arrival. Ritchie said she lives up the street from the bay, but her home’s windows were taped and she has “plenty of supplies” on hand.

The center of Igor is projected to pass over or near Bermuda on Sunday night. Hurricane conditions were expected by Sunday afternoon and would continue throughout the evening, the hurricane center said. A hurricane warning was in effect.

“A direct hit would be the worst-case scenario, because the island would have to endure the extremely strong winds in the eyewall, as well as a dangerously high storm surge,” said CNN meteorologist Angela Fritz.

The hurricane center did not offer an estimate for how high the surge is forecast to be, but said it will produce “significant coastal flooding” and will be accompanied by “large and destructive waves,” particularly on the southern coast.

Igor is forecast to dump 6 to 9 inches of rain on the island.

Meanwhile, large swells are expected to affect the East Coast of the United States through Monday. Swells will subside over the next couple of days in locations including the Leeward Islands, Puerto Rico, the Virgin Islands, Hispaniola and portions of the Bahamas, forecasters said, but may cause dangerous surf and rip currents.

Tracking maps show Igor remaining off the coast of the United States, possibly brushing the tip of Newfoundland, Canada, next week.

Farther east in the Atlantic Ocean, Tropical Storm Julia continued spinning with considerably less threat to land than Hurricane Igor. As of 10 a.m. Sunday, the center of Julia was located about 1,325 miles west of the Azores Islands, the hurricane center said. It was heading east-northeast after making a sharp turn, and was moving at about 15 mph. Its maximum sustained winds were at about 50 mph. Julia was expected to weaken over the next two days.