Hurricane Epsilon continued to churn toward Bermuda on Thursday afternoon after making what the National Hurricane Center called a “wobbly” turn toward the northwest.
The storm, the 10th hurricane of an extremely active Atlantic season, was about 195 miles east of Bermuda, according to an 8 p.m. Eastern advisory from the hurricane center. Epsilon weakened over the course of the morning, and was moving north-northwest at nine miles per hour with maximum sustained winds of 85 miles per hour, below the strength of a Category 2 storm.
Bermuda remained under a tropical storm warning, meaning that tropical storm conditions were intermittently expected somewhere in the area through Thursday night, the center said. Epsilon’s eye was forecast to make its closest approach to the east of the island nation later Thursday evening.
Epsilon was forecast to turn toward the north-northwest on Thursday, then toward the north on Friday with an acceleration toward the northeast on Saturday. The storm is not currently expected to make landfall in the United States, but its effects will be felt, said Dennis Feltgen, a spokesman and meteorologist with the National Hurricane Center in Miami.
He said the East Coast of the United States and parts of Canada’s Atlantic coast will have large swells with rip-current conditions and life-threatening surf.
“Anyone going to the beach needs to be aware from now into the weekend,” he said.
Large sea swells generated by Epsilon had already begun affecting Bermuda, the Bahamas, the Greater Antilles and the Leeward Islands, the center said.
Emergency officials in Bermuda warned residents of the swells on Wednesday.
“I want to urge people to stay out of the water until Epsilon passes,” the minister of national security, Renee Ming, said at a news conference. She added that the hurricane was a reminder for residents to check their emergency and storm supplies, restock provisions if needed and secure outdoor furniture.
“These are the basic steps that have worked well in helping us successfully weather previous storms,” she said.
In a statement, Ms. Ming said the hurricane has continued to produce “large swells,” and reiterated an earlier warning that people “stay out of the water.” She also noted there are Dangerous Surf Advisory signs already posted at south shore beaches.
Meteorologists said that some fluctuations in intensity were possible for Epsilon, a large hurricane, but that it was expected to weaken on Thursday and into the weekend.
Epsilon quickly strengthened on Wednesday when it went from Category 1 to Category 3 within a matter of hours. “Epsilon has continued to defy expectations and rapidly intensify,” the hurricane center said in a statement on Wednesday evening.
As a Category 3, it had become the fourth major hurricane — those of Category 3 intensity or greater — of the season, which still has more than a month to go.
It was also the second major hurricane to form in the Atlantic this month, along with Delta, which slammed into Lake Charles, a Louisiana city still not recovered from a hit by Hurricane Laura in August.
Philip Klotzbach, a meteorologist at Colorado State University, noted that since 1950, there have been only five other years in which two major Atlantic hurricanes had formed in October: 1950, 1961, 1964, 1995 and 2005.
Hurricane Paulette was one of the most recent storms to affect Bermuda, knocking down power lines but causing only minimal property damage when it made landfall there on Sept. 14. The storm hovered over the island longer than the Bermuda Weather Service had predicted. Hurricane Teddy passed to the east of the island on Sept. 21, causing tropical storm conditions there.
This year’s Atlantic hurricane season is one of the most active on record, meteorologists said. So far, there have been 26 named storms, of which 10 were hurricanes. The total is near the record set in 2005, when 28 storms grew strong enough to have names; 14 of them were hurricanes, according to the National Oceanic and Atmospheric Administration.
“It was forecast to be an extremely active season, or what I call hyperactive,” Mr. Feltgen said of this year’s season. “We are staying right on the money.”
The average hurricane season produces 12 named storms, including three that develop into major hurricanes.
“We have a number of weeks left,” Mr. Feltgen said. “We are not done yet.”
He noted that Epsilon was expected to come close enough to Bermuda to cause tropical storm conditions on the archipelago. Its tropical-storm winds extend outward up to 240 miles from the center, and hurricane-force winds extend outward up to 15 miles from the center. “That is a large storm,” Mr. Feltgen said.
In May, NOAA predicted an above-normal season in the Atlantic, but in August, government scientists updated their outlook.
In recent decades, scientists have seen increased hurricane activity in the North Atlantic, by a measure that combines intensity with characteristics like duration and frequency of storms. Climate scientists say there are links between global warming and at least the intensity of hurricanes. As ocean temperatures rise, hurricanes grow stronger as warm water serves as the fuel that powers them.
Allyson Waller and Azi Paybarah contributed reporting.