Farther to the east, Ireland and the United Kingdom are also watching Ophelia's track, which could bring hurricane conditions to some areas there early next week.
According to JLT Re's Hurricane Activity report, as of 8am Greenwich Mean Time (GMT) today (13 October) Ophelia had strengthened to a Cat 2 Hurricane, with peak wind speeds of 104 miles per hour.
A weather warning has been issued for Cornwall as Hurricane Ophelia sweeps the Atlantic.
The Miami-based hurricane center says Ophelia should lose a little strength in the next 48 hours but is expected to remain a hurricane for the next couple of days.
Northern Ireland on Friday is enjoying unseasonably warm weather, but warnings are in place for the after effects of Hurricane Ophelia set to hit early next week.
Hurricane Ophelia is meandering far out at sea in the eastern Atlantic, southwest of the Azores.
Hurricane Ophelia is beating an usual path. Temperatures in the mid-Atlantic are typically too cool for hurricanes to develop.
Hurricane-force winds extend outward up to 25 miles from the center, and tropical-storm-force winds extend outward up to 90 miles. Its top sustained winds were clocked at 90 miles per hour (150 kph) and the storm is moving to the north-northeast at 2 miles per hour (4 kph).
Ophelia is forecast to transition to an extratropical storm by Monday - but it could still be at hurricane strength as it moves very close to Ireland and Great Britain on Monday and Tuesday, the hurricane center said.
Experts at the U.S. Hurricane Centre confirmed gusts of 100mph are now emanating from the centre of the hurricane.