The center of Hurricane Irma was located near latitude 19.1 North, longitude 40.5 West.
The current forecast track brings the storm within a few hundred miles of the Lesser Antilles in the eastern Caribbean by next Tuesday.
Irma, which weakened slightly overnight Friday - down to Category 2 strength with sustained winds of 110 miles per hour - is marching westward across the Atlantic Ocean.
While Irma is now a small hurricane, the size guidance suggests it should grow in size during the next 72 hours.
Hurricane Irma was quick enough to gain strength and become a hurricane in less than 24 hours after developing as a tropical storm.
Hurricane watches have been issued for the islands of Antigua, Barbuda, Anguilla, Montserrat, St. Kitts, and Nevis.
At this time, Hurricane Irma poses no immediate threat to Barbados but it will continue to be closely monitored.The path then moves the storm toward the Turks and Caicos Islands Thursday night and possibly into the Bahamas by Friday.
Hurricane-force winds extended outward up to 15 miles (30 km) from the centre and tropical-storm-force winds up to 80 miles (130 km).
It is much too early to determine what direct impacts Irma will have on the Bahamas and the continental United States. The storm weakened very slightly, with a less defined eye, but still maintains winds of 115 miles per hour. The Global Forecast System model still has Irma heading inland after making landfall in the Carolinas.
But the storm is expected to strengthen again on Sunday or Monday, when it is expected to "move over progressively warmer waters and into a more moist environment", forecasters said.
On Sunday, the Hurricane Center said Irma was nearly 1,000 miles east of the Caribbean Sea and heading west-southwest at about 15 mph.
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