Irma now has sustained windspeeds of 150mph, as it heads across the Bahamas, 450 miles south-east of Florida.
Hurricane and storm warnings for Haiti have been lifted but Storm surge warnings and watches are in place for large parts of southern Florida, and the Florida Keys, the southeastern, central and northeastern Bahamas, and the Turks and Caicos Islands, also four Cuban provinces.
The hurricane centre has admonished Persons located within these areas to take all necessary actions to protect life and property from rising water and the potential for other dangerous conditions.
The US states of Georgia, South Carolina and North Carolina have been warned of “life-threatening flash floods and mudslides” from next Tuesday.
More than sixty thousand people have been forced to evacuate in Florida.