ROSEAU, Dominica -- Tropical Storm Isaac is making its way into the eastern entrance to the Caribbean and will intensify.
The National Hurricane Center says Isaac will likely approach Hispaniola, the island shared by the Dominican Republic and Haiti, as a hurricane late Thursday or early Friday.
Islands in its path are preparing. Authorities at the U.S. base in Guantanamo Bay, Cuba, have canceled several days of pretrial hearings in the case of five prisoners charged in the Sept. 11 attacks. They also plan to evacuate about 200 people, including legal teams and relatives of Sept. 11 victims.
Forecasters say Isaac also poses a possible threat to Florida during next week's Republican National Convention in Tampa, though the storm's track remains uncertain.