Isaac's impact will be felt in several areas:
The government has issued a tropical storm warning for the southeastern Bahamas, including Long Cay. Tropical storm conditions are expected by late Friday.
The storm is projected to near Cuba on Saturday. The Cuban government has issued a tropical storm watch for the provinces of Camaguey, Granma, Guantanamo, Holguin, Las Tunas and Santiago de Cuba.
Puerto Rico and the Virgin Islands:
The storm was passing south of the islands Thursday, and there were tropical storm conditions forecast through Thursday evening. The forecast called for 2 to 4 inches of rain and as much as 6 inches at higher elevations. The storm surge was expected to be 1 to 3 feet higher than normal but gradually subside during the night. Dangerous surf and rip currents will affect waters there for the next few days.
Turks and Caicos:
A tropical storm warning is in effect, and tropical storm conditions are expected by late Friday.
Outer bands of the storm could reach Florida by Sunday. But the eye of the storm could make landfall anywhere from Galveston, Texas, to the Carolinas, CNN Meteorologist Chad Myers said. The five-day projection from the hurricane center puts the storm approaching U.S. landfall on the Florida peninsula Tuesday.
CNN's Gary Tuchman, Nelson Quiones, Dave Alsup, Allison Brennan, Kevin Liptak, Jason Hanna, Brad Lendon, Dave Hennen, Sean Morris and Mariano Castillo contributed to this report.