At 500 AM AST (0900 UTC), the center of Hurricane Isaac was located near latitude 14.7 North, longitude 42.7 West.
Isaac is moving toward the west near 13 mph (20 km/h). A westward motion with a slight increase in forward speed is forecast through the end of the week.
On the forecast track, Isaac is forecast to move across the Lesser Antilles and into the eastern Caribbean Sea on Thursday.
Maximum sustained winds remain near 75 mph (120 km/h) with higher gusts. Additional strengthening is expected over the next day or two.
Weakening is forecast to begin by the middle of the week as Isaac approaches the Lesser Antilles. Isaac is a small hurricane.
Hurricane-force winds extend outward up to 10 miles (20 km) from the center and tropical-storm-force winds extend outward up to 45 miles (75 km).
The estimated minimum central pressure is 993 mb (29.33 inches).