© BBCHurricane Bill is expected to pass between Bermuda and the eastern coast of the United States.
Miami, Florida -- While Hurricane Bill looked less organized early Friday, a tropical storm warning remains in effect for Bermuda.
Tropical storm conditions, including winds of at least 39 mph (63 kph), are expected on the island within 24 hours. A hurricane watch was also in effect, meaning hurricane conditions, including winds of at least 74 mph (119 kph), are possible within 36 hours.
As of 5 a.m. ET Friday, Bill's center was about 425 miles (680 kilometers) south of Bermuda, and about 865 miles (1,390 kilometers) southeast of Cape Hatteras, North Carolina, the hurricane center said.
The storm was moving northwest at near 17 mph (28 kph), and is expected to continue that motion overnight, with a gradual turn to the north-northwest on Friday followed by a turn toward the north on Saturday.
"The core of the hurricane is expected to pass between Bermuda and the east coast of the United States on Saturday," forecasters said.