Hurricane Dorian has regained strength, becoming a Category 3 storm again with 115 mph sustained winds.
Hurricane conditions are expected along parts of the South Carolina coast Thursday morning and along the North Carolina coast later in the day.
As of 5 a.m. Thursday, the storm's core was about 80 miles south-southeast of Charleston, South Carolina and 200 miles south-southwest of Wilmington, North Carolina.
The National Hurricane Center said dangerous storm surges were possible Thursday on the North Carolina and South Carolina coasts.
Some 174,000 homes and businesses were without power in Florida, Georgia and South Carolina, which had by far the most -- 159,000.
The hurricane decimated parts of the Bahamas for 48 hours, leaving at least 20 people dead. Rescue and relief efforts have been underway.