Hurricane conditions were expected along parts of the South Carolina coast Thursday morning and along the North Carolina coast later in the day.
As of 9 a.m. ET Thursday, the storm's core was about 70 miles southeast of Charleston, South Carolina, and 160 miles south-southwest of Wilmington, North Carolina, according to the National Hurricane Center.
The 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 under way.