Forecasters said Florence is expected to continue moving farther inland across the Carolinas through the weekend before turning toward the central Appalachian Mountains early next week.
The US National Hurricane Centre in its 8 a.m. tropical storm update reported Tropical Storm Isaac's centre was 25 miles east of Dominica and 80 miles southeast of Guadeloupe.
Forecasters warned that drenching rains of 1 to 3½ feet (30 centimeters to 1 meter) as the hurricane-turned-tropical storm crawls westward across North and SC could trigger epic flooding well inland over the next few days.
SAN JUAN, Puerto Rico - Power outages were reported across Puerto Rico Friday morning as Tropical Depression Isaac dropped rain across the US territory.
Subtropical Storm Joyce has maximum sustained winds of near 45 miles per hour (75 km/h) with higher gusts.
A National Weather Service satellite monitoring Hurricane Florence has recorded a wave reaching 83 feet in the storm churning in the Atlantic Ocean. Tropical storm force winds extend outward up to 175 miles from the center. Near the coast, the surge will be accompanied by large waves.
The Ocean Resort Casino announced on Twitter that they were at capacity Thursday morning, and rooms were booked up through Saturday, September 15.
Hurricane Helene is likely to head towards the United Kingdom, meteorologists are predicting.
Baker said the rain will bring damaging flash flooding to all areas of the Wilmington region, not just low-lying areas that are particularly vulnerable. Swells generated by the storm could produce life-threatening surf and rip current conditions.
While there are no watches or warnings for the Virgin Islands at the present time, there is the potential that some winds of Isaac may affect St. Croix as the storm passes south of the islands on Friday morning.
The disaster area was expected to get about as much rain in three days as the 1999 Dennis and Floyd storms dropped in two weeks.