Florence intensified into a hurricane on Sunday and was expected to strengthen rapidly as it churned across the Atlantic Ocean and threatened to make landfall on the U.S. East Coast by the end of the week.
With winds at 75 miles per hour (120 km per hour), Florence became a Category 1 hurricane and was expected to develop into a major storm, defined as Category 3 or higher, according to the National Hurricane Center (NHC) in Miami.
The governors of Virginia, North Carolina, and South Carolina have declared states of emergency, warning residents to prepare for a dangerous storm.
"Review your emergency plans and gather your supplies now," North Carolina Governor Roy Cooper said in a statement on Sunday.
The storm's center was 750 miles (1,200 km) southeast of Bermuda at 11 a.m. EDT on Sunday. It was on track to move between Bermuda and the Bahamas on Wednesday, the NHC said.
Swells generated by Florence already were impacting Bermuda and starting to reach the U.S. coast, with life-threatening surf and rip current conditions likely, according to the NHC.
Meanwhile, Tropical Storm Isaac, with maximum sustained winds of 65 mph (100 kph) on Sunday, was about 1,500 miles east of the Windward Islands, forecasters said. The forecast showed Isaac tracking south of Puerto Rico as it strengthened into a hurricane.
(This story has not been edited by Devdiscourse staff and is auto-generated from a syndicated feed.)