Florence expected to become hurricane, head to southeast U.S.

ATLANTA (AP) — The U.S. East Coast could be hit with a powerful hurricane next week as Tropical Storm Florence continues to strengthen as it moves toward the mainland, forecasters said Saturday.Florence is expected to become a major hurricane by Monday, the National Hurricane Center said, adding that "a rapid intensification" is forecast to begin Sunday.The storm is forecast to become a "major hurricane" Monday, travel between Bermuda and the Bahamas on Tuesday and Wednesday before approac