A tropical depression in the Atlantic Ocean east of the Caribbean strengthened Tuesday to become the season's fourth tropical storm, and it is expected to become a hurricane by Thursday, forecasters said.
Tropical Storm Danny was about 1,500 miles east of the Windward Islands at 11 p.m. ET Saturday night and was moving west at around 14 miles per hour, the National Hurricane Center said.
The Weather Channel described the storm's movement as slow, and predicted it could be a week before Danny approaches the eastern Caribbean Sea.
