Doyle Rice, USA TODAY
Tropical Depression Seven formed Wednesday afternoon in the Caribbean, the National Hurricane Center reported.
The depression had maximum sustained winds of 35 mph and was moving to the northwest at 9 mph. It's located about 130 miles south of San Juan, Puerto Rico.
A tropical storm warning has been issued for Puerto Rico, the hurricane center reported.
A tropical depression is the stage just before a given system becomes a named tropical storm, which occurs when its winds reach 39 mph. If the depression becomes a tropical storm, it would be called Gabrielle.
The depression's forecast path from the hurricane center shows it curving out into the Atlantic away from the USA, after dumping heavy rain as a tropical storm on Puerto Rico, the Dominican Republic and Haiti on Thursday.
So far this year, six tropical storms have formed in the Atlantic, but no hurricanes.
In recorded hurricane history, there were only two years that had no reports of hurricanes: 1907 and 1914, according to AccuWeather.