US National Hurricane Center
(CNN) --
Potential Tropical Cyclone 13 has developed a well-defined circulation and is now officially Tropical Depression 13, according to the 11:00 pm update from the US National Hurricane Center.
The center of the storm is now about 60 miles west southwest of Curaçao.
A hurricane watch remains in effect for the islands of San Andrés, Providencia and Santa Catalina, and a tropical storm warning is in effect for the coast of Colombia from Riohacha east to the Colombia-Venezuela border.
The cyclone is expected to strengthen into a tropical storm before potentially making landfall on the Guajira Peninsula, Colombia, on Friday morning.
Subsequently, Tropical Depression 13 is forecast to strengthen to a Category 1 hurricane before making landfall in Nicaragua on Sunday morning.
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