ORLANDO, Fla. — Tropical Storm Julia is expected to become a hurricane later Saturday, according to the National Hurricane Center. As of 5 p.m., the system was located about 55 miles south of Isla De Providencia, Colombia, with maximum sustained winds of 70 mph moving west at 17 mph. Julia’s tropical-storm-force winds have a reach of 80 miles. It is not expected to impact Florida. Hurricane conditions are expected on the coast of Nicaragua overnight. Hurricane warnings are in effect for San Andres, Providencia and the Santa Catalina Islands in Colombia, and in Nicaragua from Laguna de Perlas t…