 A tropical wave entered the Atlantic Ocean from Africa on July 10 , and the wave developed into an area of low pressure while passing over Cape Verde . Despite the organization , the low failed to develop into a tropical cyclone due to cool waters on the sea surface and wind shear . However , those unfavorable conditions did not completely destroy the wave , as it continued traveling westward through the Lesser Antilles until July 18 . That day , while south of Puerto Rico , the wave split in two ; the northern half moved northwest and developed into Tropical Storm Franklin over the Bahamas , and the southern half continued westward , with its associated thunderstorm activity increasing . 
