Tropical Storm Christine (1973)
Tropical Storm Christine was the first tropical cyclone to form as far east as longitude 30° W in the Atlantic Ocean since Tropical Storm Ginger in 1967. Forming as a tropical depression over the country of Guinea on August 25, 1973, the system tracked nearly due west for several days before intensifying into a tropical storm on August 28.
Source: Wikipedia — Tropical Storm Christine (1973) (CC BY-SA 4.0)