On October 10, a tropical wave entered the Atlantic from Africa. The wave was vigorous and developed fairly quickly, leading to the naming of Tropical Storm Lorenzo on October 13. At the time, it was located around 1000 miles west of Cabo Verde. This was fairly late in the season for a tropical cyclone to form in the "Main Development Region" of the tropical Atlantic between Africa and the Lesser Antilles.
Lorenzo experienced significant shear out of the southwest, preventing it from intensifying much as it moved northwestward. Even after shear lessened the next day, the storm entered an area of dry mid-level air that stifled convective developement. Without moist unstable air to drive its circulation, Lorenzo began to spin down quickly. It curved toward the north-northeast and steadily weakened before dissipating on October 15.
The image above shows Lorenzo on October 14.
Lorenzo did not affect any land areas as a tropical cyclone.
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