High Quality Content by WIKIPEDIA articles! The 1939 Atlantic hurricane season officially began on June 16, 1939, and lasted until October 31, 1939. These dates mark the period of each year when most tropical cyclones form in the Atlantic basin. The 1939 season had below normal activity, with only five tropical storms, of which two became hurricanes and one became a major hurricane, equivalent to Category 3 status or higher on the modern-day Saffir-Simpson Hurricane Scale. The first tropical cyclone formed on June 12, and the last dissipated on November 6.