A group of clouds in the central Atlantic became a tropical storm on July 31. It went to the west and it became a hurricane on August 2. The hurricane quickly became a category 2 hurricane with 100 mph (160 km/h) winds. Arlene got to Bermuda on August 9. Afterwards it got wind speeds of 100 mph (160 km/h) again that night. It got weaker until it left the tropics on August 11. No one died from it.