Hurricane Betsy

Hurricane Betsy was the first tropical cyclone in the Atlantic Basin to cause at least $1 billion (1965 USD) in damage. The third tropical cyclone, second named storm, and second hurricane of the 1965 Atlantic hurricane season, Betsy developed well east of the Windward Islands from an area of disturbed weather on August 27. Forming as a tropical depression, it tracked generally west-northward until crossing on August 28. Thereafter, it tracked north-northwestward. By August 29, the depression strengthened into Tropical Storm Betsy. The storm then rapidly intensified and became a Category 1 hurricane later that day. Betsy executed a small cyclonic loop on August 30 and August 31, followed by a turn to the west on September 1. Significant intensification resumed on September 1, and by the following day, Betsy was a Category 3 hurricane. By late on September 3, Betsy became a Category 4 hurricane. While northeast of the Bahamas, Betsy became tracking erratically and executed another cyclonic loop, starting on September 4. The storm steadily weakened, and was briefly downgraded to a Category 2 hurricane early on September 6. However, the storm promptly re-strengthened into a Category 3 hurricane. Betsy then tracked southwestward and then westward through the Bahamas. By early on September 8, Betsy made landfall on Key Largo as a Category 3 hurricane. Betsy entered into the Gulf of Mexico and re-strengthened into a Category 4 hurricane on September 9. While approaching the Gulf Coast of the United States, Betsy peaked slightly below the threshold for Category 5 hurricane status. However, further intensification was halted after Betsy made landfall in Grand Isle, Louisiana later on September 9. Once inland, the storm rapidly weakened, and became extratropical over Ohio less than four days later.

• http://en.wikipedia.org/wiki/Hurricane Betsy