1965 Atlantic hurricane season  The 1965 Atlantic hurricane season was the first to use the modern-day bounds for an Atlantic hurricane season, which are June 1 to November 30. These dates conventionally delimit the period of each year when most tropical cyclones form in the Atlantic basin. It was a slightly below average season, with 10 tropical cyclones developing and reaching tropical storm intensity. Four of the storms strengthened into hurricanes. One system reached major hurricane intensity – Category 3 or higher on the Saffir–Simpson hurricane scale. The first system, an unnamed tropical storm, developed during the month of June in the southern Gulf of Mexico. The storm moved northward across Central America, but caused no known impact in the region. It struck the Florida Panhandle and caused minor impact across much of the Southern United States. Tropical cyclogenesis halted for over two months, until Anna formed on August 21. The storm remained well away from land in the far North Atlantic Ocean and caused no impact. Hurricane Betsy was the strongest and most devastating storm of the season. Extensive damage from Betsy was reported in the Bahamas, Florida, and Louisiana, particularly the New Orleans area. It was the first hurricane in the history of the United States to result in at least $1 billion (1965 USD) in losses. Hurricane Carol meandered in the eastern Atlantic for over two weeks from mid-September to very early October. Impact on land from Carol was minimal. In late September, Tropical Storm Debbie developed in the northwestern Caribbean Sea and moved slowly across the region, before later reaching the Gulf of Mexico. The storm dissipated just offshore of Louisiana, which resulted in only minor impact along the Gulf Coast of the United States. The final tropical cyclone, Hurricane Elena, formed on October 12. Elena remained at sea for nearly a week and caused no damage on land. Collectively, the storms of the 1965 Atlantic hurricane season caused 76 fatalities and $1.45 billion in damage, almost entirely due to Hurricane Betsy. The Atlantic hurricane season officially began on June 1, 1965. This was the first Atlantic hurricane season to start on June 1 and end on November 30, which is the modern-day season bounds. It was a below average season in which six tropical depressions formed. All six of the depressions attained tropical storm status, and four of these attained hurricane status. Furthermore, one storm reached major hurricane status – Category 3 or greater on the Saffir–Simpson Hurricane Scale.