The 1979 Atlantic hurricane season was the first season to include both male and female names, as well as the common six-year rotating lists of tropical cyclone names. The season officially began on June 1, and lasted until November 30. These dates conventionally delimit the period of each year when most tropical cyclones form in the Atlantic basin. It was slightly below average, with nine systems reaching tropical storm intensity. The first system, an unnumbered tropical depression, developed north of Puerto Rico on June 9. Two days later, Tropical Depression One formed and produced severe flooding in Jamaica, with 40 deaths and about $27 million (1979 USD) in damage. Tropical Storm Ana caused minimal impact in the Lesser Antilles. Hurricane Bob spawned tornadoes and produced minor wind damage along the Gulf Coast of the United States, primarily in Louisiana, while the remnants caused flooding, especially in Indiana. Tropical Storm Claudette caused extensive flooding in Texas due to torrential rainfall, resulting in two deaths and about $750 million in damage. The most intense tropical cyclone of the season was Hurricane David. It moved across the Lesser Antilles in late August, with the worst hit islands being Dominica and Martinique. The storm then strengthened further and struck Dominican Republic as a Category 5 hurricane. David was the strongest and deadliest tropical cyclone to make landfall in that country since 1930. In Dominican Republic alone, the system caused approximately 1,000 deaths and $1 billion in damage. Later, David brought wind damage, tornadoes, and flooding to portions of the East Coast of the United States. Overall, the storm resulted in 2,068 deaths and $1.54 billion in damage. Hurricane Frederic brought destruction to the Gulf Coast of the United States, especially in Alabama and Mississippi. Tropical Storm Elena brought flooding to the Greater Houston area, with five deaths and about $10 million in damage. However, little impact was reported elsewhere. Hurricane Henri remained offshore in the Gulf of Mexico and disrupted efforts to stop the Ixtoc I oil spill. Henri also caused flooding in portions of Mexico. In mid and late-September, a tropical depression caused flooding in the Southern United States, especially Texas. Four deaths were reported, two in Texas and two in Kentucky. Toward the end of October, a brief hurricane force subtropical storm struck Newfoundland, but left little impact. Other than Tropical Depression One and the tropical depression that brought flooding to the