Original: The season officially began on June 1, 1988, and lasted until November 30, 1988, although activity began on May 30 when a tropical depression developed in the Caribbean Sea.
Simplified: The 1988 Atlantic hurricane season officially began on June 1, 1988 and ended on November 30, 1988. However tropical cyclone can form outside these dates for example, Tropical Depression One formed on May 30.