Simplify the following text for a Grade 9 native English-speaking person.
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 .