Simplify the following text for a Grade 10 native English-speaking person.
Original: The 1987 Pacific hurricane season officially started May 15 , 1987 in the eastern Pacific , and June 1 , 1987 in the central Pacific , and lasted until November 30 , 1987 .
Simplified: The season officially started May 15 , 1987 in the eastern Pacific , and June 1 , 1987 in the central Pacific , and lasted until November 30 , 1987 .