Simplify the following text for a Grade 8 native English-speaking person.
Original: The season officially lasted from June 1 , 2001 , to November 30 , 2001 , dates which by convention limit the period of each year when tropical cyclones tend to form in the Atlantic Ocean basin .
Simplified: The season officially started on June 1 , 2001 , and it ended on November 30 , 2001 . This time period is when tropical cyclones usually form in the Atlantic Ocean .