Simplify the following text for a Grade 14 native English-speaking person.
Original: Upon reaching Mexico , Hurricane Dean was a Category 5 storm , but it missed major population centers and its exceptional Category 5 strength landfall caused no deaths and less damage than in the Caribbean islands it passed as a Category 2 storm .
Simplified: When it reached Mexico , Hurricane Dean was a Category 5 storm , but it missed large cities and its exceptional Category 5 strength landfall caused no deaths and less damage than in the Caribbean islands it passed as a Category 2 storm .