Simplify the following text for a Grade 10 native English-speaking person.
Original: Late on October 10 , the typhoon attained the equivalence of a Category 4 on the Saffir-Simpson Hurricane Scale , and the next day it became a super typhoon .
Simplified: Late on October 10 , the typhoon reached Category 4 strength on the Saffir-Simpson Hurricane Scale , and the next day it became a `` super typhoon '' .