Early on October 15 , the storm attained hurricane intensity .
Early on October 15 , the storm continued to mature until October 16 , when it reached its peak at a strength corresponding to Category 4 status on the modern - day Saffir - Simpson Hurricane Scale .
Early on October 15 , the storm attained hurricane intensity and continued to mature until October 16 , when it reached its peak at a strength corresponding to Category 4 status on the modern - day Saffir - Simpson Hurricane Scale .