Erica's Answer:A category 5 hurricane is classified as such when winds are sustained at 155 mph or greater. Most hurricanes never get even close to category 5 status. Historically speaking, hurricanes' winds can't get much stronger than 155 mph. That is why there is no higher category than category 5. These storms, which are at the very top of the Saffir-Simpson scale, cause catastrophic damage to anything they touch.