The Saffir-Simpson Hurricane Scale classifies hurricanes into five levels of intensity.
Category 1: Sustained winds of 74-95 mph; no significant structural damage; coastal flooding; widespread power outages.
Category 2: Sustained winds of 96-110 mph; considerable damage on poor construction; power outages, loss of potable water very likely for days
Category 3: Sustained winds of 111-130 mph; destruction of homes and building without a solid foundation; power loss for weeks
Category 4: Sustained winds of 131-155 mph; heavy, irreparable damage, power loss for weeks
Category 5: Sustained winds of more than 156 mph; complete roof failure on majority of buildings; evacuations required; very few buildings stay intact; power and water loss possible for months