How severe is that hurricane you’re watching? The Saffir-Simpson Hurricane Wind Scale helps to describe that intensity at a glance.
This rating of between 1 and 5 is based on a hurricane’s maximum sustained wind speed. That means it does not take into account other potentially deadly hazards such as storm surge, rainfall flooding and tornadoes. The scale can help with estimates for potential property damage. While all hurricanes produce life-threatening winds, hurricanes rated Category 3 and higher are designated major hurricanes. These can cause devastating to catastrophic wind damage and a significant loss of life due to the strength of the winds. Here's a look at the categories:
Category 1: Sustained winds of 74-95 mph. This means well-constructed frame homes could have damage to the roof, shingles, vinyl siding and gutters. Large branches of trees will snap and shallowly rooted trees may be toppled. Extensive damage to power lines and poles could result in power outages that could last a few to several days.
Category 2: Sustained winds of 96-110 mph. This means well-constructed frame homes could sustain major roof and siding damage. Many shallowly rooted trees will be snapped or uprooted and block roads. A near-total power loss is expected with outages that could last from several days to weeks.
Category 3: Sustained winds of 111-129 mph. This means well-built frame homes may take major damage or removal of roof decking and gable ends. Many trees will be snapped or uprooted, blocking roads. Electricity and water will be unavailable for several days to weeks after the storm passes.
Category 4: Sustained winds of 130-156 mph. This means well-built frame homes can sustain severe damage with a loss of most of the roof structure and some exterior walls. Most trees will be snapped or uprooted and power poles downed. Fallen trees and power poles will isolate residential areas. Power outages will last weeks to possibly months. Most of the area will be uninhabitable for weeks or months.
Category 5: Sustained winds of 157 mph or greater. This means a high percentage of frame homes will be destroyed, with total roof failure and wall collapse. Fallen trees and power poles will isolate residential areas. Power outages will last for weeks to months. Most of the area will be uninhabitable for weeks or months.
