Hurricane Categories Explained
The Saffir-Simpson scale rates hurricanes from 1 to 5 based on sustained wind speed. It estimates potential damage, but it does not account for storm surge, rainfall, or the storm's size. A slow-moving Category 1 can do more damage from rain than a fast Category 3 does from wind.
Categories 3, 4, and 5 are called major hurricanes. The scale stops at 5 because building construction fails above 157 mph regardless of how much stronger the wind gets.
Category 1
74-95 mph
Very dangerous winds will produce some damage
Well-constructed frame homes could have damage to 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 likely will result in power outages that could last a few to several days.
Category 2
96-110 mph
Extremely dangerous winds will cause extensive damage
Well-constructed frame homes could sustain major roof and siding damage. Many shallowly rooted trees will be snapped or uprooted and block numerous roads. Near-total power loss is expected with outages that could last from several days to weeks.
Category 3
111-129 mph
Devastating damage will occur
Well-built framed homes may incur major damage or removal of roof decking and gable ends. Many trees will be snapped or uprooted. Electricity and water will be unavailable for several days to weeks after the storm passes.
Category 4
130-156 mph
Catastrophic damage will occur
Well-built framed homes can sustain severe damage with loss of most of the roof structure and exterior walls. Most trees will be snapped or uprooted and power poles downed. Power outages will last weeks to possibly months. Most of the area will be uninhabitable for weeks or months.
Category 5
157+ mph
Catastrophic damage, total roof failure
A high percentage of framed 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 possibly months. Most of the area will be uninhabitable for weeks or months.