Category One Hurricane
- Maximum Sustained Wind Speed: 74-95 miles per hour
- Damage Category: Minimal
- Approximate Pressure: Above 980 mb
- Approximate Storm Surge: 3-5 feet
- Examples: Hurricane Lili (2002) in Louisiana; Hurricane Gaston (2004) in South Carolina
Category Two Hurricane
- Maximum Sustained Wind Speed: 96-110 miles per hour
- Damage Category: Moderate
- Approximate Pressure: 979-965 mb
- Approximate Storm Surge: 6-8 feet
- Example: Hurricane Isabel (2003) in North Carolina
Category Three Hurricane
- Maximum Sustained Wind Speed: 111-130 miles per hour
- Damage Category: Extensive
- Approximate Pressure: 964-945 mb
- Approximate Storm Surge: 9-12 feet
- Examples: Hurricane Katrina (2005) in Louisiana; Hurricane Jeanne (2004) in Florida; Hurricane Ivan (2004) in Alabama
Category Four Hurricane
- Maximum Sustained Wind Speed: 131-155 miles per hour
- Damage Category: Extreme
- Approximate Pressure: 944-920 mb
- Approximate Storm Surge: 13-18 feet
- Example: Hurricane Charley (2004) in Florida; Hurricane Iniki (1992) in Hawaii; the Galveston Hurricane (1900) in Texas
Category Five Hurricane
- Maximum Sustained Wind Speed: Above 155 miles per hour
- Damage Category: Catastrophic
- Approximate Pressure: Below 920 mb
- Approximate Storm Surge: More than 18 feet
- Examples: Only three Category 5 hurricanes have struck the United States since records began: The Labor Day Hurricane (1935) in the Florida Keyes, Hurricane Camille (1969) near the mouth of the Mississippi River, and Hurricane Andrew (1992) in Florida
There is no Category Six for hurricanes. While some have suggested such a category, since only three Category Five storms have struck the United States, Category Five would appear to be more than adequate.
