The Saffir–Simpson scale rates hurricanes by maximum sustained wind only. It cannot tell you the full risk at a particular place.
Wind thresholds
Category 1: 74–95 mph; 2: 96–110 mph; 3: 111–129 mph; 4: 130–156 mph; 5: 157 mph or higher. Categories 3–5 are major hurricanes.
What the number omits
The category does not account for storm surge, rainfall flooding, tornadoes, or storm size. A lower-category storm can still be life-threatening.
Use the right product
Read the current NHC advisory, wind and surge products, and local warnings. The category is a quick description of wind strength, not a personal impact forecast.
Frequently asked questions
Can a Category 1 hurricane cause severe flooding?
Yes. The category is based only on maximum sustained wind. Rainfall flooding and storm surge are separate hazards.
Does the category describe the whole storm?
No. It describes the estimated maximum sustained wind near the strongest part, not wind at every location or the storm’s size.
What does “major hurricane” mean?
NHC uses that term for Category 3, 4 or 5 hurricanes on the Saffir–Simpson wind scale.
Reviewed 2026-09-28. Independent guide; follow NHC and local authorities for safety decisions.