Hurricane category calculator › 100 mph
What category is a 100 mph hurricane?
Based on one-minute sustained winds, from the U.S. National Hurricane Center’s Saffir-Simpson scale.
100 mph sustained wind (161 km/h · 87 knots)
Category 2 hurricane
Extremely dangerous winds will cause extensive damage, with near-total power loss expected for days to weeks.
The Saffir-Simpson scale
- 0–38 mphTropical depression. Below tropical storm strength.
- 39–73 mphTropical storm. Gets a name. Can bring heavy rain and flooding.
- 74–95 mphCategory 1 hurricane. Very dangerous winds will produce some damage: roofs, gutters, large branches, power outages for a few days.
- 96–110 mphCategory 2 hurricane. Extremely dangerous winds will cause extensive damage, with near-total power loss expected for days to weeks.
- 111–129 mphCategory 3 hurricane. A major hurricane. Devastating damage will occur; electricity and water may be unavailable for days to weeks.
- 130–156 mphCategory 4 hurricane. A major hurricane. Catastrophic damage will occur; most of the area may be uninhabitable for weeks or months.
- 157+ mphCategory 5 hurricane. The strongest category. Catastrophic damage will occur; a high percentage of homes may be destroyed.
Getting ready? Use the free hurricane emergency kit checklist.
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Questions
What category hurricane is 100 mph?
Sustained winds of 100 mph (161 km/h, 87 knots) make it a category 2 hurricane on the Saffir-Simpson Hurricane Wind Scale. Extremely dangerous winds will cause extensive damage, with near-total power loss expected for days to weeks.
What does "sustained wind" mean?
The category uses one-minute sustained winds, not gusts. Gusts can be much stronger than the sustained speed.
Does the category tell the whole danger?
No. The scale only measures wind. Storm surge, flooding rain and tornadoes cause much of the harm, and even tropical storms can be deadly. Always follow local officials’ advice.
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