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Chironus.

What makes a hurricane "major"?

GRC
G.R.C.

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The Saffir-Simpson scale ranks hurricanes by wind speed, and a storm of Category 3 or above counts as major.

Answer

Hurricanes are categorized using the Saffir-Simpson Hurricane Wind Scale (SS):

CategoryWind speedDamage
Category 174-95 mphVery dangerous winds will cause some damage.
Category 296-110 mphExtremely dangerous winds will cause extensive damage.
Category 3111-129 mphDevastating damage will occur.
Category 4130-156 mphCatastrophic damage will occur.
Category 5157 mph or higherCatastrophic damage will occur.

Category 3+ are categorized as major hurricanes.

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