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Scaling a Storm


Some tropical cyclones are stronger than others. Meteorologists, or scientists who study weather, rate how strong a topical cyclone is on a scale from one to five. The weakest is a one. The most powerful is a five. This system is called the Saffir-Simpson Scale.


Saffir-Simpson Scale Category


1 2 3 4 5


Wind Speed


Kilometers Per Hour 119-153 154-177 178-209 210-250 251+


Miles


Per Hour 74-95


96-110


111-130 131-155 156+


6


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