A natural way to think of it would be analogous to the saffir-simpson hurricane scale that is based on maximum sustained wind speed.

一种自然的思考方式是比照基于最高持续风力的萨菲尔—辛曾森飓风等级。

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Scientists use the Saffir-Simpson Hurricane Scale to measure the intensity of storms based on wind speed.

VOA: special.2010.08.24

The forecast said three to five of the hurricanes will be major storms ranked Category 3 or higher on the Saffir-Simpson scale of hurricane strength.

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In a report released Tuesday, CSU's Tropical Meteorology Project (TMP) forecast half of those hurricanes will develop into major hurricanes ranked as Category 3 or higher on the Saffir-Simpson scale of hurricane strength.

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The Saffir-Simpson scale assigns a storm a number between 1 and 5, with "1" being a weak hurricane and "5" the strongest.

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