The scale was originally developed by structural engineer Herbert Saffir in 1969. Hurricanes rated Category 3 and higher are known as major hurricanes. This scale does not take into account other ...
Tropical systems begin as tropical depressions, which are areas of low pressure with wind speeds of up to 38 miles per hour. When those winds strengthen and reach between 39 and 73 miles per hour, the ...
Editor's note: Read USA TODAY's coverage of Helene's landfall and impacts for Friday, Sept. 27. As monster storms like Helene approach the U.S., meteorologists use five categories to help signal the ...
The National Hurricane Center warned Florida residents Aug. 28 Tropical Storm Idalia could make landfall as a Category 3 hurricane. As residents scrambled to prepare ahead of the storm's expected ...
From 1 to 5, the numbers used to categorize hurricanes are ingrained in the minds of millions of Americans from Texas to Maine. This scale – officially known as the Saffir-Simpson Hurricane Wind Scale ...
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