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The Saffir–Simpson hurricane wind scale (SSHWS) is a scale that classifies hurricanes—which in the Western Hemisphere are tropical cyclones that exceed the intensities of tropical depressions and tropical storms—into five categories distinguished by the intensities of their sustained winds.
Herbert Seymour Saffir (29 March 1917 – 21 November 2007) (/ ˈ s æ f ər / ⓘ [1]) was an American civil engineer who co-developed (with meteorologist Robert Simpson) the Saffir–Simpson Hurricane Scale for measuring the intensity of hurricanes. As recently as 2005 Saffir was the principal of Saffir Engineering [2] in Coral Gables ...
Category 4 is the second-highest hurricane classification category on the Saffir–Simpson Hurricane Scale, and storms that are of this intensity maintain maximum sustained winds of 113–136 knots (130–156 mph, 209–251 km/h). Based on the Atlantic hurricane database, 144 hurricanes have attained Category 4 hurricane status since 1851, the ...
In 1973, the National Hurricane Center introduced the Saffir-Simpson scale, a five-category rating system that classified hurricanes by wind intensity.. At the bottom of the scale was Category 1 ...
What is the Saffir-Simpson Hurricane Wind Speed scale? Developed by wind engineer Herb Saffir and meteorologist Bob Simpson, the scale was first published in the 1970s as a way to quantify the ...
The scale used for a particular tropical cyclone depends on what basin the system is located in; with for example the Saffir–Simpson hurricane wind scale and the Australian tropical cyclone intensity scales both used in the Western Hemisphere. All of the scales rank tropical cyclones using their maximum sustained winds, which are either ...
This scale – officially known as the Saffir-Simpson Hurricane Wind Scale – is a rating based on maximum sustained wind speed, which ranges from 74 to 157 mph, or higher.
Less than two hours later, at 18:00 UTC, Harvey was upgraded to a mid-range Category 1 hurricane on the Saffir–Simpson scale based on additional aircraft data. [25] Afterwards, the intensification process stalled somewhat and the eye lost some definition, despite a steady decrease in the central pressure.