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To be classified as a hurricane, a tropical cyclone must have one-minute-average maximum sustained winds at 10 m (33 ft) above the surface of at least 74 mph (64 kn, 119 km/h; Category 1). [1] The highest classification in the scale, Category 5 , consists of storms with sustained winds of at least 157 mph (137 kn, 252 km/h).
A Category 4 hurricane has winds of 113 to 136 kn (130 to 157 mph; 209 to 252 km/h), while a Category 5 hurricane has winds of at least 137 kn (158 mph; 254 km/h). [1] [3] A post tropical cyclone is a system that has weakened, into a remnant low or has dissipated and formal advisories are usually discontinued at this stage. [1]
A Category 5 Atlantic hurricane is a tropical cyclone that reaches Category 5 intensity on the Saffir–Simpson hurricane wind scale, within the Atlantic Ocean to the north of the equator. They are among the strongest tropical cyclones that can form on Earth, having 1-minute sustained wind speeds of at least 137 knots (254 km/h ; 158 mph ; 70 m ...
Several recorded Category 5 hurricanes reached that intensity multiple times during their lifetime. Hurricanes Allen in 1980, Isabel in 2003 and Ivan in 2004 each soared to Category 5 intensity ...
But look at Hurricane Beryl, which hit Texas this week as a “mere” Category 1 storm — far weaker in wind strength than when it swept through the Caribbean as a Cat 5 just days earlier ...
Tammy turned Category 1 early in the afternoon and will remain at that intensity for the rest of the week, forecasters say. It’ll grow a little stronger but won’t reach Category 2 status.
Category 5 is the highest classification on the Saffir–Simpson hurricane wind scale and the Australian tropical cyclone intensity scale. The following lists show tropical cyclones that have reached that intensity in Earth's ocean basins. List of Category 5 Atlantic hurricanes; List of Category 5 Pacific hurricanes
It started as a Category 5 hurricane when it formed near the coast of Africa, but was downgraded to a Category 3 when it made landfall. Track Map of Hurricane Audrey, Saffir–Simpson Scale, 1957.