| List Of Category 5 Atlantic Hurricanes |
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This is a list of all recorded Atlantic Hurricane s that have reached Category 5, the highest classification of Tropical Cyclone intensity on the Saffir-Simpson Hurricane Scale . Category 5 storms are the most catastrophic hurricanes that can form, and occur only about once every three years on average in the Atlantic basin. Only four times — in the 1960 , 1961 , 2005 and 2007 hurricane seasons — have multiple Category 5 hurricanes formed. Only in 2005 have more than two category 5 storms formed, and only in 2007 has more than one made landfall at category 5 strength. STATISTICS A Category 5 hurricane has sustained winds greater than 135 Knots (155 Mph , 250 Km/h ). "Sustained winds" refers to the average wind speed observed over one minute at 10 Meters (33 Feet ) above ground. Brief gusts in hurricanes are typically up to 50 percent higher than sustained winds. Because a hurricane is (usually) a moving system, the wind field is asymmetric, with the strongest winds on the right side (in the Northern Hemisphere ), relative to the direction of motion. The highest winds given in advisories are those from the right side. Between 1928 and 2007 , 31 hurricanes have been recorded at Category 5 strength. No Category 5 hurricanes were observed officially before 1928. It can be presumed that earlier storms reached Category 5 strength over open waters, but the strongest winds were not measured. Reanalysis of weather data is ongoing by researchers who may upgrade or downgrade other Atlantic hurricanes currently listed at Categories 4 and 5. LISTS OF CATEGORY 5 ATLANTIC HURRICANES Listed in chronological order as a Category 5]] This is a list of all of the Category 5 hurricanes in the order in which they formed. Before the advent of reliable geostationary Satellite coverage in 1966, the number of tropical cyclones in the Atlantic Ocean was underestimated. It is therefore probable that there are additional Category 5s other than those listed, but they were not reported and therefore not recognized. Wind speeds are rounded to the nearest five units. Many older estimates are unreliable because measurement equipment would often be destroyed or damaged in the extreme conditions present in a Category 5 hurricane.
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