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A tropical cyclone is the generic term for a warm-cored, non-frontal synoptic-scale low-pressure system over tropical or subtropical waters around the world. [4] [5] The systems generally have a well-defined center which is surrounded by deep atmospheric convection and a closed wind circulation at the surface. [4]
2. A "Hurricane" is also a tropical cyclone located at the North Atlantic Ocean or North-east Pacific Ocean which have an average storm activity and storms typically form between May 15 and November 30. 3. A "Cyclone" is a tropical cyclone that occurs in the South Pacific and Indian Oceans.
Post-tropical cyclone – a former tropical cyclone that no longer has enough tropical quantities to be considered a tropical cyclone. Post-tropical cyclones, such as remnant lows, no longer possess tropical quantities through either unfavorable conditions (e.g. increased wind shear) or land interaction.
A tropical cyclone in which the maximum sustained surface wind (using the U.S. 1-minute average) is 64 kn (74 mph or 119 km/h) or more. The term hurricane is used for Northern Hemisphere tropical cyclones east of the International Dateline to the Greenwich Meridian.
A tropical cyclone is a storm system characterized by a low-pressure center and numerous thunderstorms that produce strong winds and flooding rain. [45] A tropical cyclone feeds on heat released when moist air rises, resulting in condensation of water vapour contained in the moist air. [45]
Since 1963, the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) has assigned local names to a tropical cyclone should it move into or form as a tropical depression in their area of responsibility located between 135°E and 115°E and between 5°N-25°N, even if the cyclone has had an international name assigned to it.
August’s tropical cyclone activity “was a little below normal” in terms of the number of named storms, the hurricane center said.
Within the North Atlantic Ocean, a Category 2 hurricane is a tropical cyclone, that has 1-minute sustained wind speeds of between 83–95 knots (96–109 mph; 154–176 km/h; 43–49 m/s). [1] Since records began in 1851, a total of 246 tropical cyclones have peaked at this intensity. [2]