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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]
An extratropical cyclone can transform into a subtropical storm, and from there into a tropical cyclone, if it dwells over warm waters sufficient to warm its core, and as a result develops central convection. [37] A particularly intense type of extratropical cyclone that strikes during winter is known colloquially as a nor'easter.
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Depth of 26 °C isotherm on October 1, 2006. There are six main requirements for tropical cyclogenesis: sufficiently warm sea surface temperatures, atmospheric instability, high humidity in the lower to middle levels of the troposphere, enough Coriolis force to sustain a low-pressure center, a preexisting low-level focus or disturbance, and low vertical wind shear. [3]
The smallest tropical cyclone was Cyclone Ogni, which struck the Andhra Pradesh coast on October 30, 2008. The cyclone's diameter was only 100 km (62 mi). [36] The largest tropical cyclone was the 1999 Odisha Cyclone, which strike the coast of Odisha. [8] [37] The wettest tropical cyclone was Severe Cyclonic Storm ARB 01 (2004). One of the ...
A tropical cyclone rainfall climatology can be used to help forecast current or upcoming tropical cyclone impacts. The degree of a tropical cyclone rainfall impact depends upon speed of movement, storm size, and degree of vertical wind shear. One of the most significant threats from tropical cyclones is heavy rainfall. Large, slow moving, and ...
A hurricane-force extratropical cyclone in the north Atlantic in January 2016 with a distinct eye-like feature, caused by a warm seclusion. This system would later undergo tropical cyclogenesis and become Hurricane Alex. There are two models of cyclone development and life cycles in common use: the Norwegian model and the Shapiro–Keyser model ...
Officials are assessing damage after Cyclone Chido devastated the island of Mayotte over the weekend.. The worst storm to hit the Indian Ocean islands in approximately 100 years, Chido's 124 mph ...