Extratropical cyclones form anywhere within the extratropical regions of the Earth (usually between 30° and 60° latitude from the
equator), either through cyclogenesis or extratropical transition
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Extratropical cyclone - WikipediaApproximate areas of extratropical cyclone formation worldwide An upper-level jet streak. DIV areas are regions of divergence aloft, which will lead to surface convergence and aid cyclogenesis. <span>Extratropical cyclones form anywhere within the extratropical regions of the Earth (usually between 30° and 60° latitude from the equator), either through cyclogenesis or extratropical transition. A study of extratropical cyclones in the Southern Hemisphere shows that between the 30th and 70th parallels, there are an average of 37 cyclones in existence during any 6-hour period.[ Summary
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