how is it formed?
Extratropical cyclones form anywhere within the extratropical regions of the Earth, either through cyclogenesis or extratropical transition.
Extratropical cyclone
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
cyclonic storms can form within or between air masses UNANSWERABLE what are its surface-based types? Extratropical cyclones, Subtropical cyclones and Tropical cyclones what is the first one? They are sometimes called mid-latitude cyclones or wave cyclones, are low-pressure areas which, along with the anticyclones of high-pressure areas, drive the weather over much of the Earth
wiki:22436806
Extratropical cyclone [SEP] Formation
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. A separate study in the Northern Hemisphere suggests that approximately 234 significant extratropical cyclones form each winter.