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How are cyclones formed?

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How are cyclones formed?

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  1. This site should have all your answers...its a complex mechanism....its almost like the cyclone is a living thing because it need such specific conditions to allow it to survive and form....hope the site helps


  2. Cyclogenesis is the development or strengthening of cyclonic circulation in the atmosphere (a low pressure area).Cyclogenesis is an umbrella term for several different processes, all of which result in the development of some sort of cyclone. It can occur at various scales, from the microscale to the synoptic scale. Extratropical cyclones form as waves along weather fronts before occluding later in their life cycle as cold core cyclones. Tropical cyclones form due to latent heat driven by significant thunderstorm activity, and are warm core. Mesocyclones form as warm core cyclones over land, and can lead to tornado formation.Waterspouts can also form from mesocyclones, but more often develop from environments of high instability and low vertical wind shear. Cyclogenesis is the opposite of cyclolysis, and has an anticyclonic (high pressure system) equivalent which deals with the formation of high pressure areas—Anticyclogenesis.

  3. The atmosphere receives heat from the sun but this heat is not spread uniformly through the air. The hoter air expands or rises its pressure and the cooler air contracts or has a lower pressure that all of the unaffected air.

    This results in winds which try to equilibrate the conditions again. But this is complicated by other physical phenomena so that not all of the winds can blow in the way that would simply make the average conditions more uniform and  better.

    The mass of the air and the gyscopic motion due to the rotating earth result in some of the winds creating shear-layers between different parts of the air. In order that the boundaries of the shears can pass each other, a whirl or rolling ring of air needs to be generated. The resulting air-flows and temperatures associated with these shears, continue to feed this rotating situation with energy, due to the expanding and contraction volumes of air that are further away from the center of the storm.

    At the center of this kind of storm, the speed of motion of the air is very high which we feel it as cyclones, where the highly rotating mass of the air passes over or near to us. Due to its speed it actually has a local reduced pressure, which can suck on buildings and draw them up into the storm center. This distructive force can cause wide-spread damage.

  4. WHEN THE HOT AIR AND COLD AIR MEET

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