A mesocyclone is a vortex of air within a convective storm. It is air that rises and rotates around a vertical axis, usually in the same direction as low pressure systems in a given hemisphere. They are most often cyclonic, that is, associated with a localized low-pressure region within a severe thunderstorm. Such thunderstorms can feature strong ...
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http://en.wikipedia.org/wiki/Mesocyclone
(from the article `tornado`) Doppler radars can measure rotation in the updraft and allow forecasters to watch the formation of a mesocyclone (that is, a region of rotating air ... Tornadoes may occur wherever conditions favour the development of strong thunderstorms. Essential conditions for such storms are the presence of ... [2 re...
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http://www.britannica.com/eb/a-z/m/76
A storm-scale region of rotation, typically around 2-6 miles in diameter and often found in the right rear flank of a supercell (or often on the eastern, or front, flank of an HP storm). The circulation of a mesocyclone covers an area much larger than the tornado that may develop within it.
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http://www.encyclo.co.uk/local/22268
A cylinder of cyclonically flowing air that form vertically in a severe thunderstorm. They measure about 3 to 10 kilometers across. About 50% of them spawn tornadoes.
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http://www.physicalgeography.net/physgeoglos/m.html
No exact match found.
