What is Mesocyclone?
In a severe storm, with a swirling motion in its left rear quadrant, a vertically rotating column of air, often seen with a funnel cloud or tornado cloud beneath it and detectable on Doppler radar.
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The mass of air surrounding the earth and bound to it more or less permanently by the earth's gravitational attraction.
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The lowest level of a given cloud or cloud layer in the atmosphere, relative to the observer's position above the ground.
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A storm characterized by the presence of lightning and its acoustic effect on the Earth's atmosphere known as thunder.
Observation of the sky from the observer's location where there are no clouds, and there is no obstruction to visibility....