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crosswise spin

meteorology

Learn about this topic in these articles:

tornadoes

  • Tornado Alley
    In tornado: The mesocyclone

    …vertical speed shear) produces “crosswise spin,” that is, rotation about a horizontal axis crosswise to the direction of wind flow. When air containing crosswise spin flows into an updraft, the spin is drawn upward, producing rotation about a vertical axis. The veering of wind direction with height (vertical direction…

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