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  1. Mesocyclone - Wikipedia

    A mesocyclone is a meso-gamma mesoscale (or storm scale) region of rotation (vortex), typically around 2 to 6 mi (3.2 to 9.7 km) in diameter, most often noticed on radar within thunderstorms.

  2. NOAA's National Weather Service - Glossary

    Mesocyclone- 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).

  3. About Mesocyclones - Severe Weather

    Before thunderstorms develop, a change in wind direction and an increase in wind speed with increasing height creates an invisible, horizontal spinning effect in the lower atmosphere. This …

  4. Mesocyclone - SKYbrary Aviation Safety

    A mesocyclone is a vortex of air, approximately 2 to 10 miles in diameter, within a convective storm. In a mesocyclone, air rises and rotates around a vertical axis, usually in the same …

  5. What is a mesocyclone? - lpm.org

    Dec 14, 2024 · The National Weather Service's definition of a mesocyclone is a rotation signature appearing on Doppler radar that meets specific criteria for magnitude, vertical depth and duration.

  6. Mesocyclone | meteorology | Britannica

    On Doppler radar, the presence of a well-organized mesocyclone is indicated by a small region of concentrated shear in the wind. On one side of the mesocyclone the rotating winds flow …

  7. MESOCYCLONE Definition & Meaning - Merriam-Webster

    The meaning of MESOCYCLONE is a rapidly rotating air mass within a thunderstorm that often gives rise to a tornado.

  8. Mesocyclone - Weather Atlas

    May 25, 2023 · Mesocyclone Definition of Mesocyclone A mesocyclone is characterized as a rotating air column within an intense thunderstorm, closely associated with a supercell.

  9. Mesocyclone Definition - Natural and Human Disasters Key Term …

    A mesocyclone forms within a severe thunderstorm when warm, moist air rises and begins to rotate due to wind shear. This rotating updraft is essential for the storm's structure and …

  10. Mesocyclone: The Ultimate Guide - numberanalytics.com

    Jun 5, 2025 · Mesocyclones are large-scale circulations of air that play a crucial role in shaping weather patterns and severe storms. Understanding mesocyclones is essential for …