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A mesocyclone is a type of mesovortex, approximately 1 to 10 km (0.6 to 6 mi) in diameter (the mesoscale of meteorology), within a convective storm. [6] Mesocyclones are air that rises and rotates around a vertical axis, usually in the same direction as low pressure systems in a given hemisphere.
A supercell is a thunderstorm characterized by the presence of a mesocyclone, a deep, persistently rotating updraft. [1] Due to this, these storms are sometimes referred to as rotating thunderstorms. [ 2 ]
A mesocyclone is a meso-gamma mesoscale (or storm scale) region of rotation , typically around 2 to 6 mi (3.2 to 9.7 km) in diameter, most often noticed on radar within thunderstorms. In the Northern Hemisphere , it is usually located in the right rear flank (back edge with respect to direction of movement) of a supercell , or often on the ...
The supercell developed a mesocyclone and maintained it for over 50 miles (80 km). [10] Then, at 10:52 am CDT, the supercell produced a strong but short-lived EF2 tornado over at Pekin. The tornado touched down north of State Highway 9, mainly uprooting trees and downing power lines before it crossed the Illinois River. The tornado made it ...
The relationship between descending reflectivity cores and tornadogenesis in supercell thunderstorms is a significant area of interest for meteorologists, given the potential of DRCs to influence storm dynamics and tornado formation. DRCs have been observed to impact the low-level wind fields in supercells, a critical factor in tornado development.
The supercell is the strongest of the thunderstorms, most commonly associated with large hail, high winds, and tornado formation. Precipitable water values of greater than 31.8 millimetres (1.25 in) favor the development of organized thunderstorm complexes. [6]
Mini-supercell – A distinct kind of supercell that is smaller than a typical supercell. See low topped supercell. Mini-tornado – A fallacious term often used in European news media to refer to tornadoes occurring there; even large, strong, and/or long track tornadoes produced by supercells. This is apparently due to the erroneous perception ...
The Lemon technique is largely a continuation of work by Keith A. Browning, who first identified and named the supercell. [ 2 ] [ 3 ] [ 4 ] The method focuses on updrafts and uses weather radar to measure quantities such as height ( echo tops ), reflectivity (such as morphology and gradient), and location to show features and trends described ...