supercell

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supercell

[′sü·pər‚sel]
(meteorology)
A thunderstorm with a persistent rotating updraft. While rare, it produces the most severe weather such as tornadoes, strong winds, and hail.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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Clark explained: 'Using a model with 32km horizontal grid-spacing, which was typical for National Weather Service (NWS) models until 10 to 20 years ago, a supercell thunderstorm was only sampled by a single grid-point.
Woodall, "The operational recognition of supercell thunderstorm environments and storm structures," Weather and Forecasting, vol.
TROUBLE BREWING Supercell thunderstorm by Derek Burdeny
Supercell Thunderstorm: A mesocyclone, or large mass of rotating air up to six miles wide, develops in the midst of large storm clouds.
Reports from yachts, coupled with video evidence and weather-watch radar signatures, would strongly suggest that the 'Boxing Day Terror' occurred with a supercell thunderstorm cloud and was, therefore, a true tornado.
28 In 1920, 28 killed by tornado, Chicago's worst; accident at Three Mile Island nuclear plant in Pennsylvania, 1979; in 1984, a single supercell thunderstorm produces 12 tornadoes along a 320-mile path in the Carolinas.
* On 5 May 1995, a supercell thunderstorm with grapefruit-sized hail injured 200, dozens permanently, at the MayFest Arts Festival in Fort Worth, Texas.
I decided to wait until a particularly large supercell thunderstorm passed through before heading home.
Brandes [2] also found that, at the beginning of the tornadic phase of a supercell thunderstorm, an increase in radial flow near the tornado was observed in the radar data analysis.
A supercell thunderstorm hit the region on June 28 and caused devastation across Tyneside.