TS Phenomena MET
The descriptions of these features associated with thunderstorms are relatively straightforward.
|Tornado||A violently rotating column of air, in contact with the ground, either pendant from a cumuliform cloud or underneath a cumuliform cloud|
|Gust front||The leading edge of cold air which has descended from a cumulonimbus cloud and is moving horizontally near to the surface into warmer air|
|Squall||An atmospheric phenomenon characterized by an abrupt and large increase in wind speed with a duration of minutes which diminish rather suddenly. It is often accompanied by showers or thunderstorms|
|St Elmo's fire||A static discharge in the air|
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What phenomenon is described by the following: "A violently rotating column of air, in contact with the ground, either pendant from a cumuliform cloud or underneath a cumuliform cloud"?