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A weather radar image of a mesoscale convective vortex (MCV) over Pennsylvania with a leading squall line. A squall line, or quasi-linear convective system (QLCS), is a line of thunderstorms, often forming along or ahead of a cold front. In the early 20th century, the term was used as a synonym for cold front (which often are accompanied by ...
A squall line is an elongated line of severe thunderstorms that can form along and/or ahead of a cold front. [11] [12] In the early 20th century, the term was used as a synonym for cold front. [13] The squall line contains heavy precipitation, hail, frequent lightning, strong straight-line winds, and possibly tornadoes and waterspouts. [14]
In the forefront, there are different cumulus species evolving from the cumulus mediocris to the cumulus congestus; behind, there are cumulonimbus calvus; finally, the huge cumulonimbus capillatus incus dominates the background showing a strong thunderstorm. A flanking line is an area of cumulus congestus or small cumulonimbus that mark an area ...
A squall line is an elongated line of severe thunderstorms that can form along or ahead of a cold front. [25] [26] In the early 20th century, the term was used as a synonym for cold front. [27] The squall line contains heavy precipitation, hail, frequent lightning, strong straight line winds, and possibly tornadoes and waterspouts. [28]
Flanking line is a line of small cumulonimbus or cumulus generally ... The average thunderstorm has a 24 km (15 mi) diameter and a height of approximately 12.2 km ...
A derecho is a significant, potentially destructive weather event that is characterized as having widespread, long-lived, straight-line winds associated with a fast-moving group of severe ...
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A storm that pummeled dozens of Midwest states with snow during the weekend also brought another weather phenomena, at least to Missouri: Thunder and lightning. The phenomenon, known as ...