Flanking line (meteorology)
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A flanking line is an area of cumulus congestus or small cumulonimbus that mark an area of widespread updrafts on the edge of strong thunderstorms. These flanking lines generally occur in the vicinity
Structure of a flanking line. 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.
Cumulonimbus cloud
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Cumulonimbus is a dense, towering, vertical cloud, typically forming from water vapor condensing in the lower troposphere that builds upward carried by powerful buoyant air currents. Above the lower p
Cumulonimbus incus
A cumulonimbus calvus over El Bajío, Guanajuato, Mexico.
Cumulonimbus calvus
A clearly developed cumulonimbus fibrous-edged top capillatus