1.2.3.2. Updraft depending on the wind

  • 10 months ago
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  • Author: SW101

Wind shear present, wind changes speed with height, but not direction

Environments with wind shear typically produce tilted updraft. Shear in which only the wind speed changes (usually increases) with height is called unidirectional or speed shear. The updraft is carried further downwind with increasing winds as it rises higher in the troposphere. Thus tilted updrafts are a visual sign of a sheared environment. Typically, if thunderstorms form in this kind of environment they are multicell thunderstorms. We will go into much more details on multicells in the upcoming chapter “Severe thunderstorms”.

Tilted Cumulus congestus, Cumulonimbus calvus and Cumulonimbus capillatus incus clouds in a moderately to strongly sheared environment.