1.2.3.6. Backsheared anvil – updraft strength vs. wind shear

  • 8 months ago
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  • Author: SW101

Little or no wind shear & upper level winds

In an unstable environment with little or no wind shear, the updraft will move vertically and spread evenly (radially) as it hits equilibrium level.

Cumulonimbus capillatus incus over the plains of eastern Croatia. Virtually no wind shear: the updraft is vertical, no tilt. The anvil is spreading virtually evenly in all directions. Note another anvil in the distance to the lower right. Photo: Anton Papić.