weather theoryFAA-published question bank (Private Pilot, 2008)
When may hazardous wind shear be expected?
A
When stable air crosses a mountain barrier where it tends to flow in layers forming lenticular clouds.
B
In areas of low-level temperature inversion, frontal zones, and clear air turbulence.✓ Correct Answer
C
Following frontal passage when stratocumulus clouds form indicating mechanical mixing.
Explanation
Hazardous wind shear is associated with low-level temperature inversions, frontal zones, thunderstorms and clear air turbulence (often near the jet stream), as PHAK and the Aviation Weather Handbook describe. Smooth layered flow forming lenticular clouds and post-frontal mechanical mixing are not the classic wind shear situations.
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