Hazardous wind shear is more likely to occur in the presence of which atmospheric condition?

• A. High humidity at the surface
• B. Low level temperature inversion
• C. Strong solar heating at noon
• D. Freezing rain

Answer: (B)

Wind shear is a rapid change in wind speed or direction over a short vertical distance. A low-level temperature inversion creates a stable layer near the surface where air above may be moving at a different speed or direction than the air inside the layer. Because this inversion traps air and suppresses mixing, the wind can change abruptly as you pass through the inversion’s boundary, producing hazardous vertical wind shear. The other conditions don’t inherently produce that sharp vertical wind gradient: high surface humidity relates more to moisture and fog, strong solar heating promotes thermals and convective gusts rather than a sharp low-level wind change, and freezing rain involves icing conditions rather than a pronounced wind shear profile.