Wind shear is commonly associated with passing fronts.

• A. Passing fronts
• B. Clear skies
• C. Thunderstorms
• D. Jet streams

Answer: (A)

Wind shear is the change in wind speed and/or direction over a short distance. When a front passes, it creates a sharp boundary between two air masses with different temperatures, humidities, and wind characteristics. This boundary and the contrasting air masses lead to rapid changes in wind speed and direction with height and across the boundary, producing gusts and abrupt shifts that are characteristic of front passages. That makes front passages the most common source of wind shear in everyday weather. Clear skies usually involve steadier winds, thunderstorms can cause wind shear but it's tied to convective activity rather than the typical front-driven changes, and jet streams are high-altitude features that aren’t as closely linked to surface front passages.