Which is NOT a condition that may indicate windshear?

Stable weather patterns are associated with consistent and predictable atmospheric behavior, which typically means there are no significant changes in wind speed or direction over short distances or altitudes. In contrast, windshear refers to a rapid change in wind speed or direction, which can pose serious challenges for aircraft during takeoff and landing.

On the other hand, virga, thunderstorm activity, and temperature inversions can all create conditions conducive to windshear. Virga occurs when precipitation evaporates before reaching the ground, often leading to downdrafts that can result in sudden changes in wind. Thunderstorm activity generates intense and unpredictable wind patterns due to strong updrafts and downdrafts. Temperature inversions create a layer of warm air above cooler air, which can trap winds and lead to dramatic shifts when the stability of the atmosphere changes, thereby contributing to windshear events.