Which factor is NOT a characteristic of stable air?

Stable air is characterized by certain physical properties that influence weather patterns and cloud formation. One of the key features of stable air is that it tends to suppress vertical motion, leading to less turbulence and more uniform conditions. The presence of steady precipitation typically corresponds with stable air, as it allows for the continuous development of clouds that can produce rain without significant interruption. Stratus clouds are also common in stable air; they form in layers and are a direct result of the cooling and stabilization of air close to the ground. Additionally, stable air can lead to poor low-level visibility, often due to the presence of fog or low-hanging clouds.

In contrast to these characteristics, good turbulent airflow is typically associated with unstable air. Unstable air promotes rising currents and turbulence, which can lead to the development of towering clouds and more variable weather conditions. Therefore, the presence of good turbulent airflow does not align with the stable air characteristics, making it the correct answer to the question regarding which factor is NOT a characteristic of stable air.