True or False: Clear Air Turbulence (CAT) is typically found at altitudes between 20,000 to 50,000 feet in cloud-free regions.

Clear Air Turbulence (CAT) is indeed typically found at altitudes between 20,000 to 50,000 feet, which is associated with jet streams and other atmospheric conditions prevalent in cloud-free areas. This type of turbulence occurs in the absence of significant weather systems, making it challenging for pilots to predict or detect it using traditional weather radar. The presence of jet streams at higher altitudes is primarily responsible for these unpredictable turbulent conditions, predominantly found in the vertical wind shear that characterizes these air layers.

This understanding highlights the unique aspects of CAT, especially its prevalence at those specific altitudes, distinguishing it from other types of turbulence that may occur in relation to weather conditions, such as thunderstorms or frontal boundaries. Therefore, recognizing that CAT primarily occurs in cloud-free regions helps reinforce why it's marked as true.