Quick Facts
- Type
- Weather Hazard
- Definition
- Turbulence encountered in cloud-free air, typically near jet streams and at h...
- Used By
- Pilots, Dispatchers
Definition#
Clear air turbulence (CAT) is turbulence that occurs in cloud-free conditions, typically at high altitudes near the jet stream, mountain waves, or sharp temperature gradients. It is not visible on weather radar.
Why It Matters Operationally#
CAT is the leading cause of in-flight turbulence injuries because it occurs without visual warning. PIREPs are the primary source of real-time CAT information.
Related Guides#
- Clear Air Turbulence Explained
- What Is Turbulence?
- Aviation Weather Explained — The Complete Operational Guide
- Air Masses & Fronts in Aviation