Clear Air Turbulence
What is clear air turbulence?
Clear air turbulence (CAT) is turbulence that occurs without any visible moisture—meaning there are no clouds to warn you it's coming. Because it strikes in seemingly smooth, clear skies, it can catch a flight crew off guard. Think of it as invisible bumps in the road: you can't see them ahead, so they often arrive as a sudden jolt.
Also known as: CAT, clear air turbulence
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