Daily Archives: January 22, 2013

What is clear air turbulence?

Clear-air turbulence, abbreviated “CAT,” occurs high in the atmosphere at the cruising altitude of passenger jets. CAT happens in clear sky conditions and where the wind direction and speed changes quickly with height. If you flew on a plane that experiences a jarring bumpiness and yet there are blue skies out the window, then you’ve experienced CAT. It is most common over mountains, near fronts and around the jet stream. It is also more common in winter than summer. Continue reading

Category: Phenomena
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