clear-air turbulence

[ kleer-air ]
/ ˈklɪərˈɛər /

noun

atmospheric turbulence, sometimes severe, occurring in air devoid of clouds or other visible indicators that turbulence might be present. Abbreviation: CAT

Origin of clear-air turbulence

First recorded in 1950–55

Words nearby clear-air turbulence

Scientific definitions for clear-air turbulence

clear-air turbulence
[ klîrâr ]

Atmospheric turbulence that occurs under tranquil and cloudless conditions at high altitudes near jet streams, mountain ranges, and developing storm systems. It subjects aircraft to strong updrafts and downdrafts.