Meteorology
Cumulonimbus
At a glance
Meaning of Cumulonimbus
A towering thunderstorm cloud associated with strong air movements, precipitation and possible turbulence.
More about Cumulonimbus
Cumulonimbus clouds can contain strong updraughts and downdraughts, lightning, hail and icing conditions.
Their visible outline does not describe the full extent of associated hazards. Flight crews assess current weather information and follow their procedures when planning avoidance.