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Cloud Formations


Cumulonimbus is a heavy and also dense cloud of considerable vertical extent in the form of a hill or substantial tower, often associated with hefty precipitation, lightning and also thunder. The maturation Cumulonimbus cloud has a distinctive flat, anvil shame top.

You are watching: The conditions necessary for the formation of cumulonimbus clouds are a lifting action and


The Cumulonimbus cloud (Cb) develops when three conditions are met:

There need to be a deep class of stormy air.The air have to be warm and moist.A cause mechanism must reason the heat moist air come rise:Heating the the great of air close come the surface.Rising floor forcing the air upwards (orographic uplift).A front forcing the wait upwards.

The method in i m sorry a Cb creates is extended in a different article: Lifecycle that the Thunderstorm.


Cumulonimbus cloud in central Oklahoma. The updraft is the large cloud mass at the facility of the photo. The anvil is the flat layer in ~ the top. The downdraft is the rainy area come the right.

Types that Cumulonimbus

Mass Ascent
. Resulted in when a weather front pressures the waiting upwards. Just like orographic lift, the Cb cells form in a line follow me the front, frequently embedded within wider frontal cloud, thus presenting a an obstacle to aircraft trying to navigate through the front.



Flight right into a Cb is highly dangerous. The only cautious defence versus the hazards linked with a Cb is as such to prevent flying into one in the first place.

Awareness. Awareness the the conditions which lead to the formation of a Cb, recognition of a developing and also mature Cb, and awareness that the indications which indicate the proximity of a Cb will help controllers and flight crews to plan operations to protect against the connected hazards.

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If the Cb cabinet is positioned over the destination aerodrome, then the pilot would certainly be well advised to host off or draw away rather than attempt a landing.