Altocumulus castellanus An altocumulus showing vertical development, individual cloud elements have towerlike tops, often in the shape of tiny castles.
altocumulus castellanus—A species of middle cloud of which at least a fraction of its upper part presents some vertically developed, ...
ALTOCUMULUS CASTELLANUS
A middle cloud with vertical development that forms from altocumulus clouds. It is composed primarily of ice crystals in its higher portions and characterized by its turrets, protuberances, or crenelated tops.
Altocumulus Castellanus (ACCAS) They are middle level convective clouds and possibly they should be classified as clouds with extensive vertical development. They are composed of mainly water vapor.
ACCAS - AltoCumulus CAStellanus. A variant of altocumulus that forms in unstable environments where the height of each cloud element is about the same as its width.
It may form several sub-types, such as altocumulus castellanus or altocumulus lenticularis Virga may also fall from these clouds. ALTOCUMULUS CASTELLANUS A middle cloud with vertical development that forms from altocumulus clouds.
(usually pronounced ACK-kis) - AltoCumulus CAStellanus; mid-level clouds (bases generally 8 to 15 thousand feet), of which at least a fraction of their upper parts show cumulus-type development.
Cumulonibus (Cb), towering cumulus clouds, and Altocumulus Castellanus (ACCAS) clouds all are visible forms of convection. However, convection is not always made visible by clouds.
Cirrocumulus floccus sometimes evolves as the result of the dissipation of the common base of cirrocumulus castellanus; in like manner, altocumulus floccus may evolve from altocumulus castellanus.
 See also: Cumulus, Altocumulus, Cloud, Meteor, Wind
  
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