Cirrus castellanus cloud

Cirrus castellanus is a species of cirrus cloud. Its name comes from the word castellanus, which means of a fort, of a castle in Latin.[1] Like all cirrus, this species occurs at high altitudes. It appears as separate turrets rising from a lower-level cloud base. Often these cloud turrets form in lines, and they can be taller than they are wide.[2] This cloud species is usually dense in formation.[3]

Cirrus castellanus
AbbreviationCi cas
GenusCirrus (curl of hair)
Speciescastellanus (castle-shaped)
AltitudeAbove 6,000 m
(Above 20,000 ft)
AppearanceA series of dense lumps, or "towers" of cirrus, connected by a thinner base.
Precipitation cloud?No

See also


  1. Numen - The Latin Lexicon. "Definition of castellanus". Retrieved 11 September 2011.
  2. Dunlop, Storm (2003). The weather identification handbook (1st Lyons Press ed.). Guilford, Conn.: Lyons Press. p. 57. ISBN 1-58574-857-9. Retrieved 11 September 2011.
  3. Callanan, Martin. "Cirrus castellanus". International Cloud Atlas. Retrieved 11 September 2011.

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