Cirrus intortus cloud

Cirrus intortus is a variety of cirrus cloud. The name cirrus intortus is derived from Latin, meaning "twisted, wound".[2] The variety of intortus clouds is specific to cirrus clouds, and they appear as interwound strands of cirrus clouds with a purely random pattern.[3] The filaments are often curved in a very irregular pattern.[4]

Cirrus intortus
AbbreviationCi in
GenusCirrus (curl of hair)
Varietyintortus (interlaced)
AltitudeAbove 5,000 m
(Above 16,500 ft)
Appearancetangled, interlaced[1]
Precipitation cloud?No

Like other cirrus clouds, cirrus intortus occur at high altitudes.[5]

See also


  1. Wolken Online. "Cirrus". Cloud Atlas. Retrieved 13 July 2011.
  2. Numen - The Latin Lexicon. "Definition of intortus". Retrieved 13 July 2011.
  3. Dunlop, Storm (2003). The weather identification handbook (1st Lyons Press ed.). Guilford, Conn.: Lyons Press. p. 58. ISBN 1-58574-857-9.
  4. Callanan, Martin. "Cirrus intortus". International Cloud Atlas. Retrieved 13 July 2011.
  5. The Weather Observer. "Cirrus intortus (Ci in)". Archived from the original on 27 March 2012. Retrieved 13 July 2011.

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