Cirrus fibratus

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Cirrus fibratus
Cirrus front over Austnesfjorden, Austvågøya, Lofoten, Norway, 2015 April.jpg
AbbreviationCi fib
SymbolCH 1.png
GenusCirrus (curl of hair)
Speciesfibratus (fibrous)
AltitudeAbove 6,000 m
(Above 20,000 ft)
Appearancefibers, threads[1]
Precipitation cloud?No

Cirrus fibratus is a type of cirrus cloud. The name cirrus fibratus is derived from Latin, meaning "fibrous".[2] These clouds are similar to cirrus uncinus, commonly known as "mares' tails"; however, fibratus clouds do not have tufts or hooks at the end.[3] The filaments are usually separate from one another.[4]

Like other cirrus clouds, cirrus fibratus occur at high altitudes. They can indicate an approaching warm front;[5] however, they can also be an indication that fair weather will follow.[6]

See also[edit]


  1. ^ Wolken Online. "Cirrus". Cloud Atlas. Retrieved 13 July 2011.
  2. ^ Numen - The Latin Lexicon. "Definition of fibratus, fibratus". Retrieved 13 July 2011.
  3. ^ Dunlop, Storm (2003). The weather identification handbook (1st Lyons Press ed.). Guilford, Conn.: Lyons Press. p. 56. ISBN 1-58574-857-9.
  4. ^ Callanan, Martin. "Cirrus fibratus". International Cloud Atlas. Retrieved 13 July 2011.
  5. ^ Wolstanton Weather. "Cumulus Clouds". Clouds. Archived from the original on 27 March 2012. Retrieved 13 July 2011.
  6. ^ The Weather Observer. "Cirrus Fibratus (Ci fib)". Archived from the original on 27 March 2012. Retrieved 13 July 2011.

External links[edit]

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