Cirrus fibratus, also called Cirrus filosus, is a type of
cirrus cloud
Cirrus ( cloud classification symbol: Ci) is a genus of high cloud made of ice crystals. Cirrus clouds typically appear delicate and wispy with white strands. In the Earth's atmosphere, cirrus are usually formed when warm, dry air rises, causing ...
. The name ''cirrus fibratus'' is derived from
Latin
Latin ( or ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally spoken by the Latins (Italic tribe), Latins in Latium (now known as Lazio), the lower Tiber area aroun ...
, meaning "fibrous". These clouds are similar to
cirrus uncinus, commonly known as "mares' tails," yet different in that fibratus clouds do not have tufts or hooks at the end. The filaments are usually separate from one another.
Like other
cirrus cloud
Cirrus ( cloud classification symbol: Ci) is a genus of high cloud made of ice crystals. Cirrus clouds typically appear delicate and wispy with white strands. In the Earth's atmosphere, cirrus are usually formed when warm, dry air rises, causing ...
s, cirrus fibratus occurs at high
altitude
Altitude is a distance measurement, usually in the vertical or "up" direction, between a reference datum (geodesy), datum and a point or object. The exact definition and reference datum varies according to the context (e.g., aviation, geometr ...
s. They can indicate an approaching
warm front
Warm, WARM, or Warmth may refer to:
* A somewhat high temperature; heat
* Kindness
Music Albums
* ''Warm'' (Herb Alpert album), 1969
* ''Warm'' (Jeff Tweedy album), 2018
* ''Warm'' (Johnny Mathis album), 1958, and the title song
* ''Warm'' ( ...
and can also be an indication that fair weather will follow.
See also
*
List of cloud types
The list of cloud types groups all genera as ''high'' (cirro-, cirrus), ''middle'' (alto-), ''multi-level'' (nimbo-, cumulo-, cumulus), and ''low'' (strato-, stratus). These groupings are determined by the altitude level or levels in the troposphe ...
References
External links
International Cloud Atlas - Cirrus fibratus
{{Cloud types
Cirrus