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They can be as little as 100 m (330 ft) from top to bottom to as thick as 8,000 m (26,000 ft). Cirrus cloud thickness is usually somewhere between those two extremes, with an average thickness of 1,500 m (4,900 ft). [23] The jet stream, a high-level wind band, can stretch cirrus clouds long enough to cross continents. [24]
Cirrus spissatus (V-3) Cirrus fibratus radiatus (V-8) Cirrus uncinus (V-2) Cirrus fibratus (V-1) High clouds having the traditional "mare's tail" appearance. These clouds are long, fibrous, and curved, with no tufts or curls at the ends. Cirrus uncinus (V-2) Filaments with up-turned hooks or curls. Cirrus spissatus (V-3)
Cirrus radiatus is a variety of cirrus cloud. The name cirrus radiatus is derived from Latin , meaning "rayed, striped". [ 1 ] This variety of cirrus clouds occurs in parallel bands that often cover the entire sky and appear to converge at a single point [ 2 ] or two opposite points on the horizon.
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Cirrus spissatus or also called Cirrus densus and Cirrus nothus [1] clouds are the highest of the main cloud genera, and may sometimes even occur in the lower stratosphere. The characteristic features of cirrus clouds are fine threads or wisps of ice crystals , generally white, but appearing grey when dense and seen against the light.
There will be high cirrus clouds, which are thin, wispy, transparent and tissue-paper-like, along much of the eclipse path Monday. The good news is that high cirrus clouds are not enough to ...
Although the altitudes near the tropopause are usually cloudless, thin cirrus cloud can form where there are abrupt changes of air velocity, for example associated with jet streams. Lines of cirrus perpendicular to the jet stream indicate possible CAT, especially if the ends of the cirrus are dispersed, in which case the direction of dispersal ...
They are produced by the ice crystals in cirrus or cirrostratus clouds high in the upper troposphere, at an altitude of 5 kilometres (3.1 mi) to 10 kilometres (6.2 mi), or, during very cold weather, by ice crystals called diamond dust drifting in the air at low levels.