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These are made when the cloud takes the form of thin cirrostratus nebulosus. [1] The cloud has a fibrous texture with no halos if it is thicker cirrostratus fibratus. On the approach of a frontal system, the cirrostratus often begins as nebulous and turns to fibratus. If the cirrostratus begins as fragmented of clouds in the sky it often means ...
Cirrostratus nebulosus is one of the two most common forms that cirrostratus often takes, with the other being cirrostratus fibratus. The nebulosus species is featureless and uniform, while the fibratus species has a fibrous appearance. [3] Cirrostratus nebulosus are formed by gently rising air. The cloud is often hard to see unless the sun ...
Clouds of the genus nimbostratus tend to bring constant precipitation and low visibility. This cloud type normally forms above 2 kilometres (6,600 ft) [10] from altostratus cloud but tends to thicken into the lower levels during the occurrence of precipitation. The top of a nimbostratus deck is usually in the middle level of the troposphere.
Cirrostratus cloud. Cirrostratus clouds can appear as a milky sheen in the sky [72] or as a striated sheet. [67] They are sometimes similar to altostratus and are distinguishable from the latter because the Sun or Moon is always clearly visible through transparent cirrostratus, in contrast to altostratus which tends to be opaque or translucent ...
Cirrostratus fibratus is one of the two most common forms that cirrostratus often takes, with the other being cirrostratus nebulosus. [4] They are formed from strong, continuous winds blowing at high altitudes, and they often cover a large portion of the sky. [5] Cirrostratus fibratus may often develop from either cirrus fibratus or cirrus ...
A circumhorizontal arc is an optical phenomenon that belongs to the family of ice halos formed by the refraction of sunlight or moonlight in plate-shaped ice crystals suspended in the atmosphere, typically in actual cirrus or cirrostratus clouds. In its full form, the arc has the appearance of a large, brightly spectrum-coloured band (red being ...
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.
Cirrostratus clouds, a very high ice-crystal form of stratiform clouds, can appear as a milky sheen in the sky [8] or as a striated sheet. [9] They are sometimes similar to altostratus and are distinguishable from the latter because the Sun or Moon is always clearly visible through transparent cirrostratus, in contrast to altostratus which ...