| Cirrostratus fibratus | |
|---|---|
 Cirrostratus fibratus undulatus with faint sun halo | |
| Abbreviation | Cs fib |
| Symbol |  |
| Genus | Cirrus- (curl) -stratus (layered) |
| Species | fibratus (fibered) |
| Altitude | Above 6,000 m (Above 20,000 ft) |
| Classification | Family A (High-level) |
| Appearance | fibrous veils[1] |
| Precipitation | No |
Cirrostratus fibratus or also calledCirrostratus filosus[2] is a type ofcirrostratus cloud. The namecirrostratus fibratus is derived fromLatin, meaning "fibrous".[3] Cirrostratus fibratus is one of the two most common forms that cirrostratus often takes, with the other beingcirrostratus 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 eithercirrus fibratus orcirrus spissatus cloud.[6] Precipitation is often imminent behind these clouds; however, they are not a precipitation-producing cloud.[7]