CH8 Cs not invading or covering the sky

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Gallery
eg1
© C.S. Broomfield
(Crown copyright)
eg1
© C.S. Broomfield
(Crown copyright)
eg2
© R.K. Pilsbury
 

The sky corresponding to CH 8 is characterised by the presence of a veil of cirrostratus which is not (or no longer) invading the sky progressively and which does not completely cover it. The photograph at top right was taken one and a half hours after the one on the left. The edge of the veil may be clear-cut or frayed.

The code figure CH =8 is also used when cirrostratus occurs in patches whether they increase in amount or not (bottom photograph).

Cirrus and cirrocumulus may also be present, but should not predominate over the cirrostratus.

Classification
Description:
Cirrostratus not progressively invading the sky and not completely covering the celestial dome.
Designation:
CH=8 (C2)
Latin name:
Cirrostratus nebulosus (Cs neb) or Cirrostratus fibratus (Cs fib).

Related pages: Cloud classification | CL guide | CM guide | CH guide | Cloud index