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Pictorial guide CL: Sc-St-Cu-Cb

Click a picture for a full description and more examples of the cloud type

Guide overview image

Cb, with clearly fibrous or striated upper part present Cb, without clearly fibrous or striated uppper part present Cu and Sc with bases at different levels Cu of little vertical extent, or ragged Cu other than of bad weather, or both Sc not formed by the spreading out of Cu Sc, formed by the spreading out of Cu, present Cu of moderate or great vertical extent present St, or ragged St other than of bad weather, or both Ragged St or ragged Cu, of bad weather or both

To find the correct code figure from the pictorial guide:

  • Select the appropriate flow chart (Cb present or No Cb)
  • Follow the heavy bold line through the sequence of rectangular description boxes, until the criteria are not satisfied.
  • When an incorrect desciption is reached, return to the previous box and then follow the non-bold line to reach the appropriate thumbnail image. This will provide the correct code figure.


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




Cb, with clearly fibrous or striated upper part present Cb, without clearly fibrous or striated uppper part present Cu and Sc with bases at different levelsCu of little vertical extent, or ragged Cu other than of bad weather, or both Sc not formed by the spreading out of Cu Sc, formed by the spreading out of Cu, present Cu of moderate or great vertical extent present St, or ragged St other than of bad weather, or both Ragged St or ragged Cu, of bad weather or both