Clouds from which Cirrocumulus may form

(Section 2.3.2.5)

Cirrocumulus often forms evolves the:

• Transformation of Cirrus (Cc cirromutatus)
• Transformation of Cirrostratus (Cc cirrostratomutatus)
• Decrease in size of the elements of a patch, sheet or layer of Altocumulus (Cc altocumulomutatus)

Persistent contrails (Ci homogenitus) can, over a period of time and under the influence of strong upper winds, transform into Cirrocumulus (Cc homomutatus).