species of Cirrocumulus
Cirrocumulus composed of very small cumuliform tufts, the lower parts of which are more or less ragged. The apparent width of the tufts is always less than one degree, when observed at an angle of more than 30 degrees above the horizon. As in the case of Cirrocumulus castellanus, the presence of these clouds is an indication of instability at their level. Cirrocumulus floccus sometimes results from the evolution of Cirrocumulus castellanus the base of which has dissipated.