[1] It also may exhibit small protuberances from the top and may show the cauliflower form characteristic of cumulus clouds.

Cumulus mediocris is also classified as a low cloud and is coded CL2 by the World Meteorological Organization.

A single pattern-based variety, Cumulus radiatus, is sometimes seen when the individual clouds are arranged into parallel rows.

These clouds are common in the advance of a cold front or in unstable atmospheric conditions such as an area of low pressure.

As the air pockets float upwards, they cool, eventually reaching their dew point and condensing, forming Cumulus humilis clouds.