Cumulus cloud
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Cumulus clouds are clouds that have flat bases and are often described as puffy, cotton-like, or fluffy in appearance. Their name derives from the Latin cumulus, meaning "heap" or "pile". Cumulus clou
Small cumulus humilis clouds that can have noticeable vertical development and clearly defined edges.
Lines of cumulus clouds over Brittany, France
Cumulus mediocris clouds over Sweden
Cumulus congestus clouds compared against a cumulonimbus cloud in the background
Cumulonimbus cloud
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Cumulonimbus is a dense, towering, vertical cloud, typically forming from water vapor condensing in the lower troposphere that builds upward carried by powerful buoyant air currents. Above the lower p
Cumulus cloud
…congestus form. Cumulus clouds may appear by themselves, in lines, or in clusters. Cumulus clouds are often precursors of other types of clouds, such as cumulonimbus, when influenced by weather factors such as instability, humidity, and temperature gradient. Normally, cumulus clouds produce little or no precipitation…
Cumulonimbus incus over Warsaw, Poland
A cumulonimbus calvus over El Bajío, Guanajuato, Mexico.
Cumulonimbus calvus
A clearly developed cumulonimbus fibrous-edged top capillatus