Flattened, wider than it is tall. Medium height, tall as it is wide. Cumulus Cloud Varieties. Cumulus clouds have only one associated variety: radiatus. Parallel bands and strips. Cumulus Cloud Supplementary Features. Shelf cloud, gust collar. Kelvin-Helmholtz waves, curls. Precipitation reaching the surface. Funnel cloud, tornado. Evaporating rain strips. Ragged frazzles, scud.
Cap or hood over a cumuliform. Horizontal cloud veil. Waterfall condensation and spray. Pyrocumulus, caused from fire. Caused by human activity. Similar Cloud Types. Lightning, thunder, and even violent tornadoes are associated with the cumulonimbus.
Here are some examples of cumulonimbus clouds:. Back to Cloud Types. Cumulus Clouds Cumulus clouds are puffy clouds that sometimes look like pieces of floating cotton. What weather is associated with cumulonimbus clouds?
How do we categorise cumulonimbus clouds? Cumulonimbus clouds have 3 distinct 'species' which describe the appearance of the head of the cloud: Cumulonimbus calvus - the top of the cumulonimbus is puffy, like a cumulus cloud. The water droplets at the top of the cloud tower have not frozen to become ice crystals. Cumulonimbus capillatus - the top of the cloud is fibrous but relatively contained. Water droplets have started to freeze, usually indicating rain has begun or will begin soon.
Cumulonimbus incus - the top of the cloud is fibrous and anvil-shaped, as the cloud has continued to grow. If the cloud reaches the top of the troposphere and still wishes to grow, it must do so outwards, creating the picturesque anvil or 'incus'.
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