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Cumulus congestus or towering cumulus clouds are a species of cumulus that can be based in the low- to middle-height ranges. They achieve considerable vertical development in areas of deep, moist convection. They are an intermediate stage between cumulus mediocris and cumulonimbus, sometimes producing rainshowers, snow, or ice pellets. [2]
Cumulonimbus (from Latin cumulus 'swell' and nimbus 'cloud') is a dense, towering, vertical cloud, [1] typically forming from water vapor condensing in the lower troposphere that builds upward carried by powerful buoyant air currents.
Cumulus tuba (WMO genus and supplementary feature) – column hanging from the bottom of cumulus. Cumulonimbus (WMO genus) – heaped towering rain-bearing clouds that stretch to the upper levels of the troposphere. Cumulonimbus calvus (WMO genus and species) – cumulonimbus with round tops like cumulus congestus.
Cumulus congestus clouds have a cauliflower-like structure and tower high into the atmosphere, hence their alternate name "towering cumulus". [23] The variety Cumulus radiatus forms in radial bands called cloud streets and can comprise any of the four species of cumulus. [24]
Instead, they form under cumulonimbus or towering cumulus clouds, according to the National Oceanic and Atmospheric Administration. This limits the energy available to the landspout, so they are ...
Towering cumulus (species congestus), and cumulonimbus may form anywhere from near the surface to intermediate heights of around 3 kilometres. Of the vertically developed clouds, the cumulonimbus type is the tallest and can virtually span the entire troposphere from a few hundred metres above the ground up to the tropopause. [33]
Cumulus congestus clouds in the foreground. Species Abbreviation Description Genera Calvus: cal: Tops of clouds lose hard, rough appearance and become smooth: Cb ...
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