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Stratus clouds are low-level clouds characterized by horizontal layering with a uniform base, as opposed to convective or cumuliform clouds formed by rising thermals. The term stratus describes flat, hazy, featureless clouds at low altitudes varying in color from dark gray to nearly white. [2] The word stratus comes from the Latin prefix strato ...
The list of cloud types groups all genera as high (cirro-, cirrus), middle (alto-), multi-level (nimbo-, cumulo-, cumulus), and low (strato-, stratus). These groupings are determined by the altitude level or levels in the troposphere at which each of the various cloud types is normally found. Small cumulus are commonly grouped with the low ...
Nimbostratus ( rain, layered) Altitude. 500–5,500 m. (2,000–18,000 ft) Appearance. Dark and featureless layer cloud full of water vapor; responsible for rain and snow. Precipitation. Yes: rain, ice pellets, or snow; sometimes virga. A nimbostratus cloud is a multilevel, amorphous, nearly uniform, and often dark-grey cloud that usually ...
Stratocumulus clouds are the main type of cloud that can produce crepuscular rays. Thin stratocumulus clouds are also often the cause of corona effects around the Moon at night. All stratocumulus subtypes are coded C L 5 except when formed from free convective mother clouds (C L 4) or when formed separately from co-existing (C L 8).
Altostratus cloud. Altostratus is a middle-altitude cloud genus made up of water droplets, ice crystals, or a mixture of the two. Altostratus clouds are formed when large masses of warm, moist air rise, causing water vapor to condense. Altostratus clouds are usually gray or blueish featureless sheets, although some variants have wavy or banded ...
Polar stratospheric clouds ( PSCs) are clouds in the winter polar stratosphere at altitudes of 15,000–25,000 m (49,000–82,000 ft). They are best observed during civil twilight, when the Sun is between 1 and 6 degrees below the horizon, as well as in winter and in more northerly latitudes. [1] One main type of PSC is made up mostly of ...
Stratus nebulosus is a species of low-level stratus cloud . It is one of only two species that is associated with stratus clouds, other being fractus. Translated from Latin meaning nebulous, their cloud abbreviations can be respectively written as ‘St neb’. For a cloud to be classified as nebulosus, there has to be zero sign of detail in ...
Stratocumulus volutus is a rare species of stratocumulus cloud, typically forming alone. [1] Volutus is translated from Latin, meaning revolve, being described as a roll cloud. [2] [3] Stratocumulus volutus clouds are low-level clouds, forming below 2,000 meters (6,600 feet). Volutus clouds are much more common in the form of stratocumulus, as ...