Cirrus Clouds thin and wispy
The most common form of high-level clouds are thin and often wispy cirrus clouds.
Cirrus cloud
High cloud, delicate, hair-like and feathery looking.
Climate ...
Cirrus cloud (Ci) A high thin cloud occurring as silky strands and composed of ice crystals.
Cirrus Clouds - Thin, wispy clouds that form high in the atmosphere as their water vapor freezes into ice crystals. Cirrus clouds are a principle cloud type.
Clear Sky - When the sky has no clouds.
Cirrus clouds- High-level clouds (16,000 feet or higher), composed of ice crystals and appearing in the form of white, delicate filaments or white or mostly white patches or narrow bands.
Picture of Cirrus clouds at about 20,000 feet, also a contrail over our home.
Cirrocumulus - Cirrus clouds with vertical development.
Cirrostratus - Cirrus clouds with a flat sheetlike appearance.
MARE'S TAIL The name given to thin, wispy cirrus clouds composed of ice crystals that appear as veil patches or strands, often resembling a horse's tail.
A moon dog is a brightening in the clouds caused by the refraction of moonlight in high-atmosphere cirrus clouds. It can appear on either the left or the right of the moon, approximately 22 degrees away.
High-level cirrus clouds are often thin and wispy, allowing a considerable amount of sunlight to penetrate them, sufficient to produce shadows.
Cirrus clouds typically have a fibrous or hairlike appearance, and often are semi-transparent. Thunderstorm anvils are a form of cirrus cloud, but most cirrus clouds are not associated with thunderstorms.
CIRROCUMULUS: A principal cloud type featuring cirrus clouds with vertical development.
CIRROSTRATUS: A principal cloud type featuring cirrus clouds with a flat or sheet-like appearance.
CLEAR: Sky condition with less than 1/10 cloud coverage.
The ring of light that seems to encircle the sun or moon when veiled by cirrus clouds. To produce this phenomena, the ice crystals must be in a heterogeneous arrangement to refract the sunlight.
Ci- abbreviation for cirrus clouds
CIN (Convective INhibition) - a measure of the amount of energy needed to initiate convection; values of CIN typically reflect the strength of the cap ...
Cirrus clouds are common around low pressure systems where abundant moisture exists at high altitudes or after convective clouds dissipate at these levels.
CDO - Central Dense Overcast. The cirrus cloud shield that results from thunderstorms in the eye wall of a hurricane and its rainbands.
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Cirrus (Ci) They are thin, feather like clouds composed entirely of ice crystals. They form at altitudes between 16,500 to 45,000 feet above ground. Thunderstorm anvils are a form of cirrus cloud, ...
They appear in shapes and patterns similar to cirrus clouds, but they are much higher, 45 to 55 miles above the Earth's surface in the mesosphere, where temperatures range below -100 degrees F.
mares' tails"Long, well-defined wisps of cirrus clouds, thicker at one end than the other.
Marfa front"See dryline.
FRACTUS The elements of cumulus and stratus clouds that appear in irregular fragments, as if they had been shred or torn. Never appears in cirrus clouds. Also known as scud. Related terms: cumulus fractus and stratus fractus ...
Halos: Rings or arcs that encircle the sun or moon. These are caused by refraction of light through ice crystals that make up cirrus clouds.
halo: a ring of light that appears to encircle the sun or moon. This occurs when the light from the sun or moon shines through cirrus clouds.
Halos- rings or arcs that seem to encircle the sun or moon and are the result of the refraction of light through the ice ctystals that make up cirrus clouds.
Halo Group of optical phenomena, in the form of rings, arcs, pillars or bright spots around the Sun or Moon, produced by the refraction or reflection of light by ice crystals suspended in the atmosphere (Cirrus clouds, diamond dust, etc.) ...
CUMULUS FRACTUS Cumulus clouds that appear in irregular fragments, as if they had been shred or torn. Also appears in stratus clouds (called stratus fractus), but not in cirrus clouds.
The crystals falling from cirrus clouds will all have the same orientation, facilitating the creation of halos, which are the cooperative effect of many crystals (as the rainbow is of many drops).
more than one cirrus cloud is cirrus, not cirri.) 2. A scheme of classifying clouds according to their usual altitudes. Three classes are distinguished: high, middle, and low.
The phenomenon is usually observed in thin cirrus clouds within about 30° of the sun and is characterized by bands of color in the cloud that contour the cloud edges.
 See also: Cirrus, Cloud, Clouds, Ice Crystals, Water
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