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* * High Clouds 18,000 to 30, ...
high clouds - See cloud classification.
horizon - One of several lines or planes used as reference for observation and measurement relative to a given location on the surface of the earth, and referred generally to a horizontal direction (i.e.
High clouds - cirrus, cirrostratus, cirrocumulus
Middle clouds - altostratus, altocumulus
Low clouds - nimbostratus, stratocumulus, stratus
Clouds with vertical development - cumulus, cumulonimbus.
HIGH CLOUDS
A term used to signify cirriform clouds that are composed of ice crystals and generally have bases above 20,000 feet. The main types of high clouds are cirrus,cirrocumulus, and cirrostratus. This altitude applies to the temperate zone.
High Clouds These clouds have bases between 16,500 and 45,000 feet in the mid latitudes. At this level they are composed of primarily of ice crystals. Some clouds at this level are cirrus, cirrocumulus, and cirrostratus.
high clouds: clouds found between 3-8 kilometers (10000-25000 feet) in polar regions and 6-18 kilometers (20000-60000 feet) in tropical regions. Contains cirriform clouds (cirrus, cirrocumulus, and cirrostratus).
High clouds (Family A)
These generally form above 16,500 feet (5,000 m), in the cold region of the troposphere. However, in Polar regions they may form as low as 10,000 ft (3,048 m). They are denoted by the prefix cirro- or cirrus.
High clouds are primarily composed of ice crystals; Medium clouds are a mixture of water droplets (usually super-cooled) and ice crystals, in varying proportion, and low clouds primarily water droplets, ...
Cirrus - High clouds, usually above 18,000 feet, composed of ice crystals and appearing in the form of white, delicate filaments or white or mostly white patches or narrow bands.
Clear - Sky condition of less than 1/10 cloud coverage.
CIRRUS: High clouds, usually above 18,000 feet, composed of ice crystals.
CLEAR: Sky condition of less than 1/10 cloud coverage.
CLIMATE: The historical record of average daily and seasonal weather events.
Cirrus (Ci): High clouds composed of ice-crystals that are whitish in color and can appear as filaments, patches or narrow bands.
These clouds generally have bases above 20,000 feet in the mid-latitudes, and are classified as high clouds. They include all varieties of cirrus, cirrocumulus, and cirrostratus clouds.
High clouds are very cold, so they appear white. Mid-level clouds are somewhat warmer, so they will be a light gray shade. Low cloud are warmer still, so they appear as a dark shade of gray or black.
Cirriform clouds are high clouds (see cloud classification) existing between −25° and −85°C.
CIRRUS (CI) - High clouds, usually above 18,000 feet, composed of ice crystals.
CLASSIC EVENT- Having all the ingredients for a specific type of weather (i.e. classic severe weather event, classic Nor'easter) ...
Pieces of ice that sometimes form in high clouds
High Pressure
A mass of air that presses down strongly on the surface of the Earth because it is being cooled and is therefore more dense ...
Virga- Water droplets or ice crystals that fall from high clouds but that evaporate before hitting the ground.
Warm Front- The leading edge of a mass of warmer air that displaces a mass of colder air.
High clouds form above 20,000 feet in the cold region of the troposphere, and are denoted by the prefix CIRRO or CIRRUS. At this altitude water almost always freezes so clouds are composed of ice crystals.
The rippled effect gives the appearance of fish scales.
NOAA National Weather Service - Cite This Source - This Definition
Browse Related Terms: CI, Cirrus, High Clouds, Mare's Trail, Middle Clouds, molecule, Undersun ...
JET STREAK - A strong and narrow stream of very high velocity winds in a jet stream. Called so because this region often is marked by high clouds in a narrow fast moving band as viewed on a satellite loop. See also JETMAX.
dispersed, this usually results in relative transparency and whiteness, often producing a halo phenomena not observed in other clouds forms. These clouds generally have bases above 20,000 feet in the mid-latitudes, and are classified as high clouds.
high clouds
cirrus (wispy, "mare's tails")
cirrostratus (high altitude flat, layerd cloud)
a large halo closely circles the sun or moon shining through cirrostratus
cirrocumulus (high altitude puffy clouds) ...
Each instrument allows the observer to determine the compass direction in which clouds are moving. Cloud motions may vary with elevation; that is, low clouds may be moving in one direction and high clouds moving in another.
In cases where you have a system snow transitioning to a pure lake effect snow, the criteria for defining this transition is when the mid and high clouds have been stripped away leaving only the stratocumulus clouds behind.
 See also: Cloud, Clouds, High, Water, Air
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