Clouds
Clouds are divided into four families.
High Clouds, Includes cirriform, and includes cirrus, cirrocumulus, and cirrostratus. They are almost entirely composed of ice crystals.
High clouds begin at 20 000 feet AGL, they are normally white to light gray, and form in stable air.
They consists of ice crystals, and rarely pose a serious turbulence or icing hazard.
Middle Clouds , the range of middle clouds are from 6500 feet AGL to 20 000 feet AGL.
The Middle clouds are composed of water, ice crystals, or supercooled water. They can contain moderate turbulence, and also potential icing hazards.
Altostratus and altocumulus are middle clouds.
Low Clouds From surface up to 6500 feet AGL, low clouds almost entirely consists of water.
But may contain supercooled, water which can create serious icing hazards to aircrafts.
The different types of low clouds are Stratus, Stratocumulus, and Nimbostratus.
Cloud with extensive vertical development, Cumulus, clouds, Towering Cumulus, Cumulonimbus Clouds.
Cumulus clouds are puffy clouds with flat bases, that starts at 2000-8000 feet and with tops that extends well up into the levels off high clouds.
They pose a serious threat to all aircrafts, with heavy turbulence, and serious threats of hail and other types of precipitation.
Cumulonimbus are also called thunderstorm, are large vertically developed clouds.
They are formed in moist, and unstable air, and with a lifting action of the air.
