METEOROLOGIST JEFF HABYThis webpage defines the various cloud varieties and defines how castle form. Cloud terms room in alphabetical order.Accessory cloud- A cloud that is dependent upon a larger cloud system for existence. Anvil clouds, wall clouds, and funnel clouds are instances of accessory clouds. Altocumulus- center level cumulus clouds. They are composed of liquid drops and have patches of clouds i ordered it in consistent patterns.Altostratus- center level stratus clouds. They often tend to be also high and also thin to produce significant precipitation but they deserve to overcast the sky and produce light precipitation.Anvil- Anvils space the ice decision clouds swollen downwind indigenous the top of a cumulonimbus thunderstorm clouds.Cirrus- The basic term because that high clouds written of ice crystals. They have a feathery and wispy appearance.Cirrocumulus- Patches within cirrus clouds that provide the appearance of the mackerel sky. The spot are frequently arranged in a continual pattern.Cirrostratus- High clouds composed of ice crystal stratus. The sunlight will often shine through them. Halos and sun dogs deserve to be developed as the sun shines with cirrostratus.Comma cloud- A low press cyclone will frequently have the figure of a comma on satellite imagery. The low pressure center and also warm front make up the head that the comma if the cold front makes up the tail. Cumulonimbus- A thunderstorm cloud that encompasses the lower, middle and upper level of the troposphere. They kind by a deep class of increasing positively buoyant wait in the troposphere.Cumulus- The basic term because that vertically occurring clouds. They have actually a lumpy appearance and also develop within an turbulent layer in i beg your pardon the cloud can construct due to confident buoyancy.Fair Weather Cumulus- A cumulus cloud that establishes in a shallow depth of unstable air. Steady air above the shallow class of stormy air borders the expansion of these clouds. The lack of deep vertical breakthrough prevents them from gift precipitation producers.Fog- Fog is a cloud that has actually the basic on the earth"s surface.Fractus- Fractus are also known together scud and cloud tags. They space isolated short level stratus clouds the can often be seen about the basic of thunderstorms. They regularly look unorganized and flow v the low level wind.Funnel cloud- The cloud developed from condensation indigenous a rotating column of air. The funnel cloud is the visible part of a tornado developed from clouds. A funnel cloud is not a tornado if the circulation is not in call with the ground. Lenticular- Lenticular clouds room clouds that kind above hills that have actually a lens and also flying saucer shape. They form as wait is lifted come saturation end the height of mountains. Mackeral Sky- Cirrocumulus that look favor fish scales.Mammatus- Mammatus room pouched shaped clouds that protrude bottom from the thunderstorm"s anvil. They type as negatively buoyant moisture laden wait sinks. The cloud continues to be visible until the air sinks sufficient that the loved one humidity falls listed below 100%. The part that has a loved one humidity the 100% remains visible. Mammatus tend to it is in most significant in incredibly severe storms however can occur when storms space not significant also.Mare"s Tail- A term used to define wispy cirrus. The cirrus deserve to look choose a horse"s tail in the wind.Nimbostratus- A precipitation producing stratus cloud. They build due to forced wide scale lifting of saturation air and also can cover good distances. Many non-thunderstorm precipitation is developed by nimbostratus.Noctilucent cloud- incredibly cold clouds v very tiny amounts of tiny ice cream crystals. These clouds are situated 75 come 90 kilometers above the surface and also are seldom seen as result of their incredibly low humidity density. They are finest seen once the sun mirrors radiation off them once the sun is below the horizon prior to it rises and after that sets. Lock are likewise best seen at greater latitudes. The can variety in shade from blues to orange and red.Rope cloud- A rope-like band of clouds on satellite imagery frequently along cold fronts or other boundaries.Shelf cloud- A low ominous cloud reaching throughout the sky in associated with thunderstorm outflow.Stratiform / Stratus- The general term for horizontal clouds that build due to required uplift. They have a flat appearance and also develop within a stable layer.Stratocumulus- A short level stratus cloud the has distinct clumps. Castle look prefer a mix of small fair weather cumulus and a low level stratus deck.Uncinus- They are hooked shame cirrus clouds and also are also called mare"s tails.Wall cloud- A lower cloud basic within the updraft region of a supercell thunderstorm. The fast lifting that humid air causes the cloud basic to form at a reduced elevation.

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Wall clouds will frequently rotate cyclonically.