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Cloud Types

Chapter 11, Section 3

Clouds are classified according to their height above and appearance (texture) from the ground.                  

• The following terms are used (and can be combined) to classify clouds.

• 1) Cirro-a high level cloud, means wispy (always used first, when combined)

• 2) Alto- a mid level cloud (always used first, when combined)

• 3) Stratus-means layer (used alone, as a low level cloud, or used second if it is a cirrostratus or altostratus)

• 4) Nimbo-means precipitation is coming from that cloud (nimbus if it comes second in the combination, like cumulonimbus)

• 5) Cumulo-means heap, or kind-of like cotton balls (cumulus if it comes second in the combination, like altocumulus)

Cirrus

• Thin, wispy clouds. These clouds are formed by ice crystals because they are so high up.

Cirrostratus

• Very thin sheets of clouds that cover large parts of the sky.

Cirrocumulus

• Clouds that are very high up, but look a little puffy. They may look similar to fish scales.

Altocumulus

• Mid-level cloud, kind of gray and puffy. Common on hot, humid summer days. Usually a sign that thunderstorms will follow later in the day.

Altostratus

• Covers the entire (or most) of the sky. Can form before rain storms.

Stratus

• Low-lying, gray clouds that cover all or nearly all of the sky.

Nimbostratus

• Dark gray clouds that produce falling rain or snow.

Cumulus

• Fair weather clouds, that look like floating cotton balls.

Cumulonimbus

• Very tall, puffy, thunderstorm clouds. Produce rain, lightning, hail, and/or tornadoes.

There are a few more cloud types that are RARE, like contrails or

lenticular clouds• If interested in

those rare types, please do a google image search on your own…


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