Altocumulus
Altocumulus clouds are found in the middle level and are composed of water droplets and some ice crystals. They are small patches/ layers of clouds - known as cloudets - in the shape of rounded lumps, that are separated by patches of blue sky. Altocumulus are distinguished from cirrocumulus clouds by their colour; cirrocumulus are all white, whilst altocumulus have the presence of some grey patches. Occasionally there can be small amounts of precipitation associated with this cloud type.
AltostratusAltostratus are large, mid-level, thin clouds of blue/grey colouring that are usually composed of a mixture of water droplets and ice crystals. This cloud type is generally featureless but covers thousands of miles. In some instances, the cloud may show parallel stripes across it. In thin areas, the sun may be able to be seen shining through, however the sun is unable to cast a shadow.
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