SGH-A2 Clouds
Cumulus | Cirrus | Sundog | Nimbostratus | Cumulonimbus

Cirrus (Ci)

Cirrus clouds are snow white, thin and wispy clouds composed almost entirely of ice crystals. Cirrus clouds form high in the Earth's atmosphere where the temperature is usually well below freezing. Cirroform clouds produce a variety of optical phenomena, such as sundogs....
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