Science Fair Project Encyclopedia
Altostratus is a cloud belonging to a class characterized by a generally uniform gray sheet or layer, lighter in color than nimbostratus and darker than cirrostratus. Compare also with lower altitude stratus clouds.
|Photo of Altostratus|
|Where found:||2,000-5,000 m|
|Associated Weather:||Wide areas of rain and snow.|
Altostratus is caused by a large air mass that is lifted then condensed, usually by an incoming frontal system .
Altostratus clouds are potentially dangerous, because they can cause ice accretion on aircraft.
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