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Cirrus Clouds
thin and wispy
The most common form of high-level clouds are thin and often wispy
cirrus clouds. Typically found at heights greater than 20,000 feet
(6,000 meters), cirrus clouds
are composed of ice crystals that originate
from the freezing of
supercooled water
droplets.
Cirrus generally occur in fair weather
and point in the direction of air movement at their elevation.
[Image: more cirrus clouds (76K)]
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![[Image: more cirrus clouds (76K)]](/guides/mtr/cld/cldtyp/hgh/gifs/crs2.gif){kind=link}