Cirrus uncinus form at high altitude and at low temperature, about minus 40 to 50 degrees Celsius. They have the shape of white stripes that get the aspect of comma because of the lack of wind. Sometimes they are mixed in the sky with other types of clouds like cumulus. There are images of the sky coloured by the sunset with orange, yellow, blue, pink reflections.
Category:high level clouds photo. cirrus uncinus 3 stars (9 votes)
Download:The photos are part of Cepolina photo collection.
keys:cirrus uncinus, high altitude, low temperature, minus 40 degrees, white stripes, wind lack, mixed clouds, cumulus, sunset clouds, orange clouds, yellow clouds, blue reflections, pink reflectionscirrus uncinus.