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Cirrus uncinus over San Bernardino, California, US
Contrails and cirrus uncinus amidst a colorful sky over Taichung City, Taiwan
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Circumhorizon Arc along with virga in the distance, spotted while driving on I-90 in Montana, US
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A grand display of virga, following a day that Martha described as being filled with cirrus uncinus, spotted over Asheville, North Carolina, US
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Sunset over Aratsu Beach as the sun appears from the clouds, spotted near Aratsu, Fukuoka City, Japan
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Cirrus uncinus and fibratus, which can often be seen in the same view of the sky, as spotted here over Kasuga City, Fukuoka Prefecture, Japan
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Cirrus spissatus, which is a thick cirrus cloud, is often accompanied by other species of cirrus clouds within close proximation. These clouds can be formed by a conglomerate of cirrus clouds at high altitudes, and separate from that origin, they can also form from the remnants of a dissipating thunderstorm that once had a fibrous top. This example of cirrus spissatus was spotted over Thumrait, Southern Oman, near the Yemeni border.
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Cirrus uncinus over Charlotte, Michigan, US
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Cirrus uncinus amidst a mixed sky over Greenfield, California, US
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Cirrus uncinus, which Janis described as "daytime shooting stars", spotted over Placerville, California, US
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A variety of clouds, including cirrus uncinus, undulatus, and altocumulus stratiformis, spotted over Poipu, Kauai, Hawaii, US
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Cirrus uncinus over Sanxia District, New Taipei City, Taiwan
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Cirrus uncinus over Sanxia, New Taipei City, Taiwan
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Cirrus uncinus high above a multitude of clouds over Bethlehem, Pennsylvania, US
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A sky full of majestic cirrus clouds over Portland, Oregon, US
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Cirrus uncinus "swimming against the flow" over Pottsville, New South Wales, Australia
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