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A variety of cirrus clouds over Oakland, California, US
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Altocumulus with the view of the moon spotted during the early evening over the hills of Laguna Niguel, California, US
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Cumulonimbus viewed at night, near Siler City, North Carolina, US
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Cirrocumulus cloud formation that appears to have originated from a contrail, spotted near Walnut Creek, California, US
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Cirrocumulus undulatus over Jilin Province, China
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Mammatus (Mamma) spotted over Woden, Canberra, Australia
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Nacreous over Lauvland, Norway
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A vivid sunset, as photographed by Moriah's sister, Brianna Rivas, near Antelope Valley, California, US
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Crepuscular rays over Pitman, New Jersey, US
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A storm system with a well-developed arcus, also known as a shelf cloud, near Cotia, Sao Paolo, Brazil
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Signs of lenticularis that Alan commented looks like a hen, spotted over Scotland
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Late day iridescence in thinning altocumulus lenticularis, spotted over Brighton, Colorado, US
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After a week of gloomy days, Andrea shared that there was a fabulous sunset show with several layers of clouds sliding overhead and changing colour by the minute, as seen over Bolton, Ontario, Canada.
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Signs of a horseshoe vortex over Cotia, São Paulo, Brazil
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