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Cirrus on a summer day near El Dorado Hills, Colorado, US
Flying above the clouds over St. Marks Wildlife Refuge, Florida, US
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A storm system with signs of lacunosus over Denver, Colorado, US
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A display of cirrus that inspired Betty to observe "an orca whale morphs into a soaring angel, above the seas where orcas are often found," spotted over Gibsons, British Columbia, Canada
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A storm system over London, England
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Crepuscular rays making their way through a deck of stratocumulus at sunset over Charlo, Montana, US
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A clashing of the clouds, or as Andrea notes, a "cloud-head" blowing the other clouds across the sky, as seen over Freiburg, Germany
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Altocumulus over Taoyuan City, Taiwan
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Valley fog accompanied by clouds above, spotted near Sappada, Italy
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A variety of cirrus spotted over Marinatown Seaside Park, Fukuoka City, Japan
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Stratocumulus over Iligan City, Philippines
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A turbulent storm system spotted by Frano Mika near Rijeka, Croatia
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An expansive display of altocumulus over Santa Rosa, California, US
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Noctilucent clouds appear well beyond the altitude of the altocumulus clouds along the horizon, as seen over Hull, East Yorkshire, England
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A view at sunset, following the passage of a storm near Curtin, Canberra, Australia
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A classic example of pileus spotted over Curitiba, Brazil
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