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Optical Effects
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Altocumulus with signs of undulatus and lacunosus, spotted at sunset over Guna, Madhya Pradesh, India
Cirrocumulus coupled with the remnants of contrails, spotted over Arlington, Washington, US
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Altocumulus stratiformis spotted over Carlton, Washington, US
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An approaching storm near Noordschote, Belgium
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Asperitas and signs of lacunosus spotted over Dartmoor, Devon, England
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Asperitas and signs of lacunosus spotted over Marion, Iowa, US
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Cirrus fibratus spotted over Yebes, Spain
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Asperitas and lacunosus spotted shortly before a thunderstorm over Kassel, Germany
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Altocumulus lenticularis with signs of lacunosus, spotted over the Chiricahua Mountains, near the Southwestern Research Station, Portal, Arizona, US
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Asperitas with signs of lacunosus, spotted over Woodford Halse, Northamptonshire, England
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Cirrocumulus undulatus with signs of lacunosus, spotted near Mt. Shasta, California, US
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Altocumulus with signs of lacunosus, accompanied by subtle crepuscular rays closer to the horizon, spotted over Zingst, Germany
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Lacunosus spotted near Mt. Shasta, California, US
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Altocumulus with signs of lacunosus within a higher layer of Cirrocumulus, spotted over Modbury Heights Adelaide, South Australia, Australia
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Signs of lacunosus spotted towards the edge of this Altocumulus cloud formation, near Charlo, Montana, US
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Cirrocumulus with signs of lacunosus spotted over Curtin, Canberra, Australia
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