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Optical Effects
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A classic fallstreak hole, (cavum), over Munsingen, Switzerland.
A fingerprint of Cirrocumulus undulatus over Devizes, England
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Altocumulus over Portal Ridge Wildlife Preserve in Fairmont, California, US
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Mamma over Castres, France
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Cumulus fractus with iridescence over Woodland, Oregon, US.
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22-degree halo over Barbados, West Indies.
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Stratocumulus observed over Mt. Yasur, Tanna Island, Vanuatu. George tells us there is an ash plume visible just beneath the cloud.
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Cumulus over White Tank, New Zealand
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Stratocumulus over Nieuwege, Belgium
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Jellyfish of the sky, also known as Altocumulus clouds producing the evaporating precipitation trails known as virga, spotted drifting over Portland, Oregon, US.
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A classic cap cloud forming over Mount Rainier, Washington, US.
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Dramatic lighting of Stratocumulus spotted over Seattle from Juanita Beach, Lake Washington, WA, US.
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A high formation of Altocumulus stratiformis undulatus, also known more poetically as ‘a mackerel sky’. Spotted over Bendigo, Victoria, Australia.
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Cumulus mediocris over Vermontville, New York, US.
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A stacked form of Altocumulus lenticularis, known by the French term pile d'assiettes, spotted over Cervinia, Italy.
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Cumulus and Cirrostratus over Blakeney, Gloucestershire, England. “To my eye this cloud looks like a bizarre two-headed 'push-me-pull-you' crocodile,“ says Jeremy Williams, “but maybe I’m hallucinating!”
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