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Optical Effects
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A lowering of a layer of cloud, which appears to be a variation of a Cavum (Fallstreak Hole), spotted over Fayetteville, Arkansas, US
Corona and iridescence over Wells, Somerset, England
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A mix of asperitas and lacunosus over Worthing, West Sussex, England
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Cumulus congestus along the horizon, near Lombard, Illinois, US
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Crepuscular rays at sunrise, accentuated by the dust particles in the sky due to regional wildfires, spotted near Antelope Valley, California, US
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Altocumulus lenticularis over Dongnae-gu, Busan, South Korea
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Altocumulus undulatus over Montevergine, Mercogliano, Italy
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Fog is sometimes described as a ground-level Stratus cloud, since that’s the lowest of the main clouds. However, it often forms quite differently. In this photograph, it appears that this is valley fog for the most part, which is a variation of "radiation fog" after a cool and clear night, wherein the cold, foggy air sinks downhill and gathers further below. This classic example was spotted over Pauatahanui Inlet, north of Wellington, New Zealand.
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Crepuscular Rays over Spaceport City, United States
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A solid layer of stratocumulus clouds following a storm that took place near Springfield, Ohio, US
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Cumulus fractus populating the evening sky over Manhattan, New York, US
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Cumulus fractus drifting below high level contrails over La Romieu, France
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Cumulus fractus over Satara, Maharashtra, India
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Iridescence over Norman, Oklahoma, US
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Supercilium, an unofficial classification for a cloud formation that resembles eyebrow-like features, spotted over Braithwaite, Cumbria, England
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Cumulus congestus that Sean says looks like a cloud that is smoking, spotted near Lighthouse Point, Florida, US
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