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Other Clouds
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Optical Effects
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Crepuscular rays and shadows during sunset over Cefalu, Sicily, Italy
Lacunosus over Curtin, Canberra, Australia
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Altocumulus lenticularis by way of a stacked form, also known as pile d'assiettes, spotted in multiple places over Mercogliano, Italy
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Crepuscular rays over Galashiels, Scottish Borders, Scotland
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Sunrise with what is called a "pop-up" squall off to the right side of this colorful scene over the Atlantic Ocean, as viewed from Boca Raton, Florida, US
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Although mamma (mammatus) usually form on the base of a cumulonimbus anvil, they can also form on other cloud types such as stratocumulus, altostratus, or in this case, in a subtle way within altocumulus, spotted here over Monte Porzio Catone, Rome, Italy.
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Cirrocumulus with signs of a possible cavum (fallstreak hole), spotted over Kingston, Tasmania, Australia
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Sunset near Antelope Valley, California, US
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Iridescence with some cumulus fractus over New Taipei City, Taiwan
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Undulatus over Weymouth, Dorset, England
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Altocumulus stratiformis over Yeonsu-gu, Incheon, South Korea
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Asperitas over Puyallup, Washington, US
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Sun Dog over Craigville Beach, United States
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Clouds illuminated by moonlight, urban light, and lightning over Montezuma Creek, Utah, US
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Altocumulus in both its stratiformis and lenticularis forms, along with undulatus and cumulus fractus in this mixed sky over Neibla, near Valdivia, Chile.
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A contrail amidst the cumulus fractus, spotted over Gwangju-si, South Korea
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