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Altocumulus lenticularis duplicatus, also known as "pile d'assiettes", a term used for a series of lenticular clouds, stacked one above the other, caused by wave motion in multiple humid layers of air, as seen here over the Sandia Mountains, Albuquerque, New Mexico, US
Altocumulus stratiformis radiatus over Troy, Michigan, US
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Altocumulus lenticularis duplicatus accompanied by Mt. Rainier in a majestic pairing near Seattle, Washington, US
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Supercilium, an unofficial classification for a short-lived cloud feature, which appear in turbulent airflow over, and to the immediate lee of, steep mountain peaks during periods of strong mountain summit level winds. This classic example was spotted near Busquistar, Andalusia, Spain.
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Altocumulus lenticularis duplicatus spotted near Capdenac, Lot, France
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Altocumulus lenticularis duplicatus, also known as pile d'assiettes, spotted over Hexham, Northumberland, England
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Altocumulus lenticularis duplicates with cumulus fractus in the foreground, spotted over Patagonia, Argentina
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A classic example, as well as a mesmerizing display, of altocumulus stratiformis radiatus, spotted by Travis and his students at Santa Rita Middle School, Liberty Hill, Texas, US
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Altocumulus lenticularis duplicatus over Gorbea, a mountain with a height of 1,482 meters above sea level, in the Basque Country, Spain
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Altocumulus lenticularis near Canutillo, Texas, US
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A classic example of altocumulus lenticularis duplicatus, spotted over Picinisco, Lazio, Italy
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After three days of whiteout snow and wind, Darren shared that this was the view from the top of the chair lift, with a classic example of an altocumulus lenticularis spotted over Flaine, France.
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Fallstreak Hole (Cavum) with a "tail" that Nigel said extended beyond what was captured in this photograph by approximately three times the length seen here, spotted over Newton upon Rawcliffe, Yorkshire, England.
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Altocumulus lenticularis duplicatus near Brighton, Colorado, US
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Altocumulus lenticularis duplicatus, which is also known via the French term, 'pile d'assiettes', for a 'stack of plates'. This classic example was spotted over Lake Peak in the Sangre de Cristo Mountains, near Santa Fe, New Mexico, US.
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Altocumulus lenticularis, along with lenticularis that appear to be at the stratocumulus level in the background, spotted near Torres Del Pine, Patagonia, Chile
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