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Altocumulus lenticularis along with signs of fluctus spotted over the Missouri River, near Wolf Creek, Montana, US
Fluctus (Kelvin-Helmholtz) and its surf-like waves spotted on a windy morning over Cornwall, England
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Fluctus (Kelvin-Helmholtz), which Lars described as the biggest surf ever seen in Denmark, spotted over the Copenhagen airport, Denmark
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Fluctus (Kelvin-Helmholtz) developing at sunrise over Madison, Wisconsin, US
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Fluctus (Kelvin-Helmholtz) spotted over Baltimore, Maryland, US
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Fluctus (Kelvin-Helmholtz) spotted near Antelope Valley, California, US
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Fluctus (Kelvin-Helmholtz) over Trearddur Bay, Anglesey, Wales
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Fluctus (Kelvin-Helmholtz) spotted near the Golden Gate Bridge in San Francisco, California, US
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Fluctus (Kelvin-Helmholtz) over Erm, Netherlands
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Fluctus (Kelvin-Helmholtz), or as Ursula quipped, "Oh! Wow! It's those Meyer, er, Maier, oh, Meyerholz?, er, those wave clouds!" This classic example of fluctus was spotted over Sunnyvale, California, US.
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Fluctus (Kelvin-Helmholtz) and altocmumulus lenticularis sharing the sky over the Missouri River, near Wolf Creek, Montana, US
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Signs of Flucuts (Kelvin-Helmholtz) at the top of the cumulus cloud, spotted over Neustadt in Sachsen, Germany
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Altocumulus lenticularis and Fluctus (Kelvin-Helmholtz) sharing the sky over Akaroa, New Zealand
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Fluctus (Kelvin-Helmholtz) over Ningbo, China
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Fluctus (Kelvin-Helmholtz), albeit via a brief display, spotted near Denver, Colorado, US
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Fluctus (Kelvin-Helmholtz) is a short-lived phenomenon that occurs when there is a strong vertical wind shear between two air streams, causing winds to blow faster at the upper level than at the lower levels. This example was spotted over Teddington, London, England.
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