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Signs of fluctus (Kelvin-Helmholtz) as viewed from the Steart Marshes, looking south towards Quantock Hills, Somerset, England
Undulatus and Kelvin-Helmholtz (Fluctus) spotted at different levels of the troposphere, near North Devon, England
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Fluctus (Kelvin-Helmholtz) just below the view of the moon, spotted over Metheringham, Lincolnshire, England
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Fluctus (Kelvin-Helmholtz) spotted to the northeast of the East Texas Regional Airport, Texas, US
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Signs of fluctus over Lac Leman (Lake Geneva), near Chamby, Switzerland
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Stractus fractus fluctus, which is a ragged, low-level cloud layer with some Kelvin-Helmholtz wave clouds sitting atop, as spotted here near Lancaster, California, US
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Altocumulus lenticularis along with signs of fluctus spotted over the Missouri River, near Wolf Creek, Montana, US
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Fluctus (Kelvin-Helmholtz) and its surf-like waves spotted on a windy morning over Cornwall, England
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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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