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Other Clouds
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Optical Effects
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Signs of Fluctus (Kelvin-Helmholtz) spotted on a windy evening shortly after sunset near Taylor, Texas, US
A view of the blue sky amidst the clouds, spotted on a windy day over Miaoli County, Taiwan
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Crepuscular rays upon undulatus over Northwest Iran
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A mixed sky over the foothills of the Cevennes, near Sauve, France
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Altocumulus stratiformis undulatus, also known as a 'mackerel sky', spotted over Burton on Trent, England
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A mesmerizing view of altocumulus stratiformis undulatus, also known as a 'mackerel sky', spotted over Rossford, Ohio, US
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A set of trees reaching upwards towards the sky, with cirrocumulus undulates spotted over Somerset, England
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Iridescence amidst a mixed sky over Vallejo, en route to San Francisco, California, US
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Altocumulus stratiformis undulatus, also known as a mackerel sky, which reminded Roger Graham Hewstone of the sailor's old proverb; 'mares tails and mackerel scales make lofty ships take down their sails, wary of bad weather ahead'. This example was spotted looking west from Ormskirk, Lancashire, England.
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A corona amidst altocumulus undulatus, spotted over Modbury Heights, Adelaide, South Australia, Australia
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An intricate web of undulatus, accompanied by signs of lacunosus, spotted over Lake Stevens, Washington, US
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A panoramic view of a developing storm near Lawrenceburg, Kentucky, US
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Cirrocumulus spotted over Anversa degli Abruzzi, Italy
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Altocumulus undulatus spotted over Madison, Wisconsin, US
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Altocumulus undulatus spotted at night over Atlanta, Georgia, US
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Sunrise over Mahajeran, Western Iran
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