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Other Clouds
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Optical Effects
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- Wegener arc
Undulatus with indications of altocumulus lenticularis spotted near Zermatt, Switzerland
A vibrant sunset following an earlier thunderstorm near Brisbane, Australia
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Altocumulus undulatus at sunrise as viewed from west of the Rocky Mountain foothills, looking east, near Fort Collins, Colorado, US
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Contrails and contrail shadows present themselves in this unique atmospheric optical phenomena, wherein the shadows are created when the sun (or moon) casts a shadow of an aircraft contrail onto a lower layer of clouds or haze. The interplay of light, clouds, and ice crystals, coupled with one's viewing angle, gives rise to a captivating display in the sky, as seen here during sunset over Falls Church, Virginia, US.
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Altocumulus undulatus radiatus, viewed while facing north in the early morning hours, near Charlo, Montana, US
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Altocumulus lenticularis spotted over the Sierra Nevada mountains, as viewed from Granada, Spain
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Undulatus over West London, England
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Altocumulus undulatus over London, England
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Altocumulus undulatus radiatus over Nokonoshima Island, Fukuoka City, Japan
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Undulatus over Kinnaird, United Kingdom
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Undulatus over National Taipei University, New Taipei City, Taiwan
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An expansive display of altocumulus over Mendip Hills, England
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Altocumulus undulatus over Fleet, Hampshire, England
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"Sunset Inferno, South Jersey", as titled by Joseph's daughter, who spotted this near Cherry Hill, New Jersey, US
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A distrail and a contrail both visible through cirrocumulus, spotted over Wells, Somerset, England
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Altocumulus stratiformis undulatus, also known as a "mackerel sky", at sunrise over Wells, Somerset, England
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