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Other Clouds
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Optical Effects
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Mammatus (Mamma), often associated with thunderstorms, are indicative of sinking cold air that's carried into warmer air layers and create the characteristic bumpy, rounded appearance, as seen here over Hovell's Creek, Geelong, Victoria, Australia.
Stunning crepuscular rays over Abruzzo National Park, near Villetta Barrea, Italy
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Mammatus (Mamma) spotted by Sara's niece over Montana State University, Bozeman, Montana, US
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Storm development during monsoon season, accompanied by a relatively small horseshoe vortex, over Tucson, Arizona, US
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A painted sky over Eskdale, Cumbria, England
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An approaching storm system near Brighton, Colorado, US
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Layers of altocumulus lenticularis, also known as 'pile d'assiettes', with signs of asperitas closer to the horizon, amidst the display of undulatus over Singleton, New South Wales, Australia
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The visible moon beyond the reach of an approaching cumulonimbus, spotted over Zagreb, Croatia
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A developing storm system over Lake Maggiore, Piemonte, Italy
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A mirror image of the sky over Lake Savica, Zagreb, Croatia
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Asperitas in front of an approaching storm near Sumirago, Varese, Italy
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Crepuscular rays and shadows over Chandler, Arizona, US
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A skylight of the Weatherspoon Art Museum at the University of North Carolina - Greensboro providing a view of altocumulus perlucidus over Greensboro, North Carolina, US
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Virga, along with unrelated signs of fluctus, amidst a colourful sky over Birmingham, England
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Altocumulus undulatus radiatus spotted over West End, Brisbane, Australia
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Altocumulus undulatus radiatus spotted over Taringa, Queensland, Australia
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