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Optical Effects
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Virga spotted at dusk over Northampton, England
Cumulus congestus spotted near Yilan, Taiwan
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Mammatus (Mamma) spotted over Sacramento, California, US
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An eye-catching example of Altocumulus lenticularis duplicatus, also known as 'pile d'assiettes', spotted while driving west from Madrid, near Sierra De Gredos, Spain
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Crepuscular rays and shadows over North Lakes, Queensland, Australia
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Primary and secondary rainbows spotted over Warwickshire, England
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Mammatus (Mamma) spotted over Bathinda, India
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Cirrostratus undulatus spotted over Pic de Montaut in the French Pyrénées, near Sarrancolin, France
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Cirrocumulus with signs of lacunosus within its formation, spotted over Somerset, England
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Virga over London, England
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Horseshoe vortex spotted over Brighton, Colorado, US
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A classic example of Virga, where precipitation evaporates when it falls into a layer of dry air, spotted over Stuttgart, Killesberg, Germany
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A plethora of contrails spotted near Munich, Bavaria, Germany
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Moon Dogs, also known as paraselenae, a rare optical phenomenon, spotted along with a 22-degree lunar halo over Sumirago, Varese, Italy
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A plethora of contrails spotted by Alexia's friend, Ted Burrowes, near Lexington, Virginia, US
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Supernumerary bows spotted along with a secondary bow over Little Green Farm, Bedford, Virginia, US
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