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Optical Effects
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Mamma (Mammatus) clouds following tornado activity near Oklahoma City, Oklahoma, US
Virga at sunset over California, US
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An expansive storm system spotted near Fort Polk, Leesville, Louisiana, US
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Returning from a trip to Norway, Mike had this view of the sea and the sky, approximately 50 kilometers east of Sumburgh, Shetland, Scotland
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Virga spotted looking west from Wellingborough, North Northamptonshire, England
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A grand display of cirrus, along with a quote provided by Anthony, referencing Mark Twain from "Roughing It" (1872), which is as follows: “The air up there in the clouds is very pure and fine, bracing and delicious. And why shouldn’t it be? It is the same the angels breathe.” This view was seen from Old Yeavering in Northumberland National Park, near Wooler, England.
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Fluctus (Kelvin-Helmholtz) resembling the waves below, spotted near Tofino, British Columbia, Canada
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A developing cumulonimbus beyond the skyline of Minneapolis, Minnesota, US
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A view from the top of a tower while servicing instruments that measure the "breathing of the forest", near Ashland, Missouri, US
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The pathway of lightning clearly marked in the evening sky over Arlington, Virginia, US
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A contrast between land and sky, accentuated by the stratocumulus as spotted by David's son, Craig West, when looking towards Coquet Island from Amble, Northumberland, England
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Stratocumulus lenticularis, an uncommon version of the lenticular cloud, spotted over Avellino, Italy
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Virga over Salida, Colorado, US
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Signs of mammatus (mamma) at sunset near Hexham, Northumberland, England
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A duck traversing the reflection of the cumulus clouds, spotted on the Connecticut River, near Turners Falls, Massachusetts, US
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Two areas of developing cumulonimbus, spotted along the horizon near North Dundas Township, Ontario, Canada
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