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Optical Effects
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Signs of mammatus (mamma) in this dissipating storm system, spotted in the "Hill Country Strong" area of Kerrville, Texas, US
Remnants of a dissipating storm system over the Philippine Sea
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Signs of a developing storm spotted over Estrella Foothills, Arizona, US
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A storm system with notable precipitation near Somerset Coast, England
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The edge of a storm system near Sumirago, Varese, Italy
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A roll cloud, or volutus, which is a rare, low horizontal tube-shaped arcus cloud, detached from the parent storm cloud, and represents the leading edge of a thunderstorm's gust front. This example was spotted between Vinylhaven Island and the Rockland area of the Mid-Coast, near Penobscot Bay, Maine, US.
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A developing storm system over Chioggia, south of Venice, Italy
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With an ode to Joni Mitchell and 'Both Sides Now', William spotted these developing cumulonimbi near Salisbury, England
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Last light on the 'Sacred Mesa' under a monsoonal sky, as Paul highlights, wherein the formation catches the light similarly several times each year. This photograph was taken nearly a mile away, with the 'Sacred Mesa' measuring roughly 100 yards high and 400 yards wide, as seen here near Bluff, Utah, US.
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The aftermath of a storm system near Rufford, West Lancashire, England
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Lightning within a storm system that was associated with Hurricane Erin over the Atlantic Ocean, spotted near Back Bay, Boston, Massachusetts, US
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A dissipating storm system near Hartrigg Oaks, New Earswick, York, England
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A reflection of a developing storm, spotted near Sacramento, California, US
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Reflections of a cumulonimbus over Abruzzo National Park, Barrea, L'Aquila, Italy
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A storm system with brief, yet notable, precipitation over Antelope Valley, California, US
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The beginning, or the end, of a rainbow, visible amidst a swirl of clouds over North Dundas Township, Ontario, Canada
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