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Optical Effects
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Following a particularly strong line of thunderstorms, accompanied by a few tornadoes in the region, Scott captured this stunning view of mammatus (mamma) as the storms departed the area near Plymouth, Wisconsin, US
Lightning strike during a storm over Kota, India
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Significant updrafts propelled the development of this particular cumulonimbus, which Sarah entitles "Sunset lights up an expanding storm", spotted over St. Louis, Missouri, US
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A dynamic view of a rain shaft within a mature cumulonimbus near Brighton, Colorado, US
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During an afternoon wherein there was a Tornado Warning for the county, mammatus (mamma) clouds develop in association with a storm, spotted over Wiliamson County, Texas, US
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Cumulonimbus near Alpine, Texas, US
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An imposing storm system from which Patrick said produced small hail and a small funnel, east of Brighton, Colorado, US
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Lightning within a storm system over Sydney, Australia
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A stunning reflection of mammatus (mamma) over Stoneridge Lake, Yukon, Oklahoma, US
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A storm system moving over farmland near Randolph, Iowa, US
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Arcus, also known as a shelf cloud, ushering in a storm near Montevideo, Uruguay
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Mammatus (Mamma) over Mill Park, Melbourne, Australia
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Lightning during an evening storm over Siler City, North Carolina, US
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Mammatus (Mamma), which can accompany thunderstorms, spotted over Boston Spa, West Yorkshire, England
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Arcus, also known as a shelf cloud, marks the leading edge of a storm system near The Entrance North, New South Wales, Australia
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An impressive view of a developing cumulonimbus from the top of the Partenio mountains looking towards the top of Monte Stella twenty kilometers away, spotted in Italy.
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