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Optical Effects
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A stormy sky over Zhejiang, China
Mammatus (Mamma) spotted over Tallahassee, Florida, US
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Mammatus (Mamma) spotted over Petaling Jaya, Selangor, Malaysia
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Signs of mammatus (mamma) and virga within this developing, elevated storm near North Dundas Township, Ontario, Canada
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Mammatus (Mamma) spotted over Achim, near Bremen, Germany
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Primary and secondary rainbows following the passage of a storm near Brighton, Colorado, US
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An expansive view of a severe thunderstorm that produced large hail and heavy rain near Brighton, Colorado, US
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A classic example of Mammatus (Mamma) spotted over Villefranche sur Mer, France
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A storm accompanied by mammatus (mamma), spotted over North Dundas Township, Ontario, Canada
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Mammatus (Mamma) spotted over Rome, Italy
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Mammatus (Mamma) spotted over London, England
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A stormy and colourful sky over Micco, Florida, US
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Mammatus (Mamma) spotted over Saeeda Al-Sawaleha, Saudi Arabia
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Mammatus (Mamma) spotted over Albuquerque, New Mexico, US
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A storm that brought some relief to the hot weather in the region, including Wantage, Oxfordshire, England
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Virga with signs of Mammatus (Mamma) spotted near Bristol, England
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