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Optical Effects
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Mammatus (Mamma) at sunset over Hyderabad, India
A storm system spotted from the High Ridge Trail at Rock Bridge State Park, near Columbia, Missouri, US
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Mammatus (Mamma) over Roermond, The Netherlands
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Mammatus (Mamma) dissipating over Somerset, England
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A picturesque sunset over Charlo, Montana, US
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A developing storm with signs of mammatus (mamma) over Luskentyre Beach, Isle of Harris, Scotland
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Mammatus (Mamma), often associated with thunderstorms, are indicative of sinking cold air that's carried into warmer air layers and create the characteristic bumpy, rounded appearance, as seen here over Hovell's Creek, Geelong, Victoria, Australia.
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Mammatus (Mamma) spotted by Sara's niece over Montana State University, Bozeman, Montana, US
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An approaching storm system near Brighton, Colorado, US
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Monsoonal storm system at sunset, east of the Santa Catalina Mountains, Oro Valley, Arizona, US
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Mammatus (Mamma) at sunset over Oro Valley, Arizona, US
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A dissipating storm system at sunset over Esmeralda County, Nevada, US
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Storm development with various shades of grey, accompanied by signs of mammatus (mamma), spotted over Arnhem, Netherlands
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Signs of mammatus (mamma) at sunset near Hexham, Northumberland, England
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Mammatus (Mamma) at sunset near Sacramento, California, US
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A notable storm system with defined mammatus (mamma) spotted near Brighton, Colorado, US
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