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Optical Effects
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These turbulent clouds preceded a destructive hail storm that included softball size hail over Lubbock, Texas, US.
A spring lamb spotted over Edinburgh, Scotland.
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Mamma cloud features appearing on the anvil of a Cumulonimbus at sunset.
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Asperitas clouds over northwest Connecticut, US.
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Three fallstreak holes, also known as cavum cloud features, spotted over North East Derbyshire, England.
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Cloud ridges known as undulatus in a mixed sky after a four-day blizzard spotted from the North Shore (Silver Bay) of Lake Superior, Minnesota, US.
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Altocumulus lenticularis spotted over Franklin County, Alabama, US, as well as some of the cloud holes called lacunosus and some of the eyebrow-like features that becoming unofficially known as 'supercilium'.
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The distinctive breaking-wave shape of a fluctus cloud feature was spotted here along the top of the accessory cloud cap known as a pileus. This is a rare combination of features, spotted over Franklin County, AL, US.
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Mamma cloud features spotted on the underside of the anvil of a Cumulonimbus storm cloud over London, England.
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Fog over Pleasant Valley, United States
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Cumulus clouds forming a burst of crepuscular rays over Esfahan, Iran.
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Mamma cloud features spotted near a storm over Birmingham, West Midlands, England.
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Mamma cloud features appearing on the underside of the anvil of a distant Cumulonimbus storm cloud, spotted over Antelope Valley, California, US.
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Altocumulus at sunset over Aix-en-Provence, France.
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Altocumulus clouds or a phoenix flying into the sunset, depending on how you look at it, spotted over Santa Barbara, California, US.
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Undulatus over Rauschendorf, Germany
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