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Optical Effects
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A large cumulus congestus cloud formation that Bronwyn was hoping would produce some rain following a spell of hot weather, but it dissipated without leaving any rain in its wake, spotted near Pittsboro, North Carolina, US
Pileus spotted over Curitiba, Brazil
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Cumulus congestus with pileus above, as seen from an airplane along the East Coast of North America
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Pileus over Parkersville, United States
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Sunrise with altocumulus lenticularis and pileus over the Adirondack Mountains, near Vermontville, New York, US
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A developing cumulonimbus that Bob observed was capped with a black heart sitting in front of a silver heart, spotted on the Kapiti Coast, north of Wellington, New Zealand
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Pileus over Biga, Indonesia
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A classic example of pileus forming over a developing cumulonimbus, spotted over Kilgore, Texas, US
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Cumulus congestus that appears to be on the verge of developing into a cumulonimbus, with a classic example of pileus over the top of its formation, spotted near Tuggeranong, Australian Capital Territory, Australia
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Pileus over Kleine-Brogel, Belgium
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Pileus over Alto, United States
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Cumulus congestus that brought heavy showers near Erm, Netherlands
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Crepuscular rays and iridescence over Connemara, Ireland
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Pileus over Tortolita, United States
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Pileus over Shenzhen, China
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Pileus over Mountainaire, United States
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