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Main Cloud Types
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Other Clouds
- Arcus
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- Cap / banner clouds
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- Cavum (Fallstreak hole)
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- Mediocris
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- Praecipitatio
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- 'Supercilium' (not official classification)
- Translucidus
- Tuba / Twister
- Uncinus
- Undulatus
- Velum
- Vertebratus
- Virga
- Volutus (Roll cloud)
Optical Effects
- 22° Halo
- 46° Halo
- Circumhorizon Arc
- Circumscribed halo
- Circumzenithal Arc
- Cloudbow / Fogbow
- Corona
- Crepuscular rays & shadows
- Diffuse arcs
- Green flash
- Glory
- Halos
- Helic arc
- Infralateral arc
- Iridescence
- Lower Sun Pillar
- Lower Tangent Arc
- Moonbow
- Moondogs
- Parhelic circle
- Parry antisolar arcs
- Parry arc
- Parry infralateral arc
- Parry supralateral arc
- Rainbow
- Sub parhelion
- Sub-sun
- Suncave parry arc
- Sun dog (Parhelion)
- Sun pillar
- Supernumerary bows
- Subparhelic circle
- Supralateral arc
- Upper tangent arc
- Wegener arc
A close encounter of the ‘lenticularis cloud’ kind over Mount Etna, Sicily, Italy. The formation results from a ‘standing wave’ of air as the wind passes over the island‘s volcano.
Amidst a storm, a portal to the sky is spotted over Carmel, California, US
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When Mario went outside in the morning with his dogs, he saw Mona Lisa's smile within the clouds, spotted over Santa Fe, New Mexico, US
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Cumulus congestus amidst the blue sky over Berkeley, California, US
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Stratocumulus spotted over Taiwan
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Undulatus spotted near sunrise over West Esfahan, Iran
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Altocumulus stratiformis undulatus spotted over Cape St Vincent, Algarve, Portugal
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Sunrise over San Leandro, California, US
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A colourful sky over Kaohsiung, Taiwan
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A large fish swooping to eat a tree, spotted in the clouds above Estrella Foothills, Arizona, US
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Patterns in the sky over Bangkok, Thailand
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Altocumulus lenticularis duplicatus, also known as 'pile d'assiettes', spotted at sunrise by Michael's friend, Barclay Rives, near Keswick, Virginia, US
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Cumulus spotted near Southampton, England
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A contrail winding through the sky over Carver, Minnesota, US
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A contrast in the sky during sunrise over Woodland Hills, California, US
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22-degree halo spotted by John's sister-in-law, Patricia Heath, over the Basílica Catedral de Lima, Peru
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