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Main Cloud Types
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Other Clouds
- Arcus
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- 'Supercilium' (not official classification)
- Translucidus
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- 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
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- Infralateral arc
- Iridescence
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- 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
Undulatus over Glen Helen, Australia
Altocumulus stratiformis spotted by Christiane's daughter, with a view of Mt. Rainier, near Seattle, Washington, US
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Stratus moving in over Isle of Harris, Scotland
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Altocumulus lenticularis and Altocumulus floccus spotted by Nancy's granddaughter, Violet, near Yellowstone National Park, US
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Altocumulus spotted over Washington Pass, near Mazama, Washington, US
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Undulatus spotted during the late afternoon over São Paulo City, Brazil
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Signs of a roll cloud, also known as Stratocumulus volutus, spotted near Rufford, West Lancashire, looking west over the sea beyond Southport, England
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Altocumulus lenticualris spotted over Saida Al-Sawaleha, Saudi Arabia
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Stratus spotted over Sovereign Harbour, Eastbourne, England
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Undulatus spotted over a megalithic site near Carnac, France
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A 'falcon' spotted over Tasmania, Australia
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Asperitas spotted within a storm that was heading east, while Celia and her father were traveling westbound on I-70, near Wentzville, Missouri, US
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Cumulus clouds that take on the look of T-Rex playing with the setting sun, spotted over Canberra, Australia
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A storm with notable precipitation spotted near Plaquemine, Louisiana, US
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Altocumulus perlucidus spotted over Khomeynishahr City, Esfahan, Iran
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An approaching storm near Noordschote, Belgium
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