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Main Cloud Types
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- Cumulonimbus
Other Clouds
- Arcus
- Asperitas
- Cap / banner clouds
- Capillatus
- Castellanus
- Cataractagenitus
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- Cavum (Fallstreak hole)
- Congestus
- Contrail (homogenitus)
- Duplicatus
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- Floccus
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- Fractus
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- Lacunosus
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- Morning Glory Cloud
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- Mediocris
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- Noctilucent
- Pannus
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- Pileus
- Praecipitatio
- Radiatus
- Silvagenitus
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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
Sunrise with cirrostratus near San Leandro, California, US
Remnants of a contrail spotted over Central Portugal
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Undulatus that shows signs of lenticularis, spotted by Jeremy's daughter-in-law over West Sussex, England
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Reflections upon a sunset over Twin Lakes Recreation Area, Columbia, Missouri, US
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An early morning view over Cirencester, England
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A colourful sky spotted over Keawakapu, Maui, Hawaii, US
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Altocumulus with a glimpse of the moon, as seen from Goldendale, Washington, US
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Low lying clouds near Yilan, Toucheng, Taiwan
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Altocumulus lenticularis over Western Iran
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A view of a variety of cumulus and cumulus fractus from above the Gulf of Mexico
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A road to the clouds, over the Cigu District, Tainan, Taiwan
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A full moon behind a layer of altostratus over Bottesford, North Lincolnshire, England
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Above the clouds near Canberra, Australia
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Sunrise, upon which Laura described as looking like little rabbits in a canoe sailing up to Canada, spotted over Willits, California, US
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Signs of asperitas that Bridget said looked almost like a river in the sky, spotted over Crank, Merseyside, England
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Altostratus giving way to a celestial vantage point, captured near Bluff, Utah, US
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