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Main Cloud Types
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- Cumulonimbus
Other Clouds
- Arcus
- Asperitas
- Cap / banner clouds
- Capillatus
- Castellanus
- Cataractagenitus
- Cauda (Tail cloud)
- Cavum (Fallstreak hole)
- Congestus
- Contrail (homogenitus)
- Duplicatus
- Diamond dust
- Distrail
- Fibratus
- Flammagenitus (Pyrocumulus)
- Floccus
- Fluctus (Kelvin-Helmholtz)
- Fractus
- Homogenitus
- Horseshoe vortex
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- Intortus
- 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
- Spissatus
- Stratiformis
- '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
An expansive display of Cirrus uncinus over Prevost Harbor, Stuart Island, San Juan Islands, Washington, US
A mixture of clouds over Estrella Foothills, Arizona, US
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Cirrus spissatus spotted over Modbury Heights, Adelaide, South Australia, Australia
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Cirrus fibratus spotted over Victoria, British Columbia, Canada
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Cirrus homogenitus, formed from the remnants of a contrail, spotted over Stockport, England
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Undulatus spotted over Abbots Lagoon, Point Reyes, California, US
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Cirrus uncinus spotted over Val de la Mare Reservoir, Parish of St Peter, Jersey, Channel Islands
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Cirrus spissatus spotted over Boise, Idaho, US
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Cirrostratus spotted over Taylor, Texas, US
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Cirrus uncinus spotted over Dereham, Norfolk, England
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An evolving display of Cirrus spotted over Mulholland Drive, Los Angeles, California, US
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A creature in the sky over Greenfield, California, US
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A variety of Cirrus spotted over Montana, US
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A 'fish' swimming through the sky over Estrella Foothills, Arizona, US
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Cirrus over Pateros, Washington, US
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The outline of a Cumulus cloud casting a shadow on a thin layer of stratus haze beneath it, spotted over Coffs Harbour, Australia
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