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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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- '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 'fish' swimming through the sky over Estrella Foothills, Arizona, US
Cirrus over Pateros, Washington, US
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The shadow of the Cumulus being casted upon higher level clouds, spotted over Coffs Harbour, Australia
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Cirrus spotted over Cheddar Gorge, Somerset, England
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A feather in the sky, spotted over Gympie, Queensland, Australia
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Signs of Cirrus fibratus spotted over Taguatinga, Brazil
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Cirrus uncinus spotted during the late morning over Modbury Heights, Adelaide, South Australia, Australia
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A plethora of high level clouds, with Cirrus uncinus and an intersecting contrail, spotted by David's son, Craig West, over Callerton, near Newcastle upon Tyne, England
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Circumzenithal Arc submitted by CAS member, Nick Trevor, and spotted by Julia Mackie over Clapham, London, England
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Cirrus over Falls Church, Virginia, US
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Stratus fractus hugging the mountainside as the sky above began to clear near Beddgelert, North Wales
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Circumhorizon Arc spotted over Lewiston, Maine, US
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Crepuscular rays with strips of Cirrus high in the sky, spotted near Boca Raton, Florida, US
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Circumhorizon Arc spotted over Alexandria, Virginia, US
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A dynamic sky presented itself over Top of Parlick, Chipping, Lancashire, England
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Cirrus spotted over Pietracorbara, Cap Corse, France
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