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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
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- Intortus
- Lacunosus
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- Morning Glory Cloud
- Murus (Wall cloud)
- 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
Moon and Venus in conjunction at twilight, visible in the sky and accompanied by altocumulus in the foreground, spotted near Bluff, Utah, US
Cirrus spissatus over northern New Mexico, US
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A heart shaped cumulus cloud formation spotted over Twisp, Washington, US
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22-degree halo acccompanied by what appears to be an upper tangent arc, spotted over Summonte, Italy
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A view from above, looking out at clouds of a cumulus origin, in various stages of growth and development, near Shenzhen, China
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Stratocumulus over Hsinchu City, Taiwan
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The leading edge of a storm system near Paynesville, Minnesota, US
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Sunset over Magdeburg, Germany
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Clouds moving swiftly over Moss Landing, California, US
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A dynamic view of undulatus and mammatus, ushering in the arrival of a front along the Oregon Coast, near China Creek Beach, Bandon, Oregon, US
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Cumulus congestus over Seaburn, Sunderland, England
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A storm system with a leading arcus, otherwise known as a shelf cloud, near Brighton, Colorado, US
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Cumulonimbus near North Dundas Township, Ontario, Canada
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The view during a scenic bike ride, a vast sky filled with clouds, spotted near Wolf Creek, Montana, US
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A view from above, with cumulus congestus in the distance, spotted over Henan Province, China
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Altocumulus stratiformis over Ocean Shores, Washington, US
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