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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
- Humilis
- Incus
- Intortus
- Lacunosus
- Lenticularis
- Mamma
- Morning Glory Cloud
- Murus (Wall cloud)
- Mediocris
- Nacreous
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- Noctilucent
- Pannus
- Perlucidus
- 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
Altocumulus lenticularis duplicatus, also known as 'pile d'assiettes', forms when stable, moist air flows over a large obstacle such as a mountain, creating waves that cause the clouds to form at the crests. In this classic example, there are multiple, stacked layers of these lens-shaped clouds, spotted over Torres Del Paine National Park, Patagonia, Chile.
A mixture of clouds and wildfire smoke in this 90-second exposure photograph near Bluff, Utah, US
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Altocumulus over Temecula, California, US
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A storm system near Guna, Madhya Pradesh, India
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Cumulus spotted over Esfahan, Iran
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Altocumulus spotted shortly after sunrise over Toyohama, Fukuoka City, Japan
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Cumulus humilis spotted over Falls Church, Virginia, US
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Cirrus uncinus spotted during the late morning over Modbury Heights, Adelaide, South Australia, Australia
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22-degree halo spotted over Vancouver, Washington, US
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Converging contrails create a matrix in the sky, spotted over Estrella Foothills, Arizona, US
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Primary and secondary rainbows spotted over Moose Jaw, Saskatchewan, Canada
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22-degree halo spotted over Carlton, Washington, US
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A colourful evening view over Mahajeran, Iran
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Pileus spotted above Cumulus congestus near Guna, Madhya Pradesh, India
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Cloud-to-cloud lightning spotted during a thunderstorm near Lewisham, London, England
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A storm that brought some relief to the hot weather in the region, including Wantage, Oxfordshire, England
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