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Main Cloud Types
- Cumulus
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- Stratocumulus
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- Cirrocumulus
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- Nimbostratus
- 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
- Nebulosus
- 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
A line of volcanos each with its own Cumulus compadre in the Atacama Desert, Chile.
Cumulus congetus 'peeking' over the White Mountains and the Ancient Bristlecone Pine Forest in Inyo County, near Bishop, California, US
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A rainbow, created by sunlight that interacts with water droplets through the process of refraction, reflection, and dispersion, spotted over Forestville, California, US
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Altocumulus lenticularis duplicatus, also known as 'pile d'assiettes', spotted in the lee of Mount Pantokrator, Corfu, Greece
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An elongated version of Cirrus uncinus, spotted while looking east towards Southport, near Rufford, West Lancashire, England
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Signs of what appears to be a variation of an approaching arcus, ushering in inclement weather, spotted near Aberdyfi, Wales
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Undulatus spotted over Fowlmere, Cambridgeshire, England
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An arcus, also known as a shelf cloud, indicating a leading edge of a storm system, spotted near Malebelling, Western Australia, Australia
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Altocumulus stratiformis undulatus spotted over Google, East Riding of Yorkshire, England
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Cirrus vertebratus spotted over Busquistar, La Alpujarra, Andalucia, Spain
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22-degree halo with signs of a 46-degree halo, spotted over Chikkajala, Bangalore, India
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A cap cloud, a unique form of an Altocumulus lenticularis, spotted over Mount Jungfrau, Switzerland
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Iridescence spotted over the Mystic River, Medford, Massachusetts, US
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Cirrostratus undulatus spotted over Madison, Wisconsin, US
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A vibrant and wispy looking sky over Walnut Creek, California, US
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Altocumulus undulatus, formed when stable air flows over a layer of wind shear, spotted over Hoi An, Vietnam
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