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Main Cloud Types
- Cumulus
- Stratus
- Stratocumulus
- Altocumulus
- Altostratus
- Cirrus
- Cirrocumulus
- Cirrostratus
- 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
Shreds of Stratus, known as Stratus fractus, on the slopes near the Blackfoot River in Montana, US.
A 22-degree halo formed by Cirrostratus cloud and some cloud iridescence formed by Cumulus fractus, spotted over Zoetermeer, South Holland, Netherlands.
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Cumulus clouds forming a burst of crepuscular rays over Esfahan, Iran.
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Cumulus, Stratocumulus and Altocumulus vie for attention over the Adirondack Mountains, New York, US.
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The Greek god Zeus arrives just ahead of a storm. Spotted over Pacifica, California, US.
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A dying Cumulus, also known as Cumulus fractus, at the end of the day over East Beach, Santa Barbara, California, US.
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Dissipating Cumulus clouds at sunset, spotted over Karbala, Iraq.
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A breaking heart over Bigfork, Montana, US.
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Crepuscular rays over Korea.
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A pig over Arizona, US.
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A sunset over Moulton, Lincolnshire, England.
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Cumulus fractus spotted over Window Rock, Apache County, Arizona, US.
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An Iridescent fringed Cumulus over St. Louis, Missouri, US.
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The peak of Aiguille du Midi on the Mont Blanc massif, emerging from the surrounding clouds.
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Clouds over the peaks of Langtang, Nepal.
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"As above, so below."; when clouds mimic Lake Superior icebergs. Herbster, Wisconsin, US.
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