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Main Cloud Types
- Cumulus
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- Cirrocumulus
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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
- 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 display in diamond dust over Crans-Montana, Switzerland.
Cumulus clouds with the lower one taking on the look of a scorpion, spotted over Vancouver, Washington, US
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Altocumulus perlucidus spotted by Anuja's son, Aarant Sarangi, over Shaheed Dweep (Neil Island), Andaman and Nicobar Islands, India
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A vivid and colourful sky at sunset near Conwy, looking towards Ynys Mon, Wales
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Asperitas with signs of lacunosus spotted over Sacramento, California, US
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Altocumulus perlucidus spotted over Rotterdam, The Netherlands
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Cirrocumulus undulatus with signs of lacunosus, spotted over Lake Stevens, Washington, US
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Remnants of contrails populate the sky, headed towards the horizon near Lexington, Massachusetts, US
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A blanket of clouds spotted over Trittenheim, Mosel, Germany
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A sunset sky that looks like a painting, accompanied by virga over San Francisco, California, US
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Altocumulus lenticularis duplicatus spotted over Ashcroft, British Columbia, Canada
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Virga spotted over Goodyear, Arizona, US
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Subtle crepuscular rays and shadows spotted over Mengelrode, Germany
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Sunset over Lake Hiawatha, Minneapolis, Minnesota, US
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The shadow of the plane's contrail guiding the way for it's flight over eastern Arizona, US
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A layer of Stratocumulus over Wiborg Beach, East Hampton, Long Island, New York, US
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