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Main Cloud Types
- Cumulus
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- 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
Crepuscular Rays over Spaceport City, United States
A solid layer of stratocumulus clouds following a storm that took place near Springfield, Ohio, US
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Cumulus fractus populating the evening sky over Manhattan, New York, US
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Cumulus fractus drifting below high level contrails over La Romieu, France
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Cumulus fractus over Satara, Maharashtra, India
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Iridescence over Norman, Oklahoma, US
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Supercilium, an unofficial classification for a cloud formation that resembles eyebrow-like features, spotted over Braithwaite, Cumbria, England
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Cumulus congestus that Sean says looks like a cloud that is smoking, spotted near Lighthouse Point, Florida, US
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Altocumulus over Temecula, California, US
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Cumulus fractus prior to sunset over Gondal, Gujarat, India
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Lacunosus over Beaconsfield, United States
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22-degree halo, which appears as sunlight is refracted through the ice crystals of thin layers of high clouds, such as Cirrostratus in this photograph. An added feature in this particular scenario is the reflection of the 22-degree halo in the layer of water on a beach on the Isle of Lewis and Harris, Scotland.
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Supercilium, an unofficial classification for a short-lived cloud formation that resembles eyebrow-like features, spotted over Dongnae-gu, Busan, South Korea
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Cirrostratus at sunset over Springfield, Ohio, US
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A mixed sky of altocumulus stratiformis undulates and cumulus clouds, accompanied by a vibrant color contrast over Boca Raton, Florida, US
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A time of reflection prior to sunrise over Tippecanoe Lake, Indiana, US
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