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
Signs of supercilium, an unofficial classification for a cloud formation that resembles eyebrow-like features, spotted over Brighton, Colorado, US
Cumulus congestus with some signs of supercilium spotted over Dongnae-gu, Busan, South Korea
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Altocumulus stratiformis and lenticularis, with signs of supercilium in the distance, spotted over Malakwa, British Columbia, Canada
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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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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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Supercilium, an unofficial classification for a short-lived cloud formation that resembles eyebrow-like features, spotted over Keswick, Cumbria, England
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Altocumulus lenticularis in multiple variations, as well as in a stacked form, which is known as Pile d'assiettes, over the North Lake District, Cumbria, England.
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Cloud formation that resembles supercillium, an unofficial term representing eyebrow-like features, over the Westfjords, Iceland
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Lacunosus, coupled with what appears to be the development of 'Supercilium' (unofficial term), which are short-lived thin wisps of clouds appearing to tumble and break in a turbulent way in airflow over, and to the immediate lee of, mountain peaks. Spotted near Acadia National Park's Cadillac Mountain in Maine, US.
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A UFO-shaped Altocumulus lenticularis formation, and eyebrow-like features, with the unofficial name supercilium, forming in the turbulent air in front, spotted over Palm Springs, California, US.
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Altocumulus lenticularis spotted over Franklin County, Alabama, US, as well as some of the cloud holes called lacunosus and some of the eyebrow-like features that becoming unofficially known as 'supercilium'.
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