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 spotted briefly near Charlo, Montana, US
Signs of supercilium, an unofficial classification for a cloud formation that resembles eyebrow-like features, spotted off the San Francisco coast, approximately five miles from Stinson Beach, California, US
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Supercilium are short-lived cloud formations that resemble eyebrow-like features and appear in turbulent airflow over, and to the immediate lee of, steep mountain peaks, as spotted here over Santa Barbara, California, US
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Supercilium in the foreground, accompanied by Fluctus (Kelvin-Helmholtz) near the horizon and Altocumulus lenticularis in between, spotted over the mountains during sunset over Wyoming, US
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Signs of supercilium spotted near Helena, Montana, US
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Signs of supercilium that Yuyang thought resembled migrating birds, spotted over Dalian, Liaoning Province, China
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Signs of Supercilium spotted shortly after sunrise over Madison, Wisconsin, US
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Signs of supercilium and lacunosus spotted near Mercogliano, Italy
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Signs of Supercilium spotted over the Southern Rockies, near Walsenburg, Colorado, US
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Signs of supercilium spotted over Brighton, Colorado, US
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Signs of supercilium development spotted over Buckley, Flintshire, North Wales
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Sunset with subtle signs of supercilium spotted over Crank, Merseyside, England
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Supercilium developing in conjunction with dissipating Altocumulus lenticularis, spotted shortly before sunrise over Longmont, Colorado, US
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Signs of supercilium spotted over Mt. Ventoux, near Mirabelles-aux-Baronnies, France
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Altocumulus lenticularis with the eyebrow features we’re calling ‘supercilium’ spotted by a friend of Chris Adams (Member 58,590) over Mount Jungfrau, Switzerland
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Subtle signs of altocumulus lenticularis and potentially supercilium, spotted behind passing cumulus over South Melbourne, Victoria, Australia
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