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Main Cloud Types
- Cumulus
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- Stratocumulus
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- 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
Arcus, also known as a shelf cloud, ushers in precipitation from this storm over New Brighton Beach, Christchurch, New Zealand
A colorful sky filled with altocumulus at sunset over Hilton Head, South Carolina, US
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Signs of lacunosus over Montana, US
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Cumulus congestus following a rainy morning near Oakland, California, US
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Sunset over Chilwell, Nottingham, England
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Altocumulus over Sanxia District, New Taipei City, Taiwan
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Looking west from out of a window on the 16th floor, Gregory captures this sunset from the Upper West Side, Manhattan, New York, US
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Stratocumulus over Charlotte, Michigan, US
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Altocumulus stratiformis undulatus, as seen from above the clouds, on a flight over Fort Wayne Indiana, US
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Asperitas over Carlyss, Louisiana, US
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A storm system over Antelope Valley near Lancaster, California, US
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After three days of whiteout snow and wind, Darren shared that this was the view from the top of the chair lift, with a classic example of an altocumulus lenticularis spotted over Flaine, France.
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Cumulus congestus as seen from above the clouds on a flight that was about thirty minutes from landing in Louisiana, US
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Sunrise over Mission Mountain near Charlo, Montana, US
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Fallstreak Hole (Cavum) with a "tail" that Nigel said extended beyond what was captured in this photograph by approximately three times the length seen here, spotted over Newton upon Rawcliffe, Yorkshire, England.
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