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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
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- Morning Glory Cloud
- Murus (Wall cloud)
- Mediocris
- Nacreous
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- Noctilucent
- Pannus
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- 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 Circumhorizon Arc over Colorado, US.
Subtle reflections of cumulus along Green Lake, Seattle, Washington, US
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A view of cumulus to the north, near Modbury Heights, Adelaide, South Australia, Australia
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Cumulus congestus spotted by Bridget's mother during the evening near Passive, France
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Signs of mammatus (mamma) in this dissipating storm system, spotted in the "Hill Country Strong" area of Kerrville, Texas, US
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Altocumulus over Pittsburgh, Pennsylvania, US
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While cloud spotting at the local airport, Nancy was reminded of a feather with this particular formation over Corvallis, Oregon, US
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Remnants of a dissipating storm system over the Philippine Sea
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On an early summer afternoon, Junichi spotted what appeared to be clouds that were dancing over Hakata Station, Fukuoka City, Japan
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After arriving home following his work day, Daniel spotted this sky at sunset over Erlensee, Germany
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When Elizabeth was driving down a country road, a plethora of clouds appeared before her, near Green Valley, Arizona, US
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Signs of a developing storm spotted over Estrella Foothills, Arizona, US
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A soaring bird in the morning sky over Santa Rosa, California, US
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Cumulus congestus over Halifax, Nova Scotia, Canada
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A morning view of cumulus, spotted from 30,000 feet above eastern Washington, US
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Crepuscular rays at sunset over Batz sur Mer, Brittany, France
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