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Main Cloud Types
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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
- 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
Virga over the open road in Eastern Washington, US
A mix of clouds on the evening before a storm system moved in over Seattle, Washington, US
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Cumulus in various stages of development, as seen from the Golden Gallery at the top of St. Paul's Cathedral, London, England
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Altocumulus radiatus over Coaley Peak, Gloucestershire, England
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22-degree halo accompanied by what appears to be a subtle tangent arc, spotted over Leavenworth, Washington, US
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Cumulus cloud streets as seen from above the clouds, spotted over central Minnesota, US
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A colorful sky over Gunflint Lake, Cook County, Minnesota, US
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Iridescence over Oahu, Hawaii, US
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A storm system in various stages of development, spotted near Belgrade, Montana, US
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Sunset as viewed from Whidbey Island, Washington, US
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Virga over Cle Elum, Washington, US
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Undulatus radiatus at sunrise over Portland, Oregon, US
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Stratocumulus near Kaena Point, Oahu, Hawaii, US
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Cumulus fractus being illuminated by the rays of the sun, near Livingston, Montana, US
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Cumulus over fields of canola plants in bloom, in the Palouse region of southeastern Washington, US
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Pannus associated with a nearby storm over Livingston, Montana, US
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