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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
A 'sea' of altocumulus over Micco, Florida, US
Fallstreak Hole (Cavum) spotted near the time of sunset, over Athens, Georgia, US
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Undulatus spotted over Xinzhuang, New Taipei City, Taiwan
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A view of Altocumulus stratiformis undulatus from above the clouds, off of the Atlantic Coast, near Daytona Beach, Florida, US
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Cumulus congestus spotted over West Esfahan, Iran
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Sunrise on a tranquil morning with an air temperature of 5 degrees Fahrenheit, near Vermontville, Adirondacks, New York, US
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Asperitas in advance of a storm system over Beuningen, The Netherlands
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An exquisite pattern at sunset near Waianae, Hawaii, US
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Altocumulus stratiformis undulatus, also known as a 'mackerel sky', spotted over Dehradun, Uttarakhand, India
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A dynamic and vivid sunset captured by Ted Burrowes near Lexington, Virginia, US
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Altocumulus undulatus spotted over Hamakua Coast, Hawaii, US
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Partial clearing following a morning storm near Falls Church, Virginia, US
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Signs of supercilium development spotted over Buckley, Flintshire, North Wales
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Iridescence spotted over Podłęże, Poland
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A mesmerizing mix of orange and red colours over Orange Grove, Texas, US
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Altocumulus stratiformis undulatus spotted during the late afternoon over Vermontville, Adirondacks, New York, US
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