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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 a 22-degree halo, wherein Robyn described her "feet were off the ground, spying the beauty of nature", spotted over Goodyear, Arizona, US
Sun Dogs (Parhelia) amidst a vibrant sky over Montevergine, Italy
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Appreciating the sunset and picturesque clouds over San Francisco Bay, California, US
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As Rachel observed, someone pulled a rabbit out of the sunset, near North Dundas Township, Ontario, Canada
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A vibrant sunset over Oceanside, California, US
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A gull enjoying the spectacular view over Princess Bay, Wellington, New Zealand
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Sunset view looking across the northwest arm of Halifax Harbour, Halifax, Nova Scotia, Canada
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Altocumululs lenticularis with some vibrant colours throughout the sky, spotted over Albuquerque, New Mexico, US
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Sunset near Vermontville, Adirondacks, New York, US
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Sun Pillar over El Paso, Texas, US
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Altocumulus lenticularis over Western Iran
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A sky filled with colour over Reutlingen, Germany
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Sunrise over Boca Raton, Florida, US
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A plethora of contrails spotted near Pittsboro, North Carolina, US
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Fluctus (Kelvin-Helmholtz) developing at sunrise over Madison, Wisconsin, US
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A variety of altocumulus and altostratus near Canutillo, Texas, US
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