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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
Cumulus over Tullamore, United States.
A blanket of Altocumulus, along with a view of the Sun, spotted over Dernancourt, Adelaide, South Australia, Australia
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Signs of larger shaped lacunosus spotted over Gibsons, British Columbia, Canada
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Mammatus (Mamma) spotted during sunset over Lombard, Illinois, US
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Altocumulus lenticularis, which is more often observed near mountainous regions, can have a distinct UFO-shape to it, as spotted here along with iridescence, by Alexia's friend, Ted, over Lexington, Virginia, US
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A colourful sky over Quincy, Washington, US
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Signs of supercilium development spotted over Buckley, Flintshire, North Wales
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Stratocumulus spotted over Esfahan, Iran
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Iridescence spotted over Podłęże, Poland
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This cloud looked like a falling angel when John spotted it over Lusk Village, County Dublin, Ireland
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Altostratus spotted thirty minutes prior to sunrise, over Madison, Wisconsin, US
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Colourful sunrise over Erm, Netherlands
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Crepuscular rays spotted over Taoyuan, Taiwan
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A colourful sunrise over Brighton, Colorado, US
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Altocumulus spotted over Kaohsiung, Taiwan
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Sunset over Lisboa, Portugal
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