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Main Cloud Types
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Other Clouds
- Arcus
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- Cap / banner clouds
- Capillatus
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- Cataractagenitus
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- Cavum (Fallstreak hole)
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- Contrail (homogenitus)
- Duplicatus
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- Fibratus
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- Fractus
- Homogenitus
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- Lacunosus
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- Morning Glory Cloud
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- Mediocris
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- Pileus
- Praecipitatio
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- '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 medley of lenticularis over Pico Island, the Azores.
A dual lightning strike captured via a photograph with a 4-second exposure during twilight over Bluff, Utah, US
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A dissipating cumulonimbus incus spotted over Scottsdale, Arizona, US
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A storm system with signs of asperitas over North Dundas Township, Ontario, Canada
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Morning fog along a glacier in southwest Greenland
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A grand display of altocumulus lenticularis spotted over Kvaløya, Norway
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Fluctus (Kelvin-Helmholtz), a short-lived formation, was spotted amidst windy conditions over Vieste, Puglia, Italy
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Cumulus spotted over Taipei, Taiwan
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A layer of stratus visible at sunset, which Tim highlights as giving an illusion that there is suddenly a mountain range to the west, spotted near West Cork, Ireland
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Remnants of contrails in the morning sky over Falls Church, Virginia, US
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Returning from a weekend in the country, Frits spotted this evening sky, with crepuscular rays in the distance, near Gent Zwijnaarde, Belgium
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A blanket of altocumulus spotted from the Great Wall of China, near the Changping District, Beijing, China
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A view which, as Roger points out, allows for significant permutations of skies and clouds, and one that late in the day is not unlike an artist's palette, spotted from Gaw Hill, Ormskirk, England.
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A range of colours and clouds spotted over Taiwan
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Altocumulus perlucidus spotted over San Francisco, California, US
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A plethora of contrails illuminated by the full moon, spotted over Covarrubias, Burgos, Spain
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