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Main Cloud Types
- Cumulus
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Other Clouds
- Arcus
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- Cap / banner clouds
- Capillatus
- Castellanus
- Cataractagenitus
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- Cavum (Fallstreak hole)
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- Duplicatus
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- Fractus
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- Lacunosus
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- Morning Glory Cloud
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- Mediocris
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- Noctilucent
- Pannus
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- 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
Cumulus humilis spotted during the late afternoon while visiting the lavender fields at Banstead, Surrey, England
Asperitas spotted prior to what was rain for the rest of the day, seen from the I-35 highway on the road to Minneapolis, Minnesota, US
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Cumulus congestus that resembles a duck, spotted over Gwangju, South Korea
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Altocumulus lenticularis over Taipei, Taiwan
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Undulatus over Oxford, England
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Horseshoe vortex spotted over Leuven, Belgium
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Developing storm system over Mobile, Alabama, US
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A plethora of cirrocumulus over North Devon, England
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Fluctus (Kelvin-Helmholtz) spotted over Seattle, Washington, US
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Sings of mammatus (mamma) over Porvoo, Finland
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Altocumulus lenticularis spotted by a friend, Martin Philips, over Hungerford, Berkshire, England
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A mesmerizing sunset over Charlo, Montana, US
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A mixed sky over Georgetown, Texas, US
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A developing cumulonimbus spotted at 34,000 feet over western Oklahoma, US
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An oyster or a fish spotted at sunset over Albuquerque, New Mexico, US
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Asperitas over Torhout, West Flanders, Belgium
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