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Main Cloud Types
- Cumulus
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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
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- Lacunosus
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- Morning Glory Cloud
- Murus (Wall cloud)
- Mediocris
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- Noctilucent
- Pannus
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- 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
Sun Dog (Parhelion) spotted over Peel Castle, Isle of Man, British Crown Dependency
Signs of a partial circumzenithal arc, with red on the outside and violet on the inside, spotted over Folkstone, England
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Cirrostratus over Taiwan
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22-degree halo over Harlow Common, Essex, England
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Layers of clouds over Payson, Utah, US
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Sun Dog (Parhelion) spotted over Seoul, South Korea
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Cumulus and cirrostratus spotted over Camino, California, US
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A sun dog that also takes on the shape of a feather, spotted over East Suffolk, England
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Two coy fish swimming in the center of the sky, spotted over Goodyear, Arizona, US
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Moonlight amidst some cirrostratus, spotted over Cologne, Germany
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A cloud that looks like a giant bird with a huge tail soaring over Virginia Beach, Virginia, US
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Sunrise as captured by Joan Mello Corda over Orleans, Massachusetts, US
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A mixed sky at sunset, as seen from 36,000 feet above the ground, on a flight that was traversing across southern Japan
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Cirrostratus that appears to be somewhat attributable to prior contrails, spotted over the University of Washington, Seattle, Washington, US
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A view of what appears to Jacob to be a long neck turtle with a hat, spotted over Salir, Portugal
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A contrail 'intersecting' with a 22-degree halo over Galway, Ireland
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