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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)
- Congestus
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- Duplicatus
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- Flammagenitus (Pyrocumulus)
- Floccus
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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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- 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 sparkling display of Cirrus over Dubbo, New south Wales, Australia.
Intense rainbow action spotted over Durham, North Carolina, US, including a primary bow, a secondary bow, supernumerary bows (tiny fringes inside the primary bow) and Alexander’s Dark Band (the darker sky between the bows).
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Altocumulus illuminated by the rays of sunrise with lower Stratocumulus lenticularis formations in shadow over Whiteface Mountain, Adirondack Mountains, NY, US.
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Altocumulus lacunosus spotted in the evening over Baltimore, Maryland, US.
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Altocumulus undulatus clouds spotted over Baltimore, Maryland, US.
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Moonlit Stratocumulus undulatus clouds spotted over Brisbane Water, Woy Woy, NSW, Australia.
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Fair-weather Cumulus spotted over Gross Valley in the Blue Mountains, New South Wales, Australia.
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The variety of the high cloud Cirrocumulus known as lacunosus, which is characterised by a lattice of holes.
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A UFO-shaped Altocumulus lenticularis formation, and eyebrow-like features, with the unofficial name supercilium, forming in the turbulent air in front, spotted over Palm Springs, California, US.
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Asperitas over Winsted, United States
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Altocumulus undulatus over East River, New York City, US.
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A 22-degree halo formed by Cirrostratus cloud and some cloud iridescence formed by Cumulus fractus, spotted over Zoetermeer, South Holland, Netherlands.
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Fallstreak Hole over Wittmann, United States
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A spring lamb spotted over Edinburgh, Scotland.
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Mamma cloud features appearing on the anvil of a Cumulonimbus at sunset.
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Asperitas clouds over northwest Connecticut, US.
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