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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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- Duplicatus
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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
Canada geese flying underneath a layer of Asperitas over North Dundas Township, Ontario, Canada
Altocumulus lenticularis spotted over Bridgnorth, Shropshire, England
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Cirrostratus undulatus spotted over Pic de Montaut in the French Pyrénées, near Sarrancolin, France
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A mesmerizing sunset viewed looking west towards the Southern Alps, from Christchurch, New Zealand
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Cirrocumulus with signs of lacunosus within its formation, spotted over Somerset, England
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A sun pillar spotted at sunrise, prior to the arrival of snow near Vermontville, Adirondacks, New York, US
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Altocumulus lenticularis spotted over Featherston, Wairarapa, New Zealand
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Virga over London, England
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Crepuscular rays and shadows from a setting sun, spotted over Stuttgart, Killesberg, Germany
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Asperitas, with the look of waves in the sky, spotted over Vermontville, Adirondacks, New York, US
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Altocumulus and its reflection in the convex mirror, spotted over Marinoa City, Fukuoka City, Japan
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A classic example of Virga, where precipitation evaporates when it falls into a layer of dry air, spotted over Stuttgart, Killesberg, Germany
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Crepuscular rays at sunrise over the Atlantic Ocean, near Boca Raton, Florida, US
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Cumulus congestus with a low cloud base, generating a reflection in the water and producing precipitation near Isle of Lewis, Scotland
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Moon Dogs, also known as paraselenae, a rare optical phenomenon, spotted along with a 22-degree lunar halo over Sumirago, Varese, Italy
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Sunset accompanied by mammatus (mamma) clouds, following heavy rain in Karachi, Pakistan
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