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Main Cloud Types
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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
- Horseshoe vortex
- Humilis
- Incus
- Intortus
- Lacunosus
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- Morning Glory Cloud
- Murus (Wall cloud)
- Mediocris
- Nacreous
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- Noctilucent
- Pannus
- Perlucidus
- 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
Altocumulus over Temecula, California, US
Altocumulus spotted shortly after sunrise over Toyohama, Fukuoka City, Japan
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Altocumulus with signs of undulatus and lacunosus, spotted at sunset over Guna, Madhya Pradesh, India
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A layer of Stratus approaching Castroville, California, US
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Virga with signs of Mammatus (Mamma) spotted near Bristol, England
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Cirrocumulus coupled with the remnants of contrails, spotted over Arlington, Washington, US
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A mixed sky over Swindon, Wiltshire, England
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Undulatus spotted during the late afternoon over São Paulo City, Brazil
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Undulatus spotted over a megalithic site near Carnac, France
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Asperitas spotted within a storm that was heading east, while Celia and her father were traveling westbound on I-70, near Wentzville, Missouri, US
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Altocumulus undulatus with iridescence, spotted over Krzeszowice, Poland
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Stratus fractus hugging the mountainside as the sky above began to clear near Beddgelert, North Wales
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Mammatus (Mamma) and signs of Asperitas spotted over Sadorus, Illinois, US
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A thin variety of Altocumulus lenticularis spotted over Poelkapelle, Belgium
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Altocumulus lenticularis spotted over Winthrop, Washington, US
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Undulatus spotted over Conwy, North Wales
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