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Main Cloud Types
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- Cumulonimbus
Other Clouds
- Arcus
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- Cap / banner clouds
- Capillatus
- Castellanus
- Cataractagenitus
- Cauda (Tail cloud)
- Cavum (Fallstreak hole)
- Congestus
- Contrail (homogenitus)
- Duplicatus
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- Flammagenitus (Pyrocumulus)
- Floccus
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- Fractus
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- Mediocris
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- Noctilucent
- Pannus
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- Pileus
- Praecipitatio
- Radiatus
- Silvagenitus
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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
Sunrise over Mahajeran, Iran
'Cotton Candy' clouds with iridescence, spotted over Medford, Massachusetts, US
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Cumulus congestus spotted in the morning over Dernancourt, Adelaide, South Australia, Australia
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A developing storm over Marina Town, Fukuoka City, Japan
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Cumulus congestus which ushered in rain showers over Ormskirk, Lancashire, England
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Cumulus spotted on a late spring morning over Modbury Heights, Adelaide, South Australia, Australia
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Birds flying beneath cirrostratus, spotted over Esfahan, Iran
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Crepuscular rays and iridescence spotted over Mahajeran, Northwest Iran
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Altocumulus and Cumulus fractus spotted over Zhongzheng District, Taipei City, Taiwan
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A gap in cloud cover just beyond the edge of cumulus congestus, spotted over San Juan, Puerto Rico
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Fluctus (Kelvin-Helmholtz) spotted over the Rockies, near Brighton, Colorado, US
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Fog spotted by Alina Payne, from the Settignano Hills over the valley in Florence, Italy
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A classic example of a rare horseshoe vortex spotted over Roanoke, Virginia, US
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Crepuscular rays over Esfahan, Iran
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Pyrocumulus cloud in its early development, as spotted here by Linda's niece, is the result of Volcán de Fuego, one of Central America's most active volcanoes, located near Antigua, Guatemala
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Cumulus spotted over Zhongzheng District, Taipei City, Taiwan
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