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Main Cloud Types
- Cumulus
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- Cirrocumulus
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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
- Lenticularis
- Mamma
- Morning Glory Cloud
- Murus (Wall cloud)
- Mediocris
- Nacreous
- Nebulosus
- 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
Cumulus and Cirrus sharing the sky over Reigate, England
Nimbostratus moving in over Kooh Sorkh (Red Mountain), Shiraz, Iran
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A mixture of cloud formations over Kemerovo, Russia
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Cumulus congestus over an inlet in Taiwan
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A storm system over Yilan, Taiwan
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Cumulonimbus over Bourg-La-Reine, France
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Waving hello from the sky, near Avon, Indiana, US
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Cumulus fractus and Stratocumulus over Horley, England
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Cirrocumulus stratiformis over Brisbane, Australia
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Cirrocumulus undulatus over Monte Porzio Catone, Rome, Italy
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A developing thunderstorm, as reported by Paula, over the Isle of Wight, England
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Cumulus towers dissipating at the end of day with Altocumulus and Altostratus above and beyond.
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Corona over San Antonio Del Mar, Mexico
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A colorful display amidst the Stratocumulus clouds over Vermontville, New York, US
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Cumulus congestus amidst the blue sky over Omaha, Nebraska, US
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Sunset over historic Windmill Island Gardens, Holland, Michigan, US
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