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Main Cloud Types
- Cumulus
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- Stratocumulus
- Altocumulus
- Altostratus
- Cirrus
- Cirrocumulus
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- Nimbostratus
- 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
An energy filled sky over Chaparral, New Mexico, US.
Cumulus congestus towering upwards toward potential cumulonimbus development over Springfield Township, Pennsylvania, US.
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Fluctus (Kelvin-Helmholtz) formation over Bigfork, Montana, US
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22-degree lunar halo over Maitland, Australia
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Lacunosus over Cotia, São Paulo, Brazil
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Cirrus in the distance over Ryazan, Russia
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Supporting the base cloud layer near Happisburgh, Norfolk, England
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A bike ride to the clouds near Dutchess County, New York, US
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Cumulus clouds in various stages of development over Witchampton, Dorset, England
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Radiatus over Eldorado at Santa Fe, United States
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A rising Cumulus congestus over Chungju, Korea
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Fluctus (Kelvin-Helmholtz) over Seoul, Korea
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A "dog" admiring the other clouds in the sky over Erm, Netherlands
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An asperitas formation near Mt. Ventoux in Vaucluse, France
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Storm system near Bristol, England
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Cumulus congestus over Horley, England
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