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Main Cloud Types
- Cumulus
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- Stratocumulus
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- Altostratus
- Cirrus
- Cirrocumulus
- Cirrostratus
- 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
A sighting of asperitas clouds over Hiawatha (just outside of Cedar Rapids), Iowa, US.
An exquisite pattern at sunset near Waianae, Hawaii, US
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Cap Cloud spotted over Mt. Shasta, California, US
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Altocumulus perlucidus spotted over Hilo, Hawaii, US
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Altocumulus stratiformis undulatus, also known as a 'mackerel sky', spotted over Dehradun, Uttarakhand, India
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An expansive view from atop Gemsstock Mountain Peak, Andermatt, Switzerland
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Cumulus fractus spotted over West Esfahan, Iran
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A layer of Stratocumulus over Twisp, Washington, US
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A swirl of clouds spotted above an exact plaster replica of the statue Aphrodite of Milos, in Milos, Greece
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Sunset with mammatus (mamma) and lightning, spotted over Daytona Beach, Florida, US
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A dynamic and vivid sunset near Lexington, Virginia, US
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Altocumulus perlucidus spotted over Sanxia, New Taipei City, Taiwan
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Sunrise over Central Province, Iran
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Cumulus spotted over Modbury Heights, Adelaide, South Australia, Australia
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Mid-morning iridescence over Lebec, California, US
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Winter solstice sky over Rocky Mount, Virginia, US
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