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Main Cloud Types
- Cumulus
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- Stratocumulus
- Altocumulus
- Altostratus
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- 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 display of noctilucent clouds over Sumirago, Varese, Italy.
Sings of a partial lunar halo in the night sky over Seattle, Washington, US
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A storm on the horizon near Villafranca di Verona, Italy
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A primary and secondary rainbow over Bluff, Utah, US
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22-degree halo over Beijing, China
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Sunlight reflecting off of altocumulus clouds over Perak, Malaysia
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Fluctus (Kelvin-Helmholtz) near the horizon, spotted over North Dundas County, Ontario, Canada
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Altocumulus stratiformis radiatus over Rufford, West Lancashire, England
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Appreciating the view during a rest stop along the Petrified Dunes Trail in Snow Canyon State Park, Utah, US
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22-degree halo accompanied by contrails over Reigate, England
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Fluctus (Kelvin-Helmholtz) spotted over Waalwijk, Netherlands
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22-degree halo over Esfahan, Iran
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Iridescence over Northern California, US
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Waves in the sky, spotted over Taipei, Taiwan
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Virga over São Paulo City, Brazil
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Sun Pillar spotted at sunset over the Pentland Hills towards East Kip, near Leadburn, Midlothian, Scotland
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