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Main Cloud Types
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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
Sunrise over Mahajeran, Iran
Signs of Fluctus (Kelvin-Helmholtz) spotted on a windy evening shortly after sunset near Taylor, Texas, US
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Stratus spotted near New Taipei City, Taiwan
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A view of the blue sky amidst the clouds, spotted on a windy day over Miaoli County, Taiwan
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Altocumulus perlucidus spotted over Taiwan
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Altocumulus lenticularis duplicatus, also known as 'pile d'assiettes', spotted over Croatia
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Crepuscular rays upon undulatus over Northwest Iran
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An 'e' out of the remnants of contrails, spotted at sunrise over Klein-Linden, Gießen, Germany
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Asperitas spotted over Sacramento, California, US
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Altocumulus lenticularis duplicatus, also known as 'pile d'assiettes', spotted over Mount Shasta, California, US
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'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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22-degree halo spotted over Twisp, Washington, US
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Stratocumulus over Esfahan, Iran
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Streaks of clouds spotted over Blairgowrie, Scotland
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A developing storm over Marina Town, Fukuoka City, Japan
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A mixed sky over the foothills of the Cevennes, near Sauve, France
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An exquisite sunset over Berkeley, California, US
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Supercilium developing in conjunction with dissipating Altocumulus lenticularis, spotted shortly before sunrise over Longmont, Colorado, US
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Cirrocumulus with some limited signs of lacunosus, spotted over Taiwan
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On the road towards stratocumulus clouds, spotted over Alentejo, Portugal
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Sunset with altocumulus clouds, with the shape reminding Carolyn of pince-nez glasses that were very popular in the late 19th century and early 20th century, spotted over Irvine, California, US
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Hubble Captures a “Lucky” Galaxy Alignment
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Signs of Fluctus (Kelvin-Helmholtz) spotted on a windy evening shortly after sunset near Taylor, Texas, US
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Stratus spotted near New Taipei City, Taiwan
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A view of the blue sky amidst the clouds, spotted on a windy day over Miaoli County, Taiwan
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Altocumulus perlucidus spotted over Taiwan
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Altocumulus lenticularis duplicatus, also known as 'pile d'assiettes', spotted over Croatia
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Crepuscular rays upon undulatus over Northwest Iran
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An 'e' out of the remnants of contrails, spotted at sunrise over Klein-Linden, Gießen, Germany
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Asperitas spotted over Sacramento, California, US
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Altocumulus lenticularis duplicatus, also known as 'pile d'assiettes', spotted over Mount Shasta, California, US
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'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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22-degree halo spotted over Twisp, Washington, US
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Stratocumulus over Esfahan, Iran
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Streaks of clouds spotted over Blairgowrie, Scotland
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A developing storm over Marina Town, Fukuoka City, Japan
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