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Main Cloud Types
- Cumulus
- Stratus
- Stratocumulus
- Altocumulus
- 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
Cumulus congestus spotted over Asbury Park, New Jersey, US
Cirrostratus and Stratocumulus sharing the sky over Alcester, Warwickshire, England
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Stratocumulus spotted over Liberty Hill, Texas, US
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A view of the sunset from in between cars, spotted over Marinoa City, Fukuoka City, Japan
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Signs of a corona spotted over Petaluma, California, US
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A mixed sky spotted by David's son, Craig West, over Heathrow Airport, London, England
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Overcast skies near Petaling Jaya, Malaysia
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Stratocumulus spotted over Neipu Township, Pingtung County, Taiwan
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Fluctus (Kelvin-Helmholtz) spotted along the horizon, near Crank, Merseyside, England
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Asperitas, with the look of waves in the sky, spotted over Vermontville, Adirondacks, New York, US
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Stratocumulus spotted over Lisboa, Portugal
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Crepuscular rays over Zingst, Ostsee, Germany
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Stratocumulus spotted from above, on a flight between Veracruz and Mexico City, Mexico
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Signs of supercilium spotted briefly near Charlo, Montana, US
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A formation of clouds approaching Marinatown Seaside Park, Fukuoka City, Japan
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A rainbow spotted over Budd Bay, Olympia, Washington, US
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