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Main Cloud Types
- Cumulus
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- 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
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- Morning Glory Cloud
- Murus (Wall cloud)
- Mediocris
- Nacreous
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- 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
Crepuscular rays emanating from behind Cumulus clouds, spotted over Viella, Catalonia, Spain
An isolated rain shower with crepuscular rays from the morning sun in the background, spotted over Columbia, Missouri, US
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Signs of subtle anti-crepuscular rays observed at sunset on a flight approaching Dulles International Airport, Northern Virginia, US
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A mirror reflection of a sunset, over Twin Lakes Recreation Area, Columbia, Missouri, US
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Crepuscular rays spotted over Glenelg Beach, South Australia, Australia
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Crepuscular rays emanating through an opening in the cloud layer, spotted over Sherman, Illinois, US
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Subtle crepuscular rays visible during sunset over Sumirago, Varese, Italy
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Crepuscular rays spotted in the morning hours over Madison, Wisconsin, US
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Crepuscular rays spotted over Stroud, Gloucestershire, England
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Stratocumulus with signs of iridescence and subtle crepuscular rays, spotted over Vuosaari, Finland
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Crepuscular rays spotted after a rainy day in central Indiana, US
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Subtle crepuscular rays and iridescence spotted over the Carneddau Range, Conwy, Wales
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A colourful sunset over Conwy, North Wales
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The sun peeking over the clouds and casting shadows during sunrise near Boca Raton, Florida, US
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Crepuscular rays and shadows over North Lakes, Queensland, Australia
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Crepuscular rays and shadows from a setting sun, spotted over Stuttgart, Killesberg, Germany
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