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Main Cloud Types
- Cumulus
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- Altocumulus
- Altostratus
- Cirrus
- Cirrocumulus
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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
A sunset over San Francisco, US.
Limited crepuscular rays spotted at sunset over Taylor, Texas, US
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Signs of a Sun Dog (Parhelion) spotted over Lexington, Kentucky, US
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Following some light snow, a patch of blue appeared in the sky at sunset, near Falls Church, Virginia, US
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Upper level winds and subsequent wind shear creating a unique ring around the Cumulus clouds, spotted at sunset near Medford, Massachusetts, US
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Contrails in the early morning hours, spotted near Concord, California, US
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Sunrise over San Leandro, California, US
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Parhelic Circle amidst the optical phenomena spotted over New York City, New York, US
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Altostratus radiatus spotted at around mid-day over Little Green Farm, Bedford, Virginia, US
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Signs of supercilium that Yuyang thought resembled migrating birds, spotted over Dalian, Liaoning Province, China
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Altostratus spotted in the evening over Fujian, China
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A plethora of optical phenomena spotted overlooking the East Big Thompson River, near Loveland, Colorado, US
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Signs of a Circumzenithal Arc spotted over Philadelphia, Pennsylvania, US
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Dynamic iridescence spotted at sunrise over Brighton, Colorado, US
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Strong mid-level winds shaping a cumulus cloud into a doughnut of sorts, spotted over Montbéliard, France
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A wide range of contrails and dispersement as a result of varying atmospheric conditions, such as humidity, temperature, wind shear, and atmospheric and aircraft-induced turbulence. The clouds that are formed are done so via homogenitus and are dispersed wider in conditions of high humidity and high wind shear. This expansive display was captured by Ted Burrows over Lexington, Virginia, US.
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