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Main Cloud Types
- Cumulus
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- Altostratus
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- 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
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A beautiful juxtaposition of the sky and nature, taken by Modestino in memory of his wife, Rossella, who recently passed away. Modestino describes this photograph as "evocative", which was taken at the cemetery in Mercogliano, Italy.
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22-degree halo over Bigfork, Montana, US
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22-degree halo over Barbados, West Indies.
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A 22-degree halo formed by Cirrostratus cloud and some cloud iridescence formed by Cumulus fractus, spotted over Zoetermeer, South Holland, Netherlands.
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A lunar halo over the Sierra de las Nieves national Park in Tolox, Andalucia. Spain.
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A lunar corona over Marcinelle in Belgium.
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A 22° lunar halo over Sumirago, Varese, Italy.
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Arcs and Halos over Krauma Geothermal pools, Iceland.
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A halo and sundogs over Milwaukee, US.
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A display of arcs and halos over Minnesota, US.
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A sunset over Akranes, Iceland.
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