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Main Cloud Types
- Cumulus
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- 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
A reclusive corona over Napa, California, US.
Cumulus humilis populating the sky over Rocklin, California, US
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Altostratus winding through the sky over Estrella Foothills, Arizona, US
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Sunrise over Fancy Farm, Kentucky, US
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Sunset over Thornham, Norfolk, England
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Cumulus dotting the sky over Hakata Bay, near Nokonoshima Island, Fukuoka City, Japan
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An early morning view of Asperitas over Mar, Cantabria, Spain
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Fluctus (Kelvin-Helmholtz) spotted over Cascade, Idaho, US
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Iridescence spotted over Antwerp, Belgium
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A criss-crossing of contrails spotted by Haruko's friend, Christina Delius, at sunset over Berlin, Germany
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Fog along the hillside, spotted beneath a vibrant sky over Mercogliano, Avellino, Italy
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Altocumulus spotted over Leiden, The Netherlands
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Altocumulus stratiformis radiatus spotted over Aurora, Colorado, US
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A few errant Cumulus fractus spotted over Canyonlands National Park, Utah, US
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Sunset over Pelican Point, Newport Beach, California, US
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Lunar 22-degree halo spotted over Vancouver, Washington, US
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