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Main Cloud Types
- Cumulus
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- Altocumulus
- Altostratus
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- Cirrocumulus
- Cirrostratus
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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 lenticularis formation displaying intense iridescence over Mount Manaslu in the Himalayas. (Also seen is the formation we are proposing as a new cloud feature, Supercilium or eyebrow cloud)
A picturesque reflection of the story in the sky, spotted over Stephens Lake Park, Columbia, Missouri, US
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Monsoonal storm system at sunset, east of the Santa Catalina Mountains, Oro Valley, Arizona, US
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Fluctus (Kelvin-Helmholtz), upon which Conrad described the experience of spotting them as being deeply in awe and grateful for this uplifting vision, during a morning hike in the Canton of Aargau Jura mountains, above Bürensteig, near Brugg, Switzerland.
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A partial rainbow near Brasstown Bald, Georgia, US
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A face in the clouds, spotted over Easton, Pennsylvania, US
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A variety of altocumulus over Magnuson Park, Seattle, Washington, US
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A storm cell that kept its shape and made its way from the Bahamas over to Boca Raton, Florida, US
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Crepuscular rays shining through altocumulus perlucidus over Khomeynishahr City, Esfahan, Iran
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A solitary altocumulus lenticularis spotted by Beatrice's daughter, Ineke Vereecken, while visiting Isle of Skye, Scotland
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Crepuscular rays with early signs of fluctus (Kelvin-Helmholtz), spotted over St-Amandsberg, Belgium
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Cirrus spissatus over the Black Forest mountainous region, near Freiburg, Germany
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Subtle signs of asperitas and lacunosus spotted over Isle of Lewis, Scotland
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As Jennie went on a walk, she looked up and wondered how this beautiful feather ended up in the sky, which she spotted over Victoria, British Columbia, Canada.
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Sunset over the Bonnie View Nature Sanctuary, Columbia, Missouri, US
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Cumulus over Ashland, Virginia, US
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