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Main Cloud Types
- Cumulus
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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
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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
The icy slopes below, mirror the sky above the the Dolomite mountains, in the Alpe di Siusi area of the South Tyrol province of Italy.
Altocumulus with signs of larger scale lacunosus, spotted over Lancaster, Pennsylvania, US
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Lacunosus spotted over Hennef, Germany
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A sky filled with cirrocumulus and an array of colours brought forth by iridescence, spotted over Mirabelles-aux-Baronnies, Drome, France
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A shadow of a contrail spotted over Erm, The Netherlands
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A rabbit running in the sky, spotted over Baltimore, Maryland, US
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Altocumulus stratiformis radiatus over Westdorf, Baltrum, Germany
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A contrail shadow upon altocumulus clouds, spotted over Thedinghausen, near Bremen, Germany
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A collection of cumulus clouds spotted over Meinohama Fishing Port, Fukuoka City, Japan
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Cumulonimbus with signs of mammatus (mamma) and pannus, spotted over Bigfork, Montana, US
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Contrails over Sanxia, New Taipei City, Taiwan
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Altocumulus floccus spotted over Esfahan, Iran
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Fallstreak Hole (Cavum) spotted over Northern Scotland
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An autumn sunrise near "The Big Tree" in Boone County, Missouri, US
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A vibrant sunrise over Vermontville, Adirondacks, New York, US
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Cumulus congestus spotted over Taiwan
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