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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
- 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
Sunset over New Taipei City, Taiwan
A colourful depiction of Altocumulus stratiformis spotted during sunrise over Penally, Pembrokeshire, Wales
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A colourful sky over North Dundas Township, Ontario, Canada
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Undulatus spotted over Conwy, North Wales
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A dissipating storm with virga, spotted over Point, Isle of Lewis, Scotland
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Undulatus spotted at sunset over Torrejón de Ardoz, Spain
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A reflection of an hypnotic sky, spotted by Bill's granddaughter on the shore of Lake Michigan, US
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Sunset following a special weekend for Zorah, spotted near Springfield, Illinois, US
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Remnants of a contrail over central Indiana, US
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Cumulus fractus that took on the look of a palm tree, spotted over Southern Alberta, Canada
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A mixed sky over Piperdam, near Dundee, Scotland
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A colourful sky over Taipei, Taiwan
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Cotton candy on a rainbow stick, spotted over Vermontville, Adirondacks, New York, US
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An evening view over the iconic Redrocks Amphitheatre, Morrison, Colorado, US
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Sunset over Sant Adrià de Besòs, Catalonia, Spain
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A serene sunrise over Twin Lakes Recreation Area, Columbia, Missouri, US
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