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Main Cloud Types
- Cumulus
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- Stratocumulus
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- Altostratus
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- Cirrocumulus
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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 matching of the sky and landscape, near Seligman, Arizona, US
Dramatic colours in the sky over Constantia, Cape Town, South Africa
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On a family road trip at dusk, listening to Jimmy Hendrix's "Purple Haze", Reven looked up to see sinewy windmills on their tiptoes, whipping the lilac clouds into tiny cloudlettes, near the Altamont Pass Wind Farm, California, US.
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Sunset along the beach at Milford on Sea, Hampshire, England
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A view of the sunrise over the US Capitol from the National Mall, Washington D.C., US
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Sunrise over San Leandro, California, US
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Anti-crepuscular rays viewed when looking east during sunset over Phnom Penh, Cambodia
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Cumulus congestus over the Pacific Ocean, spotted near Hualien, Taiwan
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Driving home, Heidi saw this cloud descending into the sunlight, over Vermont, US
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Cumulus congestus as seen from the gothic cemetery of Comillas, Spain
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A mosaic of clouds and colour over Jhargram, West Bengal, India
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Virga at sunset, along with a subtle sun pillar, spotted near Ardrossan, North Ayrshire, Scotland
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A peaceful view from Golden Gardens Beach, Seattle, Washington, US
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Remnants of what appears to be a contrail over Karema, New Zealand
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A vibrant sunrise over Brighton, Colorado, US
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A diamond shape in the sky, spotted over Sittingbourne, Kent, England
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