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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
Two examples of Cumulonimbus incus, also known as anvils, spotted along the horizon, associated with dissipating storm systems near Watchet, Somerset, England
Cumulonimbus over Brisbane, Queensland, Australia
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Primary and secondary bows spotted over Redcliffs, McCormacks Bay, Christchurch, New Zealand
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A red light, appearing to indicate foreboding skies ahead, with mammatus (mamma) spotted at sunset over Arlington, Virginia, US
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A classic example of mammatus (mamma) spotted over Terrassa, Barcelona, Spain
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A vivid primary rainbow along with a subtle secondary bow, spotted shortly before sunset over Sumirago, Varese, Italy
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A panoramic view of primary and secondary bows over Dartmoor, Devon, England
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Primary and secondary bows with precipitation falling in the distance, spotted near Vermontville, Adirondacks, New York, US
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A rainbow spotted from above the ground, near Beauvais, France
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A notable storm system accompanied by pileus, spotted from a regional train just north of Sydney, Australia
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A rainbow, created by sunlight that interacts with water droplets through the process of refraction, reflection, and dispersion, spotted over Forestville, California, US
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Lightning stretching across the sky, spotted near Bluff, Utah, US
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A low lying stratocumulus lenticularis spotted near Minchinhampton, Gloucestershire, England
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Mammatus (Mamma) spotted at sunset over Mercogliano, Italy
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Mammatus (Mamma) spotted over Sourton Down, Okehampton, England
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A vivid rainbow spotted over Wellington Harbour, New Zealand
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