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Main Cloud Types
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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
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- Lacunosus
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- Morning Glory Cloud
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- Mediocris
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- Noctilucent
- Pannus
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- Pileus
- Praecipitatio
- Radiatus
- Silvagenitus
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- '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 dynamic display of altocumulus lenticularis near Mt. Madison and Mt. Adams in the Northern Presidential Range, New Hampshire, US
Undulatus spotted over Freuchie, Fife, Scotland
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Cumulus congestus spotted from the north end of Lundy Island, England
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Preceding an intense storm system, signs of asperitas and lacunosus are seen here, spotted by Peter when looking toward the Southern Ocean, near Albany, Western Australia
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Iridescence upon a fish-shaped cloud over Mendip Hills, Somerset, England
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An elongated version of altocumulus lenticularis spotted over Mammoth Lakes, California, US
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A bouquet of altocumulus spotted by Anuja's friend, Tanya Sinha, from an altitude of 2,900 metres in the Himalayas, near Kareri, Himachal Pradesh, India
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Cirrostratus undulatus, which Janet saw as resembling a herringbone, spotted during the evening near Tavistock, Devon, England
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Stratocumulus lenticularis, a less common formation of lenticular clouds, which develop at a lower level of the atmosphere, spotted over Bairnsdale, Victoria, Australia
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Altocumulus lenticularis stacked one above the other, caused by wave motion in multiple humid layers of air, also known as "pile d'assiettes", spotted near the Cholla Cactus Garden, Joshua National Park, California, US
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Altocumulus stratiformis undulatus, also known as a "mackerel sky", spotted over Proserpine, Queensland, Australia
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A vivid display of mammatus (mamma) over College Station, Texas, US
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Undulatus spotted during the early morning over Devanahalli, Bangalore, India
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Altocumulus lenticularis spotted over Krzeszowice, Poland
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Undulatus spotted over Northern California, US
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Altocumulus undulatus over the Outback near Coober Pedy, Australia
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