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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
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- Floccus
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- Fractus
- Homogenitus
- Horseshoe vortex
- Humilis
- Incus
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- Lacunosus
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- Morning Glory Cloud
- Murus (Wall cloud)
- Mediocris
- Nacreous
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- Noctilucent
- Pannus
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- 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 Morning Glory over Burketown Australia.
A storm system with Mammatus (Mamma) spotted at sunset from the Bonnie View Nature Sanctuary, Columbia, Missouri, US
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A vivid partial rainbow spotted over the Irpinia Hills near Mercogliano, Avellino, Italy
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Iridescence over Sacramento, California, US
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Crepuscular rays amidst the rain showers, spotted looking towards the Front Range, from the Denver International Airport, Denver Colorado, US
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Cirrus fibratus spotted over the Hudson River, New York, US
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A classic example of Mammatus (Mamma) spotted over Pedara, a village located on the southern slopes of Mount Etna in Sicily, Italy
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Remnants of a late afternoon pillow fight, as Steven describes, spotted over Denver, Colorado, US
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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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22-degree halo spotted over Sondershausen, Germany
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Cumulonimbus spotted by David's son, Craig West, over Callerton, near Newcastle upon Tyne, England
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Mammatus (Mamma) spotted over Piazza Università, Catania, Italia
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Crepuscular rays spotted during sunrise near Boca Raton, Florida, US
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A wisp of Cirrus fibratus amidst lower level Cumulus, spotted over Berlin, Germany
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A developing Cumulus congestus spotted over Lakka Bay, Paxos, Greece
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