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Main Cloud Types
- Cumulus
- Stratus
- Stratocumulus
- Altocumulus
- Altostratus
- Cirrus
- Cirrocumulus
- Cirrostratus
- Nimbostratus
- 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
Arcus, also known as a shelf cloud, marks the leading edge of a storm system near The Entrance North, New South Wales, Australia
An impressive view of a developing cumulonimbus from the top of the Partenio mountains looking towards the top of Monte Stella twenty kilometers away, spotted in Italy.
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A classic example of pileus forming over a developing cumulonimbus, spotted over Kilgore, Texas, US
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Mammatus (Mamma) spotted over Woden, Canberra, Australia
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Dual lightning strikes near Siler City, North Carolina, US
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A primary rainbow and a subtle secondary rainbow spotted during a storm near Mercogliano, Italy
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Asperitas over Carlyss, Louisiana, US
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A roll cloud, which is a form of an arcus cloud, spotted near the North West Shelf off of Western Australia
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Mamma (Mammatus) spotted over Las Vegas, Nevada, US
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Virga coming close to reaching the ground, which if it did, would be precipitation reaching the surface, stemming from a storm at sunset near Bigfork, Montana, US
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An expansive storm system with shreds of pannus, which are also known as scud clouds, forming below the cumulonimbus, as captured by Warren Keelan from the top of Mount Kiera in Wollongong, New South Wales, Australia
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Asperitas over Winnipeg, Manitoba, Canada
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Shreds of pannus, also known as scud clouds, can take on different shapes and sizes, and usually exists within the saturated environment beneath a storm. This example was spotted over Cotia, São Paulo, Brazil
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Mamma (Mammatus) over Mercogliano, Italy
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Vivid display of asperitas and lacunosus as a storm approached Ottawa, Canada
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Asperitas that preceded a thunderstorm over Almonte, Ontario, Canada
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