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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
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
A face in the clouds, spotted near Greenfield, California, US
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Altocumulus undulatus stretching across the sky at a high level, spotted over Charlottesville, Virginia, US
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Cumulus congestus, with both virga and falling precipitation in the distance, spotted over Taipei, Taiwan
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Lenticularis over Agustinos, Spain
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A ring of stratocumulus over Ferndale, Washington, US
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Virga over the open road in Eastern Washington, US
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Arcus, also known as a Shelf Cloud, ahead of a storm over Vakaloa, Tonga
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Sunset over the Adirondack Mountains, Vermontville, New York, US
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Altocumulus perlucidus over Esfahan, Iran
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Signs of asperitas in this storm over St Ives, Cornwall, England
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Cirrocumulus floccus undulatus over Hakata Station, Fukuoka City, Japan
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Tuba over Nishiki, Japan
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Cumulus fractus during an Autumn sunset over Seattle, Washington, US
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Altocumulus and stratocumulus, along with cumulus on the horizon, spotted near Ceara, Brazil
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Cumulonimbus incus, also known as an anvil cloud, as viewed from a flight between Cyprus and Israel
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