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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
Sunrise accompanied by what looks to be a heart shape opening in the altocumulus cloud formation, spotted near Charlo, Montana, US
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On a crisp day with a temperature of -16 degrees Celsius (3 degrees Fahrenheit), sea smoke, a type of fog, developed as a result of the existence of a very cold and still air mass over water that is comparatively warm, as seen here near Nesbyen, Norway.
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A unique view of a rainbow from above, with an angle away from the sun and a region of available airborne water droplets, spotted on Mount Coigach, Northwestern Highlands, Scotland
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Cloudbow that disappeared very quickly, spotted over Lyme Park, Disley, Cheshire, England
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Altocumulus undulatus spotted over La Caleta, Tenerife, Spain
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Cumulus over Alto, United States
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Sunset with cumulus fractus providing the backdrop over Odo Yacht Harbor, Fukuoka City, Japan
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A storm system with a developing wall cloud (murus), spotted while driving towards the coast from Granada to Motril, Andalusia, Spain
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A view of cumulus congestus over Mahajeran, Northwest Iran
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Stratocumulus over Great Falls National Park, Virginia, US
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Altocumulus lenticularis at sunset over Germany
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Altocumulus spotted over Jilin Province, China
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Altocumulus above a layer of stratus over Nantwich, Cheshire, England
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Fog over Wendersreuth, Germany
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A colorful sunset over El Dorado Hills, California, US
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