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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
Altocumulus and crepuscular rays spotted looking west over the New Jersey Palisades in the lower Hudson Valley, Westchester, New York, US
Reflections of an elongated Altocumulus lenticularis spotted over Antelope Valley, California, US
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Altocumulus lenticularis spotted over Northern Iran
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Cumulus congestus developing on the horizon on a hot day at Mooloolaba Beach, Queensland, Australia
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Crepuscular rays over the Coast Range Mountains, spotted from the top of Mount Pisgah, Oregon, US
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Cumulonimbus with an arcus outlining the leading edge of the storm, accompanied by pannus, spotted by John's friend, Will Werner, in Brazil
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Cumulus spotted over the Mayan ruins at Aké, Yucatan, Mexico
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The sky presenting itself as a painting, observed over Stoke Hammond, Buckinghamshire, England
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Cumulonimbus spotted over Eastern Shore of Chesapeake Bay, Maryland, US
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Sunrise on New Year's Eve, over Twisp, Washington, US
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Signs of a distrail from a circling airplane spotted over Jiangsu, China
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Dense fog over the Salish Sea, with a myriad of clouds lit up by the setting sun, spotted while looking west towards Vancouver Island, from Sunshine Coast, British Columbia, Canada
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Fallstreak Hole (Cavum) spotted over Sedro Woolley, Washington, US
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Altocumulus perlucidus spotted over Fort Bragg, California, US
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A 'sea' of altocumulus over Micco, Florida, US
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An exquisite sunset over the Puget Sound, spotted from Shoreline, Washington, US
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Sunrise over Estrella Foothills, Arizona, US
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Fallstreak Hole (Cavum) spotted near the time of sunset, over Athens, Georgia, US
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Sunset captured by Darlene Sudell near the Hubbard Creek Reservoir, Breckenridge, Texas, US
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An isolated shower spotted over the Strzelecki Desert, South Australia on a Qantas flight from Brisbane to Perth, Australia
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Mammatus (Mamma) spotted over Modbury Heights, Adelaide, South Australia, Australia
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Undulatus spotted over Xinzhuang, New Taipei City, Taiwan
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Altocumulus spotted over Castropol, Asturias, Spain
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Signs of dissipating Cumulonimbus incus over the Bristol Channel towards England, spotted by Jean Deery near Barry, South Wales
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Crepuscular rays spotted over Mengelrode, Germany
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Altostratus spotted over the Atlantic Ocean, near Sidi Kaouki Beach, Morocco
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The brightest rainbow Eunice had ever seen, in an area wherein there are a lot of rainbows, spotted over Isle of Lewis, Scotland
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A view of Altocumulus stratiformis undulatus from above the clouds, off of the Atlantic Coast, near Daytona Beach, Florida, US
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Cumulus congestus spotted over West Esfahan, Iran
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Sunset over Taylor, Texas, US
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Cumulus fractus spotted over Northern Iran
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Mammatus (Mamma), indicating sinking, cold, and saturated air, are not always associated with convective storms, as in this case, spotted under Altocumulus clouds over Denton, Texas, US
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Sunrise on a tranquil morning with an air temperature of 5 degrees Fahrenheit, near Vermontville, Adirondacks, New York, US
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Corona spotted over Sacramento, California, US
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Sunset over Mojacar, Spain
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A plethora of contrails criss-crossing the sky over Catforth, Lancashire, England
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Asperitas in advance of a storm system over Beuningen, The Netherlands
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Cirrus spissatus spotted over the Poeh Cultural Center and Museum, Pojoaque, New Mexico, US
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Reflections of an elongated Altocumulus lenticularis spotted over Antelope Valley, California, US
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Altocumulus lenticularis spotted over Northern Iran
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Cumulus congestus developing on the horizon on a hot day at Mooloolaba Beach, Queensland, Australia
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Crepuscular rays over the Coast Range Mountains, spotted from the top of Mount Pisgah, Oregon, US
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Cumulonimbus with an arcus outlining the leading edge of the storm, accompanied by pannus, spotted by John's friend, Will Werner, in Brazil
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Cumulus spotted over the Mayan ruins at Aké, Yucatan, Mexico
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The sky presenting itself as a painting, observed over Stoke Hammond, Buckinghamshire, England
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Cumulonimbus spotted over Eastern Shore of Chesapeake Bay, Maryland, US
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Sunrise on New Year's Eve, over Twisp, Washington, US
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Signs of a distrail from a circling airplane spotted over Jiangsu, China
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Dense fog over the Salish Sea, with a myriad of clouds lit up by the setting sun, spotted while looking west towards Vancouver Island, from Sunshine Coast, British Columbia, Canada
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Fallstreak Hole (Cavum) spotted over Sedro Woolley, Washington, US
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Altocumulus perlucidus spotted over Fort Bragg, California, US
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A 'sea' of altocumulus over Micco, Florida, US
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An exquisite sunset over the Puget Sound, spotted from Shoreline, Washington, US
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