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Main Cloud Types
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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
- Diamond dust
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- Fibratus
- Flammagenitus (Pyrocumulus)
- Floccus
- Fluctus (Kelvin-Helmholtz)
- Fractus
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- Lacunosus
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- Morning Glory Cloud
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- Mediocris
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- Noctilucent
- Pannus
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- Pileus
- Praecipitatio
- Radiatus
- Silvagenitus
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- 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
Nimbostratus on a rainy day near the Embalse del Ebro, Burgos, Spain
Nearing sunset over West Loch Tarbert, Argyll, Scotland
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A view from above the clouds, near the Nez Perce Reservation, Pierce, Idaho, US
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A colourful display of Altocumulus spotted over the Manchester Airport, Ringway, England
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Undulatus spotted over Markham, Ontario, Canada
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Sunset as viewed on approach to Orange County Airport, near Santa Ana, California, US
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Crepuscular rays at sunset over the Atlantic Ocean, spotted off of the coast of Morocco, North Africa
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Signs of remnants of contrails, with upper level winds spreading it out perpendicular to its original pathway, spotted over San Bernardino County, California, US
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A developing storm system near Sidmouth, Devon, England
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A captivating, mixed sky over Lisbon, Portugal
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Strong upper level winds leading to the dispersal of this Cirrus cloud and the appearance of a large feather in the sky, which may have had its origins in a contrail or two, spotted over Kelseyville, Lake County, California, US
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Altocumulus straitformis undulatus spotted over Lizard Point, Cornwall, England
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Sunrise after a snowstorm in Toronto, Ontario, Canada
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Crepuscular rays at dawn over Avebury, Wiltshire, England
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Undulatus at sunset over Gaw Hill, Ormskirk, England
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Contrails spotted over Salt River, Mesa, Arizona, US
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