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Main Cloud Types
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Other Clouds
- Arcus
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- Cap / banner clouds
- Capillatus
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- Cataractagenitus
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- Cavum (Fallstreak hole)
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- Morning Glory Cloud
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- '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
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- 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
Sunset over Mojacar, Spain
Cirrus spissatus spotted over the Poeh Cultural Center and Museum, Pojoaque, New Mexico, US
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Sunset with dynamic colours, along with crepuscular rays and shadows, spotted over Vermontville, Adirondacks, New York, US
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A sun dog spotted amidst a colourful sky over Dalmatia, Croatia
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Crepuscular ray at sunrise over Wellington, Aotearoa, New Zealand
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A developing storm system spotted over Central Federal District, Russia
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An exquisite pattern at sunset near Waianae, Hawaii, US
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An expansive view from atop Gemsstock Mountain Peak, Andermatt, Switzerland
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Sunset with mammatus (mamma) and lightning, spotted over Daytona Beach, Florida, US
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A dynamic and vivid sunset near Lexington, Virginia, US
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Sunrise over Central Province, Iran
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Fallstreak Hole (Cavum) in the shape of a heart and with a view of the blue sky, spotted following a week of rain in Waikiki, Honolulu, Hawaii, US
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Sunset following a storm over Canberra, Australia
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Lacunosus, a relatively rare and short-lived cloud formation, takes on the look of a honeycomb pattern of round holes with frayed edges. It is formed when a layer of rising warm air and a layer of cold air come into contact with one another, causing downdrafts that push through the cloud. This classic example was spotted by Alexia's friend, Bob Hunter, near Lexington, Virginia, US.
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A colourful sky over Quincy, Washington, US
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A colourful sunrise over Brighton, Colorado, US
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