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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
- Distrail
- Fibratus
- Flammagenitus (Pyrocumulus)
- Floccus
- Fluctus (Kelvin-Helmholtz)
- Fractus
- Homogenitus
- Horseshoe vortex
- Humilis
- Incus
- Intortus
- Lacunosus
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- Morning Glory Cloud
- Murus (Wall cloud)
- Mediocris
- Nacreous
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- 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
A mesmerizing sunset near Charlo, Montana, US
Altocumulus over Hoogland, Netherlands
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A dynamic sunset accompanied by a sun pillar, captured by David's son, Craig, near Newcastle upon Tyne, England
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Undulatus in the sky over Taichung, Taiwan
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Sunrise over Falls Church, Virginia, US
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Contrails and a slice of the moon after sunset over North Devon, England
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A storm near the St. Lawrence River, spotted from North Dundas Township, Ontario, Canada
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Chasing the sun while flying between cloud layers, as seen over the Pacific Ocean on the way to Japan
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Crepuscular rays on the horizon, following the passage of a storm near the coast of California, US
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A sun pillar making its way through layers of thin clouds during sunset near Nazare, Portugal
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Sunset over Brisbane, Australia
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Just prior to sunset, Archana noticed clouds that looked like a giant bird with wings spread, spotted over Dubai, United Arab Emirates
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A fisherman amidst a sunset over the coast of Ikinomatsubara, Fukuoka City, Japan
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Reflections at sunrise over Twin Lakes, Columbia, Missouri, US
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Sunrise over Princeville, Kauai, Hawaii, US
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A dynamic storm system illuminated by the setting sun over San Francisco Bay, near Oakland, California, US
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