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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)
- Congestus
- Contrail (homogenitus)
- Duplicatus
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- Flammagenitus (Pyrocumulus)
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- Fluctus (Kelvin-Helmholtz)
- Fractus
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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
- 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 cloud comes down to visit the mountains at Mirantao, Minas Gerais, Brazil.
Cloudbow over Newlyn, United Kingdom
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A primary rainbow and a subtle secondary rainbow spotted during a storm near Mercogliano, Italy
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A plethora of clouds on a hike in the Adirondacks, New York, US
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On board an airplane departing the Charlotte area, Haruko conveyed that there were tornado warnings in the area on this day. From what it appears, the cloud column that is reaching the ground shows signs that it might have been a brief tornado touchdown near Charlotte, North Carolina, US.
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Sunrise with early morning fog over Mission Mountain Range near Ronan, Montana, US
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Sunrise from Cadillac Mountain, the first place where the sun's rays hit the United States during the summer months, is located in Acadia National Park, Maine, US.
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A contrail partly hidden by lower level cumulus fractus over Soledad, California, US
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Altocumulus lenticularis near Canutillo, Texas, US
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During sunrise there appears to be a small horseshoe vortex in the sky, along with signs of undulatus, near the Estrella Foothills, Arizona, US
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A mirror reflection of stratus near Bygland, Norway
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Asperitas over Saulieu, France
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Remnants of a contrail on a blue sky day over Huntington, Indiana, US
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Cirrus over Seh Chahoun, Behabad City, Yazd Province, Iran
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Cirrus over Woodvale, Australia
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