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Other Clouds
- Arcus
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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 foggy day in San Biagio, Montepulciano, Italy.
The spirit of the Concorde spotted over Conwy, North Wales
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A 'bird' cloud spotted over Los Alamos, New Mexico, US
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Following a humid day, a notable storm developed over the Tasman Sea, near Manly, New South Wales, Australia
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Cirrostratus spotted during the early evening over São Paulo City, Brazil
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An 'eye in the sky' during a view of the sunset from above the clouds, spotted over the North Atlantic Ocean
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A blanket of early morning fog over Madison, Wisconsin, US
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A view of Altocumulus stratiformis undulatus, also known as a 'mackerel sky', from above Onondaga County, New York, US
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Cumulus spotted over Yangmei, Taoyuan, Taiwan
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Altocumulus stratiformis radiatus spotted over Littleton, Colorado, US
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Altocumulus undulatus spotted over Upland, California, US
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Cirrus and Cirrostratus spotted over Seattle, Washington, US
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A plethora of Altocumulus stratiformis spotted over Hood River, Oregon, US
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A vivid primary rainbow along with a subtle secondary bow, spotted shortly before sunset over Sumirago, Varese, Italy
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Sunset near Lake Michigan, viewed from Kenosha, Wisconsin, US
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Undulatus within a dissipating altocumulus lenticularis formation, spotted over Brighton, Colorado, US
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