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Other Clouds
- Arcus
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- Cap / banner clouds
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- 'Supercilium' (not official classification)
- Translucidus
- Tuba / Twister
- Uncinus
- Undulatus
- Velum
- Vertebratus
- Virga
- Volutus (Roll cloud)
Optical Effects
- 22° Halo
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- Parry supralateral arc
- Rainbow
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- Sub-sun
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- Sun dog (Parhelion)
- Sun pillar
- Supernumerary bows
- Subparhelic circle
- Supralateral arc
- Upper tangent arc
- Wegener arc
A well-defined arcus marks the leading edge of this storm system, which is accompanied by asperitas and signs of lacunosus, near Fort Wayne, Indiana, US
Primary and secondary bows spotted over the Ferry Building, Auckland, New Zealand
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Altocumulus stratiformis spotted over Sanxia, New Taipei City, Taiwan
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A drifting Cumulus fractus spotted over Taiwan
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Altocumulus spotted over Shenzhen, China
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Sunset over Westbury sub Mendip, Somerset, England
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A developing storm during the morning hours over São Paulo City, Brazil
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Cirrus spotted over Mercogliano, Italy
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Altocumulus stratiformis undulatus spotted during the late afternoon over Vermontville, Adirondacks, New York, US
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Sun Dog (Parhelion) spotted over Shingle Springs, California, US
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Sunset over National Taipei University, Taiwan
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A picturesque rainbow spotted over the Estrella Foothills, Arizona, US
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Sunrise over Oakland, California, US
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A contrail spotted across the sky over Edinburgh, Scotland
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Subtle signs of Fluctus (Kelvin-Helmholtz) spotted over Jiangsu, China
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Fog rising off of a golf course during sunrise over Orlando, Florida, US
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