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Other Clouds
- Arcus
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- Cap / banner clouds
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- Cataractagenitus
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- Cavum (Fallstreak hole)
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- Morning Glory Cloud
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- Mediocris
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- Pileus
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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
Altocumulus lenticularis duplicatus accompanied by Mt. Rainier in a majestic pairing near Seattle, Washington, US
The leading edge of a storm system near Paynesville, Minnesota, US
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Sunset over Magdeburg, Germany
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Clouds moving swiftly over Moss Landing, California, US
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A dynamic view of undulatus and mammatus, ushering in the arrival of a front along the Oregon Coast, near China Creek Beach, Bandon, Oregon, US
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Cumulus congestus over Seaburn, Sunderland, England
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A storm system with a leading arcus, otherwise known as a shelf cloud, near Brighton, Colorado, US
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Cumulonimbus near North Dundas Township, Ontario, Canada
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The view during a scenic bike ride, a vast sky filled with clouds, spotted near Wolf Creek, Montana, US
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A view from above, with cumulus congestus in the distance, spotted over Henan Province, China
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Altocumulus stratiformis over Ocean Shores, Washington, US
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A 22-degree halo with an intersecting contrail, spotted over Rufford, West Lancashire, England
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Crepuscular rays and shadows amidst a late afternoon turbulent sky, near the Adirondacks, Vermontville, New York, US
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Undulatus over Whitley Bay, England
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A classic example of asperitas spotted over the Black Mountains, Western North Carolina, US
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A variety of cumulus over Northwest Iran
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