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Main Cloud Types
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Other Clouds
- Arcus
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- Cap / banner clouds
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- Cavum (Fallstreak hole)
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- Duplicatus
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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
Cloud ridges known as undulatus in a mixed sky after a four-day blizzard spotted from the North Shore (Silver Bay) of Lake Superior, Minnesota, US.
Low orographic clouds cover the peaks of Mingus Mountain and Prescott National Forest in Arizona, US.
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No room for blue in the clouds over Istanbul.
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Undulatus over Nelson, New Zealand.
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A glory spotted on approach to Denver airport.
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Undulatus over Curtin, Canberra, Australia.
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A cloud 'duvet' on the peaks near the Flathead River, Charlo Montana, US.
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A sunset over London, England.
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A northern lights and cloud mix over Calgary, Alberta, Canada.
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A sun pillar at sunset over Aubusson in Central France.
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Altostratus over Somerset, England.
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A sunset over Changhua City, Taiwan.
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"As above, so below."; when clouds mimic Lake Superior icebergs. Herbster, Wisconsin, US.
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A sea horse over Tualatin, Oregon, US.
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A sunrise over Sumirago, Varese, Italy.
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Above the clouds over Vietnam.
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