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Main Cloud Types
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- Cumulonimbus
Other Clouds
- Arcus
- Asperitas
- Cap / banner clouds
- Capillatus
- Castellanus
- Cataractagenitus
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- Cavum (Fallstreak hole)
- Congestus
- Contrail (homogenitus)
- Duplicatus
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- Distrail
- Fibratus
- Flammagenitus (Pyrocumulus)
- Floccus
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- Fractus
- Homogenitus
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- Lacunosus
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- Morning Glory Cloud
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- Noctilucent
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- Praecipitatio
- Radiatus
- Silvagenitus
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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
Cumulonimbus over Saint-Jurs, France
Following a lot of rain, a tranquil view of sunset over the Isle of Mull, as seen from Oban, Scotland
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The edge of a storm system near Sumirago, Varese, Italy
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Sunrise over the Del Plata River, Buenos Aires, Argentina
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Pileus spotted over Belgium
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Altocumulus perlucidus over Pewsey, Wiltshire, England
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Lacunosus spotted over North Devon, England
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Altocumulus stratiformis radiatus over Bentworth, Hampshire, England
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A mixed sky at sunset, as seen from 36,000 feet above the ground, on a flight that was traversing across southern Japan
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A roll cloud, or volutus, which is a rare, low horizontal tube-shaped arcus cloud, detached from the parent storm cloud, and represents the leading edge of a thunderstorm's gust front. This example was spotted between Vinylhaven Island and the Rockland area of the Mid-Coast, near Penobscot Bay, Maine, US.
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Looking west over the Pacific Ocean, cirrus uncinus and cirrocumulus undulatus are spotted near Yachats, Oregon, US
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Cirrostratus that appears to be somewhat attributable to prior contrails, spotted over the University of Washington, Seattle, Washington, US
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A view from above the clouds, and capturing a cloud formation that looks like a 'cloud boat', spotted on a flight from Vilnius to Brussels, while over Poland
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Iridescence amidst an opening in the sky over Winchester, England
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A developing storm system over Chioggia, south of Venice, Italy
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Altocumulus lenticularis at sunset over Vermontville, Adirondacks, New York, US
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