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Main Cloud Types
- Cumulus
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- Cumulonimbus
Other Clouds
- Arcus
- Asperitas
- Cap / banner clouds
- Capillatus
- Castellanus
- Cataractagenitus
- Cauda (Tail cloud)
- Cavum (Fallstreak hole)
- Congestus
- Contrail (homogenitus)
- Duplicatus
- Diamond dust
- Distrail
- Fibratus
- Flammagenitus (Pyrocumulus)
- Floccus
- Fluctus (Kelvin-Helmholtz)
- Fractus
- Homogenitus
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- Lacunosus
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- Morning Glory Cloud
- Murus (Wall cloud)
- Mediocris
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- Noctilucent
- Pannus
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- Pileus
- 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
A sunrise that was so crystal clear that Dean thought it looked like there was lava flowing in the valley, seen here over Española Valley, north of Santa Fe, New Mexico, US
A view of the mountain peak in between layers of Stratus, near Brenner Pass, South Tyrol, Italy
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Signs of asperitas in the afternoon over Curtin, Canberra, Australia
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Altocumulus stratiformis spotted over Luxembourg City, Luxembourg
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Cumulus congestus spotted above the willows, over Jiangsu, China
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A rabbit spotted in the sky over Killesberg, Stuttgart, Germany
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Cumulus that looks like a dog's head looking to the side, spotted over Vancouver, Washington, US
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Moon Dogs, also known as paraselenae, a rare optical phenomenon, spotted along with a 22-degree lunar halo over Sumirago, Varese, Italy
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Sunset accompanied by mammatus (mamma) clouds, following heavy rain in Karachi, Pakistan
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Altocumulus lenticularis amidst a golden sky near Tangier, Morocco
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A colourful sunset over North Dundas Township, Ontario, Canada
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A cold front accompanied by a stormy sky near Holland, Michigan, US
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A mesmerizing sunrise for the fishermen at Marinatown Seaside Park, Fukuoka City, Japan
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A sunset view captured by Haruko's son, Ben, while visiting Magnolia, Kentucky, US
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Signs of supercilium spotted briefly near Charlo, Montana, US
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Sunrise over Oakland, California, US
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