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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
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- Flammagenitus (Pyrocumulus)
- Floccus
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- Fractus
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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
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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
Virga, wich are trails of precipitation that fall from the underside of a cloud, but evaporate or sublime before it reaches the ground, spotted here from altocumulus clouds over Ottawa, Ontario, Canada.
Lightning stretching across the sky, spotted near Bluff, Utah, US
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An exquisite sunrise spotted while looking east over the Sangre de Cristo mountains, north of Santa Fe, near Los Alamos, New Mexico, US
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Sunrise over San Leandro, California, US
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A window reflection of a sunset near Haenam-gun, South Jeolla Province, South Korea
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A dynamic double rainbow spotted while driving near the Siskiyou Pass, Northern California, US
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A low lying stratocumulus lenticularis spotted near Minchinhampton, Gloucestershire, England
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A reflection of cumulus congestus in the Stinson Lagoon, West Marin, California, US
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Cirrus fibratus with cumulus dotting the sky below, spotted over Glebe, New South Wales, Australia
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A picturesque sunset viewed over railroad tracks, near Zagreb, Croatia
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Mammatus (Mamma) spotted at sunset over Mercogliano, Italy
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Taken during their daughter's wedding, an expansive view of virga was spotted near Santa Fe, New Mexico, US
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A layer of stratocumulus spotted near Farndon, Chester, England
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Undulatus spotted over Sky Valley, California, US
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Stratocumulus visible at night with the moonlight, spotted near Neah Bay, Washington, US
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Altocumulus perlucidus above a layer of stratocumulus, spotted over Taoyuan, Taiwan
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