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Main Cloud Types
- Cumulus
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- Altocumulus
- Altostratus
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- Cirrocumulus
- Cirrostratus
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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
- Horseshoe vortex
- Humilis
- Incus
- Intortus
- Lacunosus
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- Mamma
- Morning Glory Cloud
- Murus (Wall cloud)
- Mediocris
- Nacreous
- Nebulosus
- Noctilucent
- Pannus
- Perlucidus
- Pileus
- Praecipitatio
- Radiatus
- Silvagenitus
- Spissatus
- Stratiformis
- '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
Clouds reflected in a garden pool where koi can swim "in the clouds". Macduff shared that clouds have significant symbolic presence in Japanese culture and are emphasized in gardens. They are symbols of change, impermanence, mystery, and potential, as well as the domain of the gods and the sacred. This exquisite reflection was spotted at the Adachi Museum of Art in Yasugi, Japan.
Virga, which is a trail of precipitation that falls from a cloud and evaporates before it can reach the earth's surface, is shown here amidst a vibrant sky near Santa Rosa, California, US
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Cirrus uncinus on grand display near San Luis Obispo, California, US
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Sun Dogs, also known as a Parhelion, on a cold day near Brighton, Colorado, US
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Cumulus and cumulus fractus populate the sky over Northwest Iran
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Sunset captured by Jean's friend, Mattie Hunter, looking west from an elevation of 2,000 feet in the Appalachian Mountains in northeast Georgia, US
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Cirrostratus undulatus at sunrise over Arnhem, Netherlands
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A classic example, as well as a mesmerizing display, of altocumulus stratiformis radiatus, spotted by Travis and his students at Santa Rita Middle School, Liberty Hill, Texas, US
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A mosaic of colour over the Partenio Mountains, Mercogliano, Italy
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A storm system that Bridget conveyed had produced snow showers, and prior to that, thunder snow, over Crank, Merseyside, England
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Altocumulus lenticularis duplicatus over Gorbea, a mountain with a height of 1,482 meters above sea level, in the Basque Country, Spain
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Multi-level view of the stratus cloud type as seen from the summit of the Whiteface Mountain Ski Center in the Adirondacks, Lake Placid, New York, US
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A reflection of an expansive display of altocumulus stratiformis undulatus over Meinohama Fishing Port, Fukuoka City, Japan
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Mammatus (Mamma) spotted over Woden, Canberra, Australia
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A vivid sunset, as photographed by Moriah's sister, Brianna Rivas, near Antelope Valley, California, US
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A storm system with a well-developed arcus, also known as a shelf cloud, near Cotia, Sao Paolo, Brazil
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