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Main Cloud Types
- Cumulus
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- Stratocumulus
- Altocumulus
- Altostratus
- Cirrus
- Cirrocumulus
- Cirrostratus
- Nimbostratus
- 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
- Lenticularis
- 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
Cumulus humilis drifting by during sunrise over the Atlantic Ocean, near Boca Raton, Florida, US
Cumulus spotted over the Tejo River (Tagus), Lisboa, Portugal
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An intersection of contrails spotted over Baden bei Wien, Austria
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Cumulus developing during a heat wave, spotted over the Taunus Hills, Hessen, Germany
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Cumulus dotting the sky over Monument Valley, Arizona, US
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A variety of Cumulus spotted by Anuja's friend, Nandini Patil, over the Indian Ocean, near Bentota, Sri Lanka
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A sighting of a fluffy dog in the sky over Woburn, Bedfordshire, England
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Cumulus humilis spotted on an afternoon at the Alster, a tributary of the Elbe River, near Hamburg, Germany
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Cumulus clouds with the lower one taking on the look of a scorpion, spotted over Vancouver, Washington, US
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Cumulus spotted over Lisboa, Portugal
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Cumulus humilis populating the sky over Rocklin, California, US
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Cumulus dotting the sky over Hakata Bay, near Nokonoshima Island, Fukuoka City, Japan
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Cumulus humilis spotted over Modbury Heights, Adelaide, South Australia, Australia
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A variety of cumulus cloud formations spotted on a summer afternoon over Brooklyn, New York, US
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Cumulus dotting the sky with the backdrop of what appears to be the remnants of contrails over Orchard Park, New York, US
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Cumulus humilis and fractus over Monthault, Ille et Vilaine, France
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