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Main Cloud Types
- Cumulus
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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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- 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
The clouds undulate and radiate towards the horizon over the Bradbury Mountain State Park, Pownal, US.
Stratocumulus lenticularis, an uncommon version of the lenticular cloud, spotted over Avellino, Italy
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Virga over Salida, Colorado, US
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Signs of mammatus (mamma) at sunset near Hexham, Northumberland, England
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A duck traversing the reflection of the cumulus clouds, spotted on the Connecticut River, near Turners Falls, Massachusetts, US
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Two areas of developing cumulonimbus, spotted along the horizon near North Dundas Township, Ontario, Canada
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A slice of the sun shining in between layers of stratocumulus, spotted over Krzeszowice, Poland
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A full moon with passing stratus fractus over Collioure, France
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Altocumulus lenticularis spotted near Twisp, Washington, US
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Altocumulus lenticularis over Svalbard, Norway
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Stratocumulus over Krakow, Poland
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An opening spotted amidst the cumulus clouds over Esfahan, Iran
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A developing cumulonimbus reflected on a car hood, spotted near Meinohama Fishing Port, Fukuoka City, Japan
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A developing cumulonimbus spotted near Richmond Hill, Georgia, US
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Reflections of altocumulus lenticularis over Mirror Lake, Lake Placid, New York, US
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A colourful display over North Brunswick, New Jersey, US
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