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Main Cloud Types
- Cumulus
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- Cirrocumulus
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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
An afternoon downpour near Charlo, Montana, US
Virga spotted over Torrejon de Ardoz, Spain
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22-degree halo over Doubtful Sound, New Zealand
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Mesmerizing iridescence spotted near Blowing Rock, North Carolina, US
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Cumulus over Seaham, England
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A solitary cloud spotted amidst the blue sky over Goffs Oak, Hertfordshire, England
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As the plane began its descent, Rachel noticed a cloud that resembled a small, errant, and lonely tornado. This took place towards the end of a flight from Vancouver, British Columbia to Ottawa, Ontario, Canada.
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Cumulus framing up the blue sky, spotted over Cumberland Island, Georgia, US
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A view of the moon in between the clouds over Esfahan, Iran
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Cumulus over Twisp, Washington, US
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Cumulus fractus populating the sky over Northern California, US
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A unique juxtaposition of clouds and light, yielding a sight that is ripe for the imagination, spotted over Gaw Hill, Ormskirk, England
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Crepuscular rays over Yeonil, Namgu, Pohang, South Korea
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Fibratus over Gibsons, British Columbia, Canada
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A colourful sunset over Columbia, Missouri, US
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Summer sunset over Rumwell, Somerset, England
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