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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
- Distrail
- Fibratus
- Flammagenitus (Pyrocumulus)
- Floccus
- Fluctus (Kelvin-Helmholtz)
- Fractus
- Homogenitus
- Horseshoe vortex
- Humilis
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- Intortus
- Lacunosus
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- Morning Glory Cloud
- Murus (Wall cloud)
- Mediocris
- Nacreous
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- 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
Altocumulus perlucidus over San Bernardino County, California, US
Altocumulus with signs of iridescence over Rye, East Sussex, England
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Mesmerizing iridescence spotted near Blowing Rock, North Carolina, US
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Pileus with iridescence spotted over Mantua, New Jersey, US
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Evening sky on the longest day of the year, near Falls Church, Virginia, US
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A colorful display of iridescence over Adelaide, South Australia
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Iridescence upon a fish-shaped cloud over Mendip Hills, Somerset, England
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Crepuscular rays highlighting a cloud formation that looked like a dinosaur eating the sun, spotted over San Antonio, Texas, US
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An incoming storm system with crepuscular rays and shadows along the horizon, near North Dundas Township, Ontario, Canada
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Undulatus and iridescence, with some signs of supercilium, spotted in conjunction over Canutillo, Texas, US
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A dynamic, mixed sky over Schleiz, Germany
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Altocumulus perlucidus upon which Lauren observed a resemblance to the shape of angel wings, spotted over Twisp, Washington, US
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Vibrant iridescence over Kawaguchi Lake, Minamitsuru District, Yamanashi Prefecture, Japan
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An intricate pattern in the sky, accompanied by subtle crepuscular rays, spotted during the morning hours over Calistoga, California, US
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Altocumulus stratiformis perlucidus with iridescence, spotted over West Palm Beach, Florida, US
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A contrail slicing through the sky, with iridescence amidst the cumulus fractus, spotted over Northern California, US
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