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Main Cloud Types
- Cumulus
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- Stratocumulus
- Altocumulus
- Altostratus
- Cirrus
- 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
- 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
A reflection of the sunset near Seaside, Oregon, US
Undulatus that looks like stripes in the sky, spotted over Edmonton, Kentucky, US
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Sun Dog (Parhelion) spotted over Madison, Wisconsin, US
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Stratocumulus over the mountains in Northern California, US
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An early evening storm as seen when looking east towards the Mission Mountain Range, near Charlo, Montana, US
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Altocumulus lenticularis on a cold and windy day near East Tisted, Hampshire, England
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A "firebird" in the sky over Cirencester, Gloucestershire, England
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An exquisite reflection during the early morning, at the Clear Creek Boat Launch, Loudon, Tennessee, US
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A photograph that looks like a painting, captured near Moon Mountain, Santa Fe, New Mexico, US
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Altocumulus undulatus radiatus spotted over the Township of North Dundas, Ontario, Canada
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Virga that Helen says resembles a cloud eating monster, spotted over Somerset, England
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Crepuscular rays in the morning near Aljezur, Portugal
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A picturesque collection of cumulus clouds over the Danube River, Belgrade, Serbia
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After a week of rain, Paolo shared a sunrise with a faint fragment of a rainbow towards the west, near Sumirago, Varese, Italy
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A classic example of a multi-layered altocumulus lenticularis duplicatus, spotted over Ponta Delgada Harbour, Sao Miguel, Azores, Portugal
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Cumulus mediocris "floating" over the fields near Greatham, Hampshire, England
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