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Main Cloud Types
- Cumulus
- Stratus
- 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
A mesmerizing mosaic of altocumulus spotted at sunset, following a winter day near Taylor, Texas, US
A 'sea' of altocumulus over Micco, Florida, US
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Sunset captured by Darlene Sudell near the Hubbard Creek Reservoir, Breckenridge, Texas, US
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Altocumulus stratiformis radiatus spotted over Beechhurst, Queens, New York, US
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Altocumulus stratiformis radiatus spotted over Littleton, Colorado, US
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Cirrus fibratus radiatus spotted over Middle Bolton Lake, Bolton, Connecticut, US
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Altocumulus stratiformis radiatus over Westdorf, Baltrum, Germany
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A mixed sky over Fixin, Burgundy, France
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Stratocumulus undulatus radiatus over Helston, Cornwall, England
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Altocumulus undulatus radiatus spotted over Mawgan, Cornwall, England
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Altocumulus radiatus over Belgium
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Altocumulus stratiformis radiatus over Bentworth, Hampshire, England
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Altocumulus undulatus radiatus spotted by Beatrice's son-in-law, Patrick De Wachter, over Aartselaar, Belgium
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Altocumulus undulatus radiatus over Brisbane, Australia
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Altocumulus radiatus over North Padre Island, Texas, US
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A magnetic sunset captured by Cristina's friend, Linette Peterson, near Shelley, Idaho, US
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