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Main Cloud Types
- Cumulus
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- 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 view of Altocumulus stratiformis undulatus from above the clouds, off of the Atlantic Coast, near Daytona Beach, Florida, US
Mammatus (Mamma) spotted in the morning sky over Arlington, Virginia, US
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An 'X' created by contrails over Falls Church, Virginia, US
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Partial clearing following a morning storm near Falls Church, Virginia, US
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A plethora of contrails near Washington National Airport, spotted from Falls Church, Virginia, US
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Cirrus uncinus spotted during the morning over Falls Church, Virginia, US
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Sunset after some rainfall near Arlington, Virginia, US
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A red light, appearing to indicate foreboding skies ahead, with mammatus (mamma) spotted at sunset over Arlington, Virginia, US
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Altocumulus undulatus at night, spotted over Charlottesville, Virginia, US
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Cirrostratus spotted over Falls Church, Virginia, US
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A framed view of stratocumulus, spotted near Upperville, Virginia, US
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Cumulus congestus spotted over Arlington, Virginia, US
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A view from above Lake Erie, US
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Reflections of the sky over the Little Missouri River, near Elkhorn Ranch, North Dakota, US
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Remnants of contrails in the morning sky over Falls Church, Virginia, US
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Altocumulus undulatus spotted by Haruko's friend, Janet, over Vinalhaven Island, off the coast of Maine, US
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