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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
Cumulus cloud calm, following a Typhoon in Hong Kong. 2005.
Remnants of contrails spotted over Lake Stevens, Washington, US
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Altocumulus perlucidus spotted near Munich, Bavaria, Germany
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A walk along the beach at sunrise, near Boca Raton, Florida, US
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Mammatus (Mamma) spotted over Antelope Valley, California, US
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Cumulus spotted over Taiwan
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A plethora of contrails spotted by Alexia's friend, Ted Burrowes, near Lexington, Virginia, US
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Supernumerary bows spotted along with a secondary bow over Little Green Farm, Bedford, Virginia, US
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Cumulus and crepuscular rays spotted shortly after sunrise over Madison, Wisconsin, US
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During the monsoon season in the summer, this storm system was spotted shortly after sunset, with precipitation that appears to dissipate prior to reaching the ground (Virga), as well as areas where the rain touches the ground, near Hope, Arizona, US
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22-degree halo spotted in the mountains near Mercogliano, Avellino, Italy
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Fallstreak Hole (Cavum) spotted over North Munich, Bavaria, Germany
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Developing storms spotted on a flight over the Tasman Sea, between Australia and New Zealand
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Altocumulus spotted over Taipei City, Taiwan
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Signs of supercilium, an unofficial classification for a cloud formation that resembles eyebrow-like features, spotted off the San Francisco coast, approximately five miles from Stinson Beach, California, US
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Cirrus spotted in the early afternoon over Lisboa, Portugal
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