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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
Virga, wich are trails of precipitation that fall from the underside of a cloud, but evaporate or sublime before it reaches the ground, spotted here from altocumulus clouds over Ottawa, Ontario, Canada.
The energy of a developing storm, accompanied by falling precipitation, spotted near Charlo, Montana, US
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A fogbow, which is formed in fog or mist near the ground and often called a 'white rainbow' or 'mistbow'. This classic example was spotted over San Miguel Island, California, US.
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Sunset with subtle signs of supercilium spotted over Crank, Merseyside, England
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A thin layer of fog spotted early in the morning over Poole, Dorset, England
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A line of stratocumulus spotted over Central Province, Iran
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After a week of notable rainfall in the Pacific Northwest, a view of the sunset in an area where there is often a 'rain shadow' due to the nearby Olympic Mountains, spotted over Puget Sound, Seattle, Washington, US
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Altocumulus lenticularis spotted on the western edge of Los Alamos, New Mexico, US
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A wispy cloud in the foreground, with a storm system on the horizon, spotted over Great Island, Cobh, Ireland
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An imposing storm system viewed with the lighting effect from the sun, spotted over Greenville, South Carolina, US
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Remnants of a Fallstreak Hole (Cavum) spotted by Peter's friend, Valerie, over Bentworth, England
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Sunset along the River Itchen in Southampton, Hampshire, England
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Sun Dog (Parhelion) spotted over Larestan, Iran
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Altocumulus perlucidus spotted over Taiwan
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A colourful view of cloud streets, which are long, parallel rows of cumulus clouds formed by horizontal convective rolls in the atmosphere, spotted from Moana Beach, looking towards Rapid Head, South Australia, Australia
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A developing storm near Lisboa, Portugal
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