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Main Cloud Types
- Cumulus
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- 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
Circumzenithal Arc spotted over Norwich, England
Signs of a Fallstreak Hole (Cavum) spotted over Prerow, Germany
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A developing storm near Santiago, Chile
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Remnants of contrails spotted during the early afternoon over Springfield, Illinois, US
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A canvas of clouds and colour at sunset over Vermontville, Adirondacks, New York, US
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Cirrostratus spotted over North Dundas Township, Ontario, Canada
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Altocumulus perlucidus spotted at night over Velehrad, Czech Republic
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Sun Dog (Parhelion) spotted in the early evening over Wimborne, Dorset, England
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A mixed sky spotted by David's son, Craig West, over Callerton, near Newcastle upon Tyne, England
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Cirrus vertebratus spotted over Méthamis, Provence, France
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Sunset over Bonnie View Nature Sanctuary, Columbia, Missouri, US
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A bouquet of flowers floating in the sky over Toyohama, Fukuoka City, Japan
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A mixed sky spotted shortly before sunset over Mt. Haleakala, near Paia, Maui, Hawaii, US
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Subtle crepuscular rays at sunrise, prior to a day of hot temperatures, high winds, and intermittent thunderstorms over central Indiana, US
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Sunset following the passage of a storm near Sumirago, Varese, Italy
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Cumulonimbus spotted near Barcelona, Catalonia, Spain
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Altocumulus undulatus spotted over Aberdyfi, Wales
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Image: Wrapped Reichstag, Berlin, 1871-95. Photo: Wolfgang Volz © 1995 Christo and Jeanne-Claude Foundation
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Swallows taking in the early morning view over the Missouri River, near Wolf Creek, Montana, US
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A variety of Cumulus spotted near Winthrop, Washington, US
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Sunset over Lisboa, Portugal
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Signs of Altocumulus stratiformis undulatus over Hamilton, Ontario, Canada
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Altocumulus stratiformis spotted by Anuja's nephew, Abhimanyu Sinha, over Edinburgh, Scotland
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Altocumulus with signs of lacunosus, accompanied by subtle crepuscular rays closer to the horizon, spotted over Zingst, Germany
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Altocumulus over Taiwan
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A storm system hovering over Mt. Shasta, California, US
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An arcus, also known as a shelf cloud, marks the leading edge of a thunderstorm's gust front, spotted here with a storm system that generated a tornado warning near Omaha, Nebraska, US
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Cumulus congestus along the horizon, following stormy weather in the prior days, spotted looking north over Belfast Loch, near Bangor, Northern Ireland
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An expansive storm yielding heavy rain, spotted near Mendip Hills, Somerset, England
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Lacunosus spotted near Mt. Shasta, California, US
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A collection of Cumulus over Shawbost, Isle of Lewis, Scotland
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Altocumulus undulatus radiatus over Noville, Switzerland
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Altocumulus lenticularis spotted over Cuffley, Hertfordshire, England
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Undulatus spotted over Dorset, England
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Cumulus congestus spotted near Skien, Norway
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A developing storm approaching Chichester, England
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Asperitas spotted over Poelkapelle, Belgium
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Altocumulus lenticularis duplicatus, also known as 'pile d'assiettes', spotted at sunset over Torrejón de Ardoz, Spain
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Signs of a Fallstreak Hole (Cavum) spotted over Prerow, Germany
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A developing storm near Santiago, Chile
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Remnants of contrails spotted during the early afternoon over Springfield, Illinois, US
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A canvas of clouds and colour at sunset over Vermontville, Adirondacks, New York, US
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Cirrostratus spotted over North Dundas Township, Ontario, Canada
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Altocumulus perlucidus spotted at night over Velehrad, Czech Republic
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Sun Dog (Parhelion) spotted in the early evening over Wimborne, Dorset, England
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A mixed sky spotted by David's son, Craig West, over Callerton, near Newcastle upon Tyne, England
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Cirrus vertebratus spotted over Méthamis, Provence, France
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Sunset over Bonnie View Nature Sanctuary, Columbia, Missouri, US
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A bouquet of flowers floating in the sky over Toyohama, Fukuoka City, Japan
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A mixed sky spotted shortly before sunset over Mt. Haleakala, near Paia, Maui, Hawaii, US
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Subtle crepuscular rays at sunrise, prior to a day of hot temperatures, high winds, and intermittent thunderstorms over central Indiana, US
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Sunset following the passage of a storm near Sumirago, Varese, Italy
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Cumulonimbus spotted near Barcelona, Catalonia, Spain
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