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Main Cloud Types
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Other Clouds
- Arcus
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- Cap / banner clouds
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- 'Supercilium' (not official classification)
- Translucidus
- Tuba / Twister
- Uncinus
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- 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
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- 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
Primary and secondary rainbows following the passage of a storm near Brighton, Colorado, US
Cumulonimbi spotted throughout the sky over Atagohama, Fukuoka City, Japan
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Rain showers near Torrejon de Ardoz, Spain
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A developing Cumulonimbus spotted over Southport, Lancashire, England
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Cumulonimbus spotted over Taiwan
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Cumulonimbi spotted along the horizon, near Bolivar, Missouri, US
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An expansive view of a severe thunderstorm that produced large hail and heavy rain near Brighton, Colorado, US
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A developing storm over Taiwan
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A classic example of Mammatus (Mamma) spotted over Villefranche sur Mer, France
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A stormy sky on a day when supercells were in the area near Haarlem, The Netherlands
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A storm system illuminated during sunrise over Plaquemine, Louisiana, US
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An approaching storm over Rijswijk, The Netherlands
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A frontal passage marked by an arcus, the leading edge of a thunderstorm, spotted over Boothbay Harbor, Maine, US
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A storm accompanied by mammatus (mamma), spotted over North Dundas Township, Ontario, Canada
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An approaching storm near Douglasville, Georgia, US
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A developing storm over Innsbruck, Austria
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