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Other Clouds
- Arcus
- Asperitas
- Cap / banner clouds
- Capillatus
- Castellanus
- Cataractagenitus
- Cauda (Tail cloud)
- Cavum (Fallstreak hole)
- Congestus
- Contrail (homogenitus)
- Duplicatus
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- Flammagenitus (Pyrocumulus)
- Floccus
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- Fractus
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- Lacunosus
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- Morning Glory Cloud
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- Mediocris
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- Noctilucent
- Pannus
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- Pileus
- Praecipitatio
- Radiatus
- Silvagenitus
- Spissatus
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- '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
An approaching storm over Rijswijk, The Netherlands
A frontal passage marked by an arcus, the leading edge of a thunderstorm, spotted over Boothbay Harbor, Maine, US
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Arcus, also known as a shelf cloud, indicating the leading edge of a thunderstorm, spotted over Guna, Madhya Pradesh, India
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An arcus indicating the leading edge of a thunderstorm, spotted near Maple City, Michigan, US
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A storm that brought some relief to the hot weather in the region, including Wantage, Oxfordshire, England
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An approaching storm with an arcus, also known as a shelf cloud, spotted near Rotterdam, The Netherlands
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An arcus, also known as a shelf cloud, indicating the leading edge of an approaching storm, spotted near Latham, Illinois, US
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An approaching storm with its arcus leading the way, spotted over Springfield, Missouri, US
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Arcus delineating the leading edge of a storm system as it moves over Columbia, Missouri, 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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An approaching storm system over Micco, Florida, US
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A storm system associated with a cold front spotted over Southern Alberta, Canada
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An arcus cloud, also known as a shelf cloud, ushering in a storm system near Swansea, Tasmania, Australia
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A robust, developing storm system spotted over Turks and Caicos Islands
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Cumulonimbus with an arcus outlining the leading edge of the storm, accompanied by pannus, spotted by John's friend, Will Werner, in Brazil
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An arcus ushering in a storm, spotted looking east over the Tasman Sea, near Balgowlah Heights, New South Wales, Australia
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