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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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- Cavum (Fallstreak hole)
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- Duplicatus
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- Praecipitatio
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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
A sky full of Cirrus over Denver, Colorado, US.
One thought on “Larry Sessions”
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Altocumulus spotted shortly after sunrise over Toyohama, Fukuoka City, Japan
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Cumulus humilis spotted over Falls Church, Virginia, US
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Cirrus uncinus spotted during the late morning over Modbury Heights, Adelaide, South Australia, Australia
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22-degree halo spotted over Vancouver, Washington, US
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Converging contrails create a matrix in the sky, spotted over Estrella Foothills, Arizona, US
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Primary and secondary rainbows spotted over Moose Jaw, Saskatchewan, Canada
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22-degree halo spotted over Carlton, Washington, US
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A colourful evening view over Mahajeran, Iran
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Pileus spotted above Cumulus congestus near Guna, Madhya Pradesh, India
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Cloud-to-cloud lightning spotted during a thunderstorm near Lewisham, London, England
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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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Altocumulus with signs of undulatus and lacunosus, spotted at sunset over Guna, Madhya Pradesh, India
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Cumulonimbus incus spotted over Novo Hamburgo, Rio Grande do Sul, Brazil
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Lightning amidst a thunderstorm over Brighton, Colorado, US
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Nice feathery clouds, thanks!
Martha Kelly