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Main Cloud Types
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- Cumulonimbus
Other Clouds
- Arcus
- Asperitas
- Cap / banner clouds
- Capillatus
- Castellanus
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- Cavum (Fallstreak hole)
- Congestus
- Contrail (homogenitus)
- Duplicatus
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- Flammagenitus (Pyrocumulus)
- Floccus
- Fluctus (Kelvin-Helmholtz)
- Fractus
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- Mediocris
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- Pannus
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- Radiatus
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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 day after a tornado impacted the area, Darcie's friend, Vicki Kiesau, spotted an expansive display of Virga over Tulsa, Oklahoma, US
After reaching the summit of Frenchmans Cap, Wayde was surrounded by clouds. After 20 minutes the clouds began to lift and clear. Then, as he began to descend, a horseshoe vortex appeared in his view, spotted from Frenchmans Cap, Tasmania, Australia.
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Crepuscular rays spotted over Western Iran
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Altocumulus lacunosus spotted over Turville, England
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Altocumulus lenticularis duplicatus spotted over the Alps Mountains, near Wagrain, Austria
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Crepuscular rays spotted over Funchal, Madeira, Portugal
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Primary and secondary bows spotted over the Ferry Building, Auckland, New Zealand
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22-degree halo spotted over Sacramento, California, US
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Fluctus (Kelvin-Helmholtz) spotted over the Rockies, near Brighton, Colorado, US
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Altocumulus stratiformis undulatus, also known as a 'mackerel sky', spotted over Burton on Trent, England
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A classic example of a rare horseshoe vortex spotted over Roanoke, Virginia, US
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A classic example of a large horseshoe vortex spotted in the late afternoon over Asheville, North Carolina, US
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Crepuscular rays spotted over Jeollanam-do, South Korea
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Sunset accompanied by a rainbow, spotted near Prestonpans, Scotland
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Nacreous spotted over Nesodden, Norway
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A vivid 22-degree halo spotted around mid-day over Singapore
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