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Main Cloud Types
- Cumulus
- Stratus
- Stratocumulus
- 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
A sky full of Cirrus over Denver, Colorado, US.
One thought on “Larry Sessions”
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A misty Autumn morning near Crank, St Helens, Merseyside, England
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Fallstreak Hole (Cavum) spotted over Anduze, France
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Crepuscular rays over Sanxia, New Taipei City, Taiwan
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22-degree halo spotted near Devils Tower National Monument, Wyoming, US
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Sunrise over Reigate, England
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A plethora of contrails over St. Johnsbury, Vermont, US
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Altocumulus stratiformis perlucidus spotted over Seattle, Washington, US
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A feather-like contrail spotted in the morning sky over Atagohama, Fukuoka City, Japan
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Stratocumulus and crepuscular rays over Taitung, Taiwan
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Altocumulus lenticularis spotted over Los Alamos, New Mexico, US
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A funnel cloud spotted over Aurora, Colorado, US
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Contrails and cumulus in harmony above the Suffolk countryside, spotted over the Ickworth House, Suffolk, England
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Cumulus clouds spotted on a spring morning over Dernancourt, Adelaide, South Australia, Australia
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Sun Dog (Parhelion) spotted over Allen, Texas, US
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Fallstreak Hole (Cavum) spotted over Leichhardt, New South Wales, Australia
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Nice feathery clouds, thanks!
Martha Kelly