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Main Cloud Types
- Cumulus
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- Stratocumulus
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- 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
Cirrus spissatus with some curvature over Higgins Lake, Roscommon, Michigan, US
A whirlwind display of Cirrus over Nave do Barao, Portugal
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Cirrus spissatus over Fairy Meadow, New South Wales, Australia
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Cirrus filled sky over Anglesey Abbey, Stow-cum-Quy, England
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A vast display of Cirrus clouds during an early morning kayak on Lake Placid, New York, US
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Cirrus filled sky over Fagan Park, Sydney, Australia
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A display of Cirrus over Najaf Ashraf, Iraq
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Amidst the Cirrus spissatus cloud, Janis London enjoyed the angel within her view, near Folsom, California, US
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Cirrus in a spin over Point Reyes Station, California, US.
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A swirl of Cirrus over San Francisco, US.
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A Wolf's head over Plymouth, Devon, England.
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An Angel over Brooklyn, New York, US.
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A cloud 'smile' over Thorpe Forest, Norfolk, UK.
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A Cirrus filled sky sparkles over Seattle, US.
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A hairy Witch spotted over Eugene, Oregon, US.
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A ghostly character takes flight over Napa, California, US.
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