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Main Cloud Types
- Cumulus
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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
A sighting of asperitas clouds over Hiawatha (just outside of Cedar Rapids), Iowa, US.
Altocumulus lenticularis over Khomeyni Shahr, Iran
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Contrail above the lower cumulus fractus, spotted over New Taipei City, Taiwan
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Altocumulus lenticularis with crepuscular rays and shadows at sunset over Brighton, Colorado, US
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Sunset over Denver, Colorado, US
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Contrail over South Brent, United Kingdom
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Stratocumulus undulatus over Arlington, Virginia, US
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Altocumulus undulatus with signs of virga, spotted near Anaheim, California, US
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Circumhorizon Arc along with virga in the distance, spotted while driving on I-90 in Montana, US
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Storm system with heavy precipitation over Mercogliano, Italy
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Walking on a sunny November day, Joan and friends spotted this angel, complete with a halo, over Point Nepean National Park, Portsea, Victoria, Australia
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Cumulus fractus near Esfahan, Iran
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A contrail that appears to be coming out of the building's chimney, spotted over Twillingate, Newfoundland, Canada
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Altocumulus over Marion, United States
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A colorful mosaic over Lake Stevens, Washington, US
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Cumulus fractus ovre Hualien County, Taiwan
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