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Main Cloud Types
- Cumulus
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- 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 blanket of Altocumulus stratiformis as viewed from above the clouds, spotted over Lake Michigan on approach to O'Hare International Airport, Chicago, Illinois, US
Sunset viewed from above, on a flight from Chicago, Illinois, to Columbia, Missouri, US
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Sunset reflected on an icy lake, spotted at Twin Lakes Recreation Area, Columbia, Missouri, US
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Sunset over a wintry tidal marsh on the North Shore of Nova Scotia, Canada.
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Following consecutive days of overcast weather, the sun made an appearance during the late afternoon, to contribute towards a colourful sunset over Bonnie View Nature Sanctuary, Columbia, Missouri, US
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Autumn view of Altocumulus stratiformis, spotted from Pinnacles Youth Park, Boone County, Missouri, US
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Autumn sunset spotted near The Big Tree, Boone County, Missouri, US
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An autumn sunrise near "The Big Tree" in Boone County, Missouri, US
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A vivid rainbow accompanied by mammatus (mamma), spotted from the National Center for Atmospheric Research’s (NCAR) Mesa Laboratory, near Boulder, Colorado, US
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Altocumulus lenticularis spotted at sunrise over the Flatirons, south of Boulder, Colorado, US
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Developing storms in the sky around Boulder, Colorado, US
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Sunset as seen from near The Burr Oak Tree, Boone County, Missouri, US
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Cumulonimbus over Columbia, Missouri, US
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A view of the sunrise over the US Capitol from the National Mall, Washington D.C., US
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A storm system spotted from the High Ridge Trail at Rock Bridge State Park, near Columbia, Missouri, US
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Asperitas with lacunosus spotted by Jeffrey while re-deploying a gas analyzer on the MOFLUX tower that measures the breathing of the forest, near Baskett Forest, Boone County, Missouri, US
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