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Main Cloud Types
- Cumulus
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- 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
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- Intortus
- Lacunosus
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- Morning Glory Cloud
- Murus (Wall cloud)
- Mediocris
- Nacreous
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- Noctilucent
- Pannus
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- 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
On a crisp day with a temperature of -16 degrees Celsius (3 degrees Fahrenheit), sea smoke, a type of fog, developed as a result of the existence of a very cold and still air mass over water that is comparatively warm, as seen here near Nesbyen, Norway.
Undulatus spotted during the early morning over Devanahalli, Bangalore, India
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Sunrise over the Bay of Fundy from Refugee Cove, Nova Scotia, Canada
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Crepuscular rays emanating down during the evening near Charlo, Montana, US
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A soliatary "UFO-shaped" altocumulus lenticularis spotted by Craig's friend, Bernadette, over Lake Como, Italy
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Altocumulus lenticularis spotted over Krzeszowice, Poland
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Undulatus spotted over Northern California, US
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Altocumulus undulatus over the Outback near Coober Pedy, Australia
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Sunrise over the Adirondack Mountains, Vermontville, New York, US
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Altocumulus undulatus with a lone cumulus fractus drifting by underneath, spotted over Marinatown, Fukuoka City, Japan
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A maple tree and a cirrus spissatus cloud formation, both with "fingers" extending outwards, as seen over Seattle, Washington, US
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Crepuscular rays highlighting smoke coming from Canadian wildfires, spotted near Whiteface Mountain, Adirondacks, New York, US
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A rainbow showing itself over North Brunswick, New Jersey, US
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Sunset over Brisbane, Australia
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Cumulus congestus in the foreground, along with a dissipating cumulonimbus in the background, spotted over North Devon, England
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A plethora of cirrus cloud formations spotted over Lake Stevens, Washington, US
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