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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
Stormy skies over Argüello Córdoba, Argentina
Cumulonimbus with an arcus outlining the leading edge of the storm, accompanied by pannus, spotted by John's friend, Will Werner, in Brazil
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Virga with a subtle rainbow spotted over the Adirondack Mountains, Vermontville, New York, US
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Following a humid day, a notable storm developed over the Tasman Sea, near Manly, New South Wales, Australia
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Pannus beneath a storm system, spotted over Los Alamos, New Mexico, US
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Cumulonimbus spotted near Weston-super-Mare, Somerset, England
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A notable storm system accompanied by pileus, spotted from a regional train just north of Sydney, Australia
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Cumulonimbus with signs of mammatus (mamma) and pannus, spotted over Bigfork, Montana, US
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A storm system near Port Bourgenay, La Vendée, France
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A storm system near Naperville, Illinois, US
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A storm system over San San Carlos Bay, Sonora, México
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Since childhood, Anahí felt drawn to clouds and spent hours watching them transform. This image of a storm system was captured near the city of Colón on the Uruguay River in the province of Entre Ríos, Argentina.
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Pannus associated with a storm system, spotted over Tucson, Arizona, US
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A perspective of the clouds that appears to show them emanating from the top of McCracken Mesa, spotted at sunset during the monsoon season, near Bluff, Utah, US
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Moisture from the remnants of a Pacific Basin tropical cyclone crossing into Las Cruces, New Mexico, US
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The edge of a storm system near Sumirago, Varese, Italy
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