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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
Sunset over Crank, St Helens, Merseyside, England
Stratus, a relatively featureless, grey overcast layer, with its base generally no higher than 1,500ft from the ground, as seen here over Crank, St Helens, Merseyside, England
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Virga in the distance, spotted near Crank, St. Helens, Merseyside, England
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Northern Lights (Aurora Borealis) over Crank, Merseyside, England
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Supernumerary bows, which consist of tiny fringes inside the primary bow, along with a secondary bow, spotted near Crank, Merseyside, England
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Cumulus congestus, accompanied by cumulus fractus in the foreground, over Passirac, France
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A mix of asperitas and lacunosus over Crank, Merseyside, England
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Altocumulus lenticularis and cumulus sharing the sky over Mount Vesuvius, Campania, Italy
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A red rainbow amidst the stratocumulus clouds over Crank, Merseyside, England
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Altocumulus clouds during sunset over Crank, Merseyside, England
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A colorful sky during sunset over Crank, England
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Crepuscular rays over Crank, Merseyside, England
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Virga trails over mount Teidi National Park, Tenerife.
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Mount Teide emerging from a sea of stratus in Tenerife.
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A sunset over Akranes, Iceland.
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Lenticularis over Husavic, Iceland.
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