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Main Cloud Types
- Cumulus
- Stratus
- 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
The marine layer that often graces the flanks of the mountain during the month of August, also known as "Fogust" per Anthony's description, seen near Mount Tamalpais, Marin County, California, US
A reflection of the sunset near Seaside, Oregon, US
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A view of dawn from above the Baltic Sea, near Riga, Latvia
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Altocumulus lenticularis over Tain, Easter Ross, Scotland
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A colourful sky captured by John's friend, Aldo Brando, in Colombia, South America
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Sunrise over Catamount Mountain, Adirondacks, Vermontville, New York, US
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Multiple contrails over Almere, Netherlands
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Sunset with fragmented contrails over Monte Rosa, near Sumirago, Varese, Italy
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Sunset along the beach, spotted by Reven's daughter, Isla, over Canggu Beach, Indonesia
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A giant "cloud bird" flying across the sky over Crank, St Helens, England
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A vibrant sunset over Twin Lakes Recreation Area, Columbia, Missouri, US
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Moonset with some faint altostratus over Bluff, Utah, US
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A "bird" in the sky over Gibraltar, British Overseas Territory
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Sunrise with cirrostratus near San Leandro, California, US
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Remnants of a contrail spotted over Central Portugal
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Undulatus that shows signs of lenticularis, spotted by Jeremy's daughter-in-law over West Sussex, England
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