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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 view from the Danube River, near Linz, Austria
A storm system with signs of lacunosus over Denver, Colorado, US
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Valley fog accompanied by clouds above, spotted near Sappada, Italy
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A dissipating storm system at sunset over Esmeralda County, Nevada, US
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A mature cumulonimbus spotted over the Sawatch Range, near Buena Vista, Colorado, US
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A storm system over Crank, St Helens, Merseyside, England
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Asperitas prior to the arrival of a thunderstorm over Curtin, Canberra, Australia
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A view of the storm from a single engine Cessna at 4,500 feet above Lac du Flambeau, Wisconsin, US
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Asperitas following a storm over Bismarck, North Dakota, US
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A developing and expansive storm approaching Marina di Pisciotta, Italy
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An approaching storm near Old Orchard Beach, Saco, Maine, US
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A storm system that was accompanied by strong winds, rain, and hail, near Sumirago, Varese, Italy
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A storm system over the Rhine River, near Cologne, Germany
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A developing storm over the Olympic Peninsula and Puget Sound, viewed from Discovery Park, Seattle, Washington, US
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An afternoon downpour near Charlo, Montana, US
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Cumulus congestus over the Atlantic Ocean, viewed from Myrtle Beach, South Carolina, US
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