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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 trademark of a strong cumulonimbus cloud is the overshooting top, a "cauliflower-like" cloud structure extending above the anvil of the storm like a dome. Overshooting tops develop on thunderstorms that have powerful updrafts and they typically develop on Cumulonimbus capillatus incus, as spotted here near Sherman, Illinois, US.
22-degree halo spotted over Petaluma, California, US
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Subtle crepuscular rays and iridescence spotted over the Carneddau Range, Conwy, Wales
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A plethora of optical phenomena spotted at sunrise over Baltimore, Maryland, US
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22-degree halo with signs of a tangent arc and a sun dog (parhelion), spotted over Veurne, Belgium
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Stormy skies over Badalona, Spain
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Altocumulus spotted during the morning over Fixin, Burgundy, France
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On a meaningful anniversary, Modestino spotted this Sun dog (Parhelion) in the early morning over Mercogliano, Avellino, Italy
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A contrail from the SpaceX Falcon 9 rocket launch at Vandenberg Space Force Base, spotted from Santa Barbara, California, US
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Stratocumulus spotted over Liberty Hill, Texas, US
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Altocumulus perlucidus spotted over Lucaston, Tasmania, Australia
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A unique view of Altocumulus lenticularis by way of a 2.5-minute long exposure photograph over the San Juan River, near Bluff, Utah, US
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A mixed sky over Seattle, Washington, US
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A dissipating storm in the foreground in contrast with a developing one on the horizon, spotted near Moss Landing, California, US
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A broad area of virga spotted in low humidity conditions near Brighton, Colorado, US
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A colourful sunset over Conwy, North Wales
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