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Main Cloud Types
- Cumulus
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- 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 well-defined arcus marks the leading edge of this storm system, which is accompanied by asperitas and signs of lacunosus, near Fort Wayne, Indiana, US
A storm system near Savannah, Georgia, US
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An approaching storm system near Brighton, Colorado, US
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A developing and expansive storm approaching Marina di Pisciotta, Italy
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An imposing storm which Lisa spotted from her boat, near Åland Islands, Finland
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The development of what appears to be an arcus, also known as a shelf cloud, marking the leading edge of a storm system near Lam Plai Mat, Thailand
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The leading edge of a storm system near Paynesville, Minnesota, US
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A storm system with a leading arcus, otherwise known as a shelf cloud, near Brighton, Colorado, US
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A storm system near Rogerstown Estuary, Dublin, Ireland
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A storm system moving over farmland near Randolph, Iowa, US
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Arcus, also known as a shelf cloud, ushering in a storm near Montevideo, Uruguay
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An arcus formation within a dissipating storm system near Campbelltown, Central Victoria, Australia
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Arcus, also known as a shelf cloud, marks the leading edge of a storm system near The Entrance North, New South Wales, Australia
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A storm system with a well-developed arcus, also known as a shelf cloud, near Cotia, Sao Paolo, Brazil
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Arcus, also known as a shelf cloud, ushers in precipitation from a storm over New Brighton Beach, Christchurch, New Zealand
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A roll cloud, which is a form of an arcus cloud, spotted near the North West Shelf off of Western Australia
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