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Main Cloud Types
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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
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- Flammagenitus (Pyrocumulus)
- Floccus
- Fluctus (Kelvin-Helmholtz)
- Fractus
- Homogenitus
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- Lacunosus
- Lenticularis
- Mamma
- Morning Glory Cloud
- Murus (Wall cloud)
- Mediocris
- Nacreous
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- 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 Sunset over Snowdonia, North Wales.
2 thoughts on “John Rowlands”
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Pileus, also known as a cap cloud, can develop above rapidly rising cumulus or cumulonimbus clouds, as spotted here by Genevieve's father during an evening walk in Minneapolis, Minnesota, US
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Circumzenithal Arc spotted over Antelope Valley, California, US
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Altocumulus radiatus over Vancouver, Washington, US
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Signs of asperitas which was accompanied by wildfire smoke in the air, spotted near Bluff, Utah, US
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A developing storm near Winthrop, Washington, US
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Stratocumulus undulatus at sunset over Hadfield, Derbyshire, England
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Mammatus (Mamma), often associated with thunderstorms, are indicative of sinking cold air that's carried into warmer air layers and create the characteristic bumpy, rounded appearance, as seen here over Hovell's Creek, Geelong, Victoria, Australia.
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Cumulonimbus that produced intermittent bursts of blustery rain near Cotswolds, England
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Stratocumulus over Taguatinga, Brasília, Brazil
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Layers of clouds over Pocheon, Gyeonggi Province, South Korea
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A fish chasing the vanishing sun, spotted over Tucson, Arizona, US
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A mixture of cumulus over Seoul, South Korea
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A night that was filled with sound and light, reflected here by the visible cumulonimbus due to the ongoing lightning strikes, captured by Courtenay's friend, Jack Canter, near Boman, South Carolina, US
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Stunning crepuscular rays over Abruzzo National Park, near Villetta Barrea, Italy
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Mammatus (Mamma) spotted by Sara's niece over Montana State University, Bozeman, Montana, US
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Oooh! Beautiful! Love the pile upon pile of the lenticularis. Well, the whole scene actually! Thank you.
Love this photo. Snowdonia is a wonderful place, and this picture adds to it’s mystique.