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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
A rare capture of the elusive Green flash at sunset, spotted from Ala Moana Beach, Oahu, Hawaii.
One thought on “Dennis Olson”
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Remnants of a storm spotted in the evening over Terling, Essex, England
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A view of virga dissipating from a lone cloud, spotted during a flight on approach into Brisbane, Australia
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Altocumulus spotted in the morning sky over São Paulo City, Brazil
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Crepuscular rays spotted near Conwy, North Wales
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Cumulus humilis drifting by during sunrise over the Atlantic Ocean, near Boca Raton, Florida, US
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Cumulus congestus spotted over Madison, Wisconsin, US
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Mammatus (Mamma) spotted over St John's College, Cambridge, England
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Cirrostratus homogenitus, also known as a spreading contrail, spotted over Pietracorbara, Cap Corse Peninsula, Corsica, France
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Undulatus spotted at sunset over Torrejón de Ardoz, Spain
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A mixed sky over Hocksauerlandkreis, North Rhine-Westphalia, Germany
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A reflection of an hypnotic sky, spotted by Bill's granddaughter on the shore of Lake Michigan, US
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Fallstreak Hole (Cavum), which occurs when supercooled water droplets freeze, creating ice crystals that become heavy and fall below as virga. This classic example was spotted over Maroochydore, Queensland, Australia.
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22-degree halo spotted above Cumulus congestus, near the University of Missouri, Columbia, Missouri, US
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A classic example of Mammatus (Mamma) spotted over Denver, Colorado, US
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Stratocumulus spotted over northwest Iran
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What are the chances! Capturing this very rare green flash in this magnificent composition. Well done!