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Main Cloud Types
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Other Clouds
- Arcus
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- Cap / banner clouds
- Capillatus
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- Cavum (Fallstreak hole)
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- Translucidus
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- Uncinus
- Undulatus
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- 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 flat band of rainbow hues known as a circumhorizon arc, spotted on a flight from a flight over the Pacific Ocean off the east coast of Japan.
Cirrus uncinus over the Adriatic Sea, near San Cataldo, Lecce, Italy
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Lacunosus, a short-lived cloud formation, was spotted over North Devon, England
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Distrail spotted over Washington D.C., US
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Cirrus clouds amidst the blue sky over Isle of Harris, Scotland
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A classic and vivid example of cirrus uncinus over Somerset, England
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Cirrus spissatus spotted over Oahu, Hawaii, US
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Circumzenithal Arc spotted over Brighton, Colorado, US
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Altocumulus lenticularis duplicates with cumulus fractus in the foreground, spotted over Patagonia, Argentina
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Cirrus uncinus on grand display near San Luis Obispo, California, US
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Circumzenithal Arc spotted by Moriah's 11-year-od brother, Anthony, who captured this image near Antelope Valley, California, US
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Cavum (Fallstreak Hole) spotted over Lynchburg, Virginia, US
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A grand display of virga, following a day that Martha described as being filled with cirrus uncinus, spotted over Asheville, North Carolina, US
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Cirrus spissatus, which is a thick cirrus cloud, is often accompanied by other species of cirrus clouds within close proximation. These clouds can be formed by a conglomerate of cirrus clouds at high altitudes, and separate from that origin, they can also form from the remnants of a dissipating thunderstorm that once had a fibrous top. This example of cirrus spissatus was spotted over Thumrait, Southern Oman, near the Yemeni border.
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Cirrus uncinus over Charlotte, Michigan, US
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Cirrus uncinus over Sanxia District, New Taipei City, Taiwan
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