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Other Clouds
- Arcus
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- 'Supercilium' (not official classification)
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Optical Effects
- 22° Halo
- 46° Halo
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- Parry arc
- Parry infralateral arc
- Parry supralateral arc
- Rainbow
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- Sub-sun
- Suncave parry arc
- Sun dog (Parhelion)
- Sun pillar
- Supernumerary bows
- Subparhelic circle
- Supralateral arc
- Upper tangent arc
- Wegener arc
Lacunosus, a rare, short-lived formation, is identified in terms of the gaps between cloud elements, rather than the clouds themselves. It is when a cloud layer is composed of more or less regular holes, around which fringes of cloud form, like a net or rough honeycomb. The holes of this variety are formed by sinking pockets of air, and the cloud fringes around them by air rising up between the pockets to replace them. Such sinking can occur when a layer of cooler air finds itself over a warmer one. Being more dense, the cooler air sinks down through the warmer air. This classic example was spotted on a cold morning over Priddy, Somerset, England.
Pileus with iridescence spotted over Mantua, New Jersey, US
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A notable storm system in an area that Santiago described as formerly being desolate without any vegetation. Over the past few decades, Chinese forest rangers planted trees and gradually nurtured the environment back to life. Today, there are endless stretches of lush forest farms, as seen here near the Saibangba Forest Farm, Weichang County, Chengde City, Hebei Province, China.
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During a dry stretch, Linda was seeking rain, but it did not come to fruition with these particular clouds over Austin, Texas, US
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Signs of asperitas over Mount Hope Cemetery, Mapleton, Iowa, US
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A cascade of clouds over the Georgetown airport in Central Texas, near Georgetown, Texas, US
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Cumulus and stratus clouds co-existing near the mountains, spotted by Anuja's brother, Nikesh Sinha, while on a Kashmir Great Lakes trek near Zaj Pass, Kashmir, India
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Altocumulus over the Atlantic Ocean, near Porthmeor Beach, St Ives, Cornwall, England
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Crepuscular rays over Khomeynishahr City, Esfahan, Iran
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Cumulus humilis spotted during the late afternoon while visiting the lavender fields at Banstead, Surrey, England
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A cloud that looks like a large fish chasing a school of fleeing smaller fish, spotted over Atagohama, Fukuoka City, Japan
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A face in the sky gazing at a contrail, which looks to be an extension of the fishing pole, spotted over the Rogerstown Estuary, County Dublin, Ireland.
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A storm system with praecipitatio over Torrejon de Ardoz, Spain
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Cumulus spotted throughout the sky, over Randolph, Iowa, US
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A dynamic display of altocumulus lenticularis near Mt. Madison and Mt. Adams in the Northern Presidential Range, New Hampshire, US
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Altocumulus perlucidus spotted over Devanahalli, Bangalore, India
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