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Other Clouds
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- Volutus (Roll cloud)
Optical Effects
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- Sun dog (Parhelion)
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- 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.
Cumulonimbus spotted in the distance over M4 while driving east out of Wales
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Cirrus uncinus over Lelant, England
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The last sun rays of the day shining on the base of low level clouds over Brighton, Colorado, US
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Cumulus over South Carolina, US
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A storm system over New Taipei City, Taiwan
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Cumulus amidst the blue sky over Shenzhen City, Guangdong Province, China
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A sunset that reminded Junichi of jewels scattered across the sky, spotted over Marinoa City, Fukuoka City, Japan
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Stratocumulus spotted from the campus of Santa Barbara City College, Santa Barbara, California, US
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Crepuscular rays at sunset over Taiwan
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Sunset as seen from near The Burr Oak Tree, Boone County, Missouri, US
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Sun Dog (Parhelion) spotted over Seoul, South Korea
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Clouds that appear to originate from the belfry of the Cathedral of Our Lady of the Assumption, Oaxaca, Mexico
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Since childhood, Anahí felt drawn to clouds and spent hours watching them transform. This image of a storm system was captured near the city of Colón on the Uruguay River in the province of Entre Ríos, Argentina.
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Indications of a roll cloud (volutus), which separated from an ensuing storm, spotted while traveling north towards Minnesota, along I-35 in Iowa, US
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Primary and secondary bows spotted over Haarle, The Netherlands
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