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Cirrocumulus with signs of lacunosus within its formation, spotted over Somerset, England
Signs of asperitas and lacunosus spotted over North Dundas Township, Ontario, Canada
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Cirrocumulus with signs of lacunosus, spotted over Rufford, West Lancashire, England
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Asperitas with signs of lacunosus spotted over Sacramento, California, US
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Cirrocumulus undulatus with signs of lacunosus, spotted over Lake Stevens, Washington, US
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Asperitas and lacunosus spotted in tandem over WInnipeg, Manitoba, Canada
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Patterns in the sky over Bangkok, Thailand
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Altocumulus lacunosus spotted over Turville, England
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Lacunosus spotted over Madison, Wisconsin, US
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Asperitas and signs of lacunosus spotted over Rochester, New York, US
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Lacunosus spotted over Gent Sint-Amandsberg, Belgium
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Dynamic iridescence spotted at sunrise over Brighton, Colorado, US
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Signs of supercilium and lacunosus spotted near Mercogliano, Italy
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Signs of lacunosus spotted over Cheyenne, Wyoming, US
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Lacunosus, a relatively rare and short-lived cloud formation, takes on the look of a honeycomb pattern of round holes with frayed edges. It is formed when a layer of rising warm air and a layer of cold air come into contact with one another, causing downdrafts that push through the cloud. This classic example was spotted by Alexia's friend, Bob Hunter, near Lexington, Virginia, US.
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Signs of larger shaped lacunosus spotted over Gibsons, British Columbia, Canada
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