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Other Clouds
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Optical Effects
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An abundance of distinct fallstreak holes (cavum), also known as 'hole punch clouds', are formed when supercooled water droplets freeze into ice crystals and fall out, often triggered by a passing airplane. These classic examples were spotted over Prescott Valley, Arizona, US.
A contrail and a distrail, along with signs of a fallstreak hole (cavum), spotted over Falls Church, Virginia, US
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Fallstreak Hole (Cavum) with falling ice crystals, spotted near Elsenham, London Stansted Airport, England
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A unique view of two Fallstreak Holes (Cavum), along with the sun located 'in' the smaller one, spotted over Harkness State Park Beach, Waterford, Connecticut, US
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Fallstreak Hole (Cavum) spotted over Sedro Woolley, Washington, US
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Fallstreak Hole (Cavum) spotted near the time of sunset, over Athens, Georgia, US
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Fallstreak Hole (Cavum) in the shape of a heart and with a view of the blue sky, spotted following a week of rain in Waikiki, Honolulu, Hawaii, US
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Remnants of a Fallstreak Hole (Cavum) spotted by Peter's friend, Valerie, over Bentworth, England
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Iridescence upon altocumulus clouds over Cherry Hill, New Jersey, US
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Remnanats of a fallstreak hole (cavum) spotted over Westbury sub Mendip, England
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Fallstreak Hole (Cavum) spotted over Pennsylvania, US
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A larger fallstreak hole (cavum) accompanied by a smaller one, spotted over Arlington, Washington, US
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Fallstreak Hole (Cavum) spotted over Conwy, North Wales
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A classic example of a fallstreak hole (cavum) within a layer of altocumulus, with signs of iridescence near the leading edge of the descending ice crystals, spotted over Lyons, Oregon, US
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Fallstreak Hole (Cavum) spotted over Acton, Dorset, England
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An elongated fallstreak hole (cavum) spotted over Montauriol, France
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