Today is World Meteorology Day, so we’re high up in the atmosphere, above the clouds, for a satellite view of fallstreak holes. These gaps in the clouds are sometimes called hole-punch clouds. The holes form when supercooled water droplets suddenly freeze—often when a plane flies through the cloud—and then fall, leaving an opening in the formation. Scientists are still gaining new insights on how fallstreak holes form and behave.
What happened to these clouds?
Today in History
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Bản Giốc–Detian Falls, Vietnam
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Devils Tower National Monument, Wyoming
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Navy Pier, Chicago, Illinois
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Trunks stick together
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Avalanche Lake Trail at Adirondack High Peaks, New York
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50 years of Earth Day
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Cranborne Chase, England
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Eurasian red squirrel in Northumberland, England
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Temple of Philae, Aswan, Egypt
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A tower of light
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Torres del Paine National Park in Patagonia, Chile
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The cycle begins anew
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Plate ice along Lake Superior, Grand Marais, Minnesota
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Bridge of Hillsborough County
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Beech trees and wild anemones, Jutland, Denmark
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Pearl of the Adriatic
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Navajo Bridge in Marble Canyon
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World Nature Conservation Day
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National Lighthouse Day
Bing Wallpaper Gallery

