Fallstreak hole - Wikipedia
A fallstreak hole (also known as a cavum, [1] hole punch cloud, punch hole cloud, skypunch, cloud canal or cloud hole) is a large gap, usually circular or elliptical, that can appear in cirrocumulus or altocumulus clouds.
Fallstreak - What Are They? - National Weather Service
A fallstreak hole (also known as a "hole punch cloud") is a large circular or elliptical gap that can appear in cirrocumulus or altocumulus clouds. How do they form? High to mid level clouds, such as altocumulus, are often composed of tiny water droplets that are much colder than freezing, but have yet to freeze.
What are hole-punch clouds, aka fallstreak holes? - EarthSky
2023年5月14日 · But jets can cause a different type of cloud feature, called hole-punch clouds, aka fallstreak holes. They look like abrupt clearings in an altocumulus cloud layer, often circular patches...
Fallstreak Clouds | NESDIS
Fallstreak holes, also known as hole punch clouds, are a “supercool” phenomenon, where large circular or elliptical gaps appear in mid- to high-level cirrocumulus or altocumulus clouds.
Fallstreak Hole Explained: What Is Skypunch and How ... - Science …
2024年5月31日 · Fallstreak holes are huge circular or elliptical gaps that can appear in cirrocumulus or altocumulus clouds. When seen from below, they can look like a large cavity that has been neatly carved...
Making Sense of Holes in the Clouds - NASA Earth Observatory
2024年2月25日 · Cavum, also called hole-punch clouds and fallstreak holes, look so odd that people sometimes argue they are signatures of flying saucers or other unidentified anomalous phenomena. Seen from below, they can look like a large circle or ellipse has been cut neatly from the clouds, with feathery wisps left in the middle of the hole.
Fallstreak Holes: What They Are And How They Form - Own Your …
2024年4月29日 · Fallstreak holes are large circular or oval-shaped openings that form in cirrocumulus or altocumulus clouds when supercooled water is turned into ice crystals, causing the surrounding water droplets to evaporate. This occurrence is predominantly the result of aircraft passing through a cloud.
Cavum: Hole-punch Clouds - Geography Realm
2024年12月29日 · Cavums are also known as hole-punch clouds or fallstreak holes. These features often appear as large, circular gaps in an otherwise unbroken sheet of altocumulus or cirrocumulus clouds. What is a cavum?
How Hole-punch Clouds Work - HowStuffWorks
UFO theorists are right to an extent: Hole-punch clouds, also called fallstreak clouds, are caused by flying objects, but those objects are easily identifiable: airplanes. Hole-punch clouds occur within two types of common cloud layers: 1) cirrocumulus or 2) altocumulus clouds .
What Punched a Hole in these Clouds? | Weather.com
2013年1月28日 · These rare cloud formations, called "hole-punch clouds", develop in altocumulus cloud layers and are often the result of airplanes passing through the layer of clouds. So, how does this happen?