Cirrus castellanus - More vertically developed than cirrus floccus, cirrus castellanus have turret-like tops and are taller than they are wide. Cirrus Clouds thin and wispy The most common form of high-level clouds are thin and often wispy cirrus clouds.These have a more cotton wool-like appearance than the rest of the cirrus family Cirrus floccus - Ragged cirrus patches which are much larger than cirrocumulus floccus.A thick, dense cirrus layer that dominates much of the sky above, often formed by passing warm fronts or the remnants of a cumulonimbus incus Cirrus spissatus - These clouds sit right at the top of the troposphere.These wispy streaks of cirrus cannot be seen without a characteristic 'flick' at the end of its tail Cirrus uncinus - With its trademark hook shape, cirrus uncinus is famous for looking like a horse's tail.They are usually located 20,000 feet above the ground and are known for their thin and wispy appearance. These are the most common type of cirrus cloud Cirrus clouds are thin wispy clouds found at high elevations in the atmosphere. Cirrus fibratus - Thin and fibrous, cirrus fibratus are often aligned with the high altitude wind direction, making for white parallel stripes which streak across the sky.How do we categorise cirrus clouds?Ĭirrus clouds have five defined 'species' Search for crossword clues found in the Daily Celebrity, NY Times, Daily Mirror, Telegraph and major publications. Technically these clouds produce precipitation but it never reaches the ground. Instead, it re-evaporates, creating virga clouds. Answers for cirrus clouds shape crossword clue, 4 letters. They often form in advance of a warm front, where the air masses meet at high levels, indicating a change in the weather is on the way. What weather is associated with cirrus clouds? These streaks can spread out and become cirrus, cirrostratus and cirrocumulus. Cirrus is made up completely of ice crystals, which provides their white colour and form in a wide range of shapes and sizes.Ĭirrus clouds can also form through contrails, the vapour trails left by planes as they fly through a dry upper troposphere. How do cirrus clouds form?Ĭirrus clouds form from the ascent of dry air, making the small quantity of water vapour in the air undergo deposition into ice (to change from a gas directly into a solid). While the Sun is setting or rising, they may take on the colours of the sunset. In the daytime, they are whiter than any other cloud in the sky. These delicate clouds are wispy, with a silky sheen, or look like tufts of hair. Send us feedback.Cirrus clouds are short, detached, hair-like clouds found at high altitudes. They are commonly known as mares tails because. These example sentences are selected automatically from various online news sources to reflect current usage of the word 'cirrus.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Cirrus clouds are made of ice crystals and look like long, thin, wispy white streamers high in the sky. 2021 Unfortunately, Rowan-Robinson admitted in a recent research paper that the observations are not high quality and that the region of sky they were captured in is made of filaments of gas known as cirrus. Because they form at high altitudes and cold temperatures, cirrus clouds emit less long-wave radiation to space than does a cloud-free atmosphere. Smith, Milwaukee Journal Sentinel, 4 Dec. The text enclosed in grey-shaded boxes, like this example, comprises Annex I to the Technical Regulations (WMO-No. These clouds have a fibrous (hair-like) appearance, or a silky sheen, or both. Wired, 28 July 2022 The three main types are cirrus, cirrostratus and cirrocumulus.Īnna Kaufman, USA TODAY, 17 July 2022 One moment the November sky above Cedar Grove Ornithological Research Station was an inert cobalt canvas streaked with a few white cirrus clouds. Detached clouds in the form of white, delicate filaments or white or mostly white patches or narrow bands. 2022 At those frigid heights, some of the particles become nuclei around which condensation gathers and then quickly freezes, helping to produce puffy contrails that either vanish or persist as wispy, high-altitude cirrus clouds. 2022 When the cirrus clouds are lit with color, they can be mistaken for iridescence, according to the NWS.Ĭaitlin O'kane, CBS News, 12 Aug. 2022 So cloud iridescence usually happens in lenticular or alto-cumulus, cirrus and cirrocumulus clouds.Ĭaitlin O'kane, CBS News, 12 Aug. 2022 Crown Lands singer/drummer Cody Bowles commands cirrus-scaling pipes and hot beats. Gerry Díaz, San Francisco Chronicle, 26 Oct. Recent Examples on the Web This will make for the return of puffy cumulus clouds and wispy cirrus clouds to Northern California’s skies as these gusty winds waver into the gaps and valleys of the San Francisco Peninsula.
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