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Hail is a form of solid precipitation. [1] It is distinct from ice pellets (American English "sleet"), though the two are often confused. [2] It consists of balls or irregular lumps of ice, each of which is called a hailstone. [3] Ice pellets generally fall in cold weather, while hail growth is greatly inhibited during low surface temperatures.
Using “a huge database” of real hailstone shapes to look at how mass, shape and size are related, researchers found a hailstone in the typical roundish shape could reach roughly 10 inches in ...
One hailstone that fell in Texas on April 28, 2021, set a new state record at 6.4 inches in diameter, and Colorado set its state record with a 5.25-inch stone that fell on Aug. 8, 2023.
The hailstone then may undergo 'wet growth', where the liquid outer shell collects other smaller hailstones. [41] The hailstone gains an ice layer and grows increasingly larger with each ascent. Once a hailstone becomes too heavy to be supported by the storm's updraft, it falls from the cloud. [42]
Graupel (/ ˈ ɡ r aʊ p əl /; German: [ˈɡʁaʊpl̩] ⓘ), also called soft hail or hominy snow or granular snow or snow pellets, [1] is precipitation that forms when supercooled water droplets in air are collected and freeze on falling snowflakes, forming 2–5 mm (0.08–0.20 in) balls of crisp, opaque rime.
Storm trackers in the Texas Panhandle recovered a massive hail stone that researchers say is likely to be a new state record. Val and Amy Castor, veteran storm chasers with Oklahoma City ...
A megacryometeor is a very large chunk of ice which, despite sharing many textural, hydro-chemical, and isotopic features found in large hailstones, is formed under unusual atmospheric conditions which clearly differ from those of the cumulonimbus cloud scenario (i.e. clear-sky conditions).
A large hailstone, about 6 cm (2.4 in) in diameter. Hail forms in storm clouds when supercooled water droplets freeze on contact with condensation nuclei, such as dust or dirt. The storm's updraft blows the hailstones to the upper part of the cloud. The updraft dissipates and the hailstones fall down, back into the updraft, and are lifted up again.