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hailstone

meteorology
Also known as: hail pellet, hail stone

Quick Summary

Hail is a form of precipitation consisting of balls or pieces of ice with diameters ranging from 5 mm (0.2 inches) to over 15 cm (6 inches). It typically forms in cumulonimbus clouds with strong updrafts, often accompanying thunderstorms. Large hailstones can have alternating layers of clear and opaque ice due to varying freezing rates. Hailstorms are most common in mid-afternoon in the mid-latitudes and usually last about 15 minutes. Hail can be extremely destructive to buildings, crops, and livestock.12

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