Hailstone
qHail growth can be
thought of as occurring in two steps: (1) the formation of a hail
embryo and (2) the formation of the
hailstone.
qHail Embryos: are the ice particles that occupy the center of hailstones and serve as cores for their initial
growth.
qHailstones: are the final large stones composed of hand or spongy ice.
qEach step, hail embryo
formation and hailstone formation, requires
one up-down cycle through the storm clouds.