Important to the buildup of hailstones is the existence in thunderhead clouds of supercooled water: water that remains in liquid form well below normal freezing temperature.
(Important to the buildup of hailstones; is; the existence in thunderhead clouds of supercooled water) (water; remains; in liquid form well below normal freezing temperature)
Important to the buildup of hailstones water
is remains
the existence in thunderhead clouds of supercooled water
in liquid form well below normal freezing temperature