Learn why hail forms during summer thunderstorms, how hailstones grow, and how the torro hailstorm intensity scale measures hail damage.. Hail formation requires environments of strong, upward motion of air within the parent thunderstorm (similar to tornadoes) and lowered heights of the freezing level.
Sometimes called small hail) have a.. Find hail damage quickly with unlimited hail paths and affordable swath maps from hailstrike.