As many as 25 layers have been counted in a single large hailstone. Hailsreak is the accumulation of hail in a long, narrow path along the ground. It forms following hail formation, weakening updraft and hailstones reaching the ground. It takes about 15 to 20 minutes from the formation of hail to the depositing hail at surface. Hail can break windows and dent cars, batter roofs of homes, but the most costly damage is to crops.
Hail damage is around hundred millions of dollars annually in the United Sates.
Hail frequency is not necessarily related to thunderstorm frequency. For example, Central Florida, experiences the highest frequency of thunderstorms in the US, is almost hail free region.