The raindrops freeze and are bounced around in the powerful winds within thunderclouds while new layers of ice are added. Eventually, the hailstones grow too heavy to be supported by the updrafts and fall to the ground. Some hailstones are the size of peas while others can be as big as grapefruits. Take cover when hail begins to fall. Do not go out to cover plants, cars or garden furniture or to rescue animals.
Hail comes down at great speed, especially when accompanied by high winds.
Although no one in Canada has ever been killed by hail, people have been seriously injured by it.