An example of a hailstorm is one that could crack car windows with the balls of hail.
We were on outpost on a ridge when a terrible hailstorm broke on us.
This comment triggered a hailstorm or criticism from around the world.
On April 23rd we had a hailstorm with what may well be the biggest hailstones I have ever seen.
On the 13th, there was a damaging hailstorm in south Devon.
You may also need to consider stopping a game temporarily due to adverse weather conditions such as thunder and lightning or a sudden hailstorm.