Calgary lies within Alberta's Hailstorm Alley and is prone to damaging hailstorms every few years. Hailstorms are not uncommon, but a serious hailstorm has not happened for many years. Any form of thunderstorm that produces precipitating hailstones is known as a hailstorm. Any thunderstorm which produces hail that reaches the ground is known as a hailstorm. Any thunderstorm that produces hail that reaches the ground is known as a hailstorm. One such storm was the 1999 hailstorm, which produced massive hailstones up to in diameter. The tornado was accompanied by a hailstorm. The tornado was preceded by a hailstorm and a sudden drop in temperature. In July 2016, Pine Bluffs was battered by a severe hailstorm, causing widespread damage. At the heart of their hurtling hailstorm lies Steve Fellows' punishing baritone. The 1947 Sydney hailstorm was a natural disaster which struck Sydney on 1 January 1947. There were more than 40,000 hailstorm claims of homeowner and automobile damage. On March 18, 2013, a severe hailstorm hit the Jackson metro area. For example, there was a severe hailstorm on 9 October 2007. The right hand windows were damaged during a hailstorm in 1520 and replaced in 1868.