The temperate level experiences rainstorms, hailstorms, and fog. In addition, this region has various amounts of hailstorms, blizzards, tornadoes, and dust storms. Calgary lies within Alberta's Hailstorm Alley and is prone to damaging hailstorms every few years. Late afternoon thunderstorms and hailstorms are frequent. Thunderstorms, hailstorms, snowstorm, lake effect snow, and freezing rain are also commonplace for this city. He has conducted more than 10,000 damage surveys of hailstorms, tornadoes, and hurricanes. Rain is more frequent during spring; summer is subject to thunderstorms and, occasionally, violent hailstorms. The UK organisation, TORRO, also scales for both hailstones and hailstorms. Depending on a witch's preference, they were believed to cause tempests, hailstorms, and lightning. The 1910 vintages was afflicted by hailstorms and flooding. The 1910 vintages was particularly troublesome with hailstorms and flooding. However, the weather was appallingly bad, cold with heavy rain and hailstorms. Showers or hailstorms occur in this month too. This is a list of the costliest or deadliest hailstorms on record. Hailstorms have been the cause of costly and deadly events throughout history.