A hail storm, also known as a hail shower, is a weather event characterized by the falling of ice pellets from the sky. These pellets can range in size from small marbles to the size of a baseball. In some parts of the world, a hail storm is also referred to as a hailstone storm or a hail squall. Another term used to describe a hail storm is a ice storm, which is a weather event that is characterized by freezing rain and the accumulation of ice on roads and other surfaces. In some regions, hail storms are also known as thunderstorms, as they often occur together with thunder and lightning.