Hail is a form of solid precipitation. [1] It is distinct from ice pellets (American English "sleet"), though the two are often confused. [2] It consists of balls or irregular lumps of ice, each of which is called a hailstone. [3] Ice pellets generally fall in cold weather, while hail growth is greatly inhibited during low surface temperatures.

2025年1月2日 · hail, precipitation of balls or pieces of ice with a diameter of 5 mm (about 0.2 inch) to more than 15 cm (about 6 inches). In contrast, ice pellets (sleet; sometimes called small hail) have a diameter less than 5 mm.

2024年2月27日 · Hail consists of hard, solid balls of ice that form in strong thunderstorm updrafts, growing as they ascend and descend repeatedly, collecting layers of ice. Graupel is softer and forms when snowflakes collect and freeze supercooled water droplets, resulting in …

2024年10月2日 · These updrafts drag water droplets high up into the cloud where air temperatures are below freezing. This causes the water to freeze, creating small balls of ice.

Hail is a form of precipitation consisting of solid ice that forms inside thunderstorm updrafts. Hail can damage aircraft, homes and cars, and can be deadly to livestock and people. What we do: Read more about NSSL's hail research here. How does hail form?

2024年2月4日 · Hail is a type of solid precipitation that forms during thunderstorms. It consists of balls or irregular lumps of ice, known as hailstones. Unlike snow and sleet, hail is most common in the warmer months when strong thunderstorms are more frequent. How Does Hail Form?

2024年11月2日 · Hail forms through layers of ice accumulation in thunderstorms, resulting in balls up to tennis ball size. Graupel develops from a single freezing process of supercooled water droplets, creating smaller pellets 2-5 mm (0.07-0.2 inch) in diameter.

Hail consists of balls or irregular lumps of ice, each of which is called a hailstone. Many of us have experienced those hot summer days which start off with sunshine, before towering cumulonimbus clouds bubble up through the day, eventually bringing thunder, lightning and torrential downpours.

Hail is precipitation in the form of small ice balls or pieces with a diameter of 5 mm (about 0.2 inch) to over 15 cm (about 6 inches). This precipitation often accompanies thunderstorms. It can damage and destroy buildings, crops, machinery, and living things.

2018年2月27日 · Hail is a form of precipitation consisting of lumps with irregular shapes or balls of ice. Each ball of ice formed in this process is known as a hailstone. Hailstones resemble ice pellets; however, they vary in their formation.