Brief introduction to the causes of hail

The causes of hail formation are briefly as follows:

1. When cumulonimbus clouds appear in summer, the temperature in the upper part of the top floor will drop to MINUS 30 degrees Celsius to MINUS 50 degrees Celsius.

2. The upper cloud is composed of ice crystals, the lower cloud contains supercooled water droplets, and there is a warm layer with a lot of water droplets above 0 degrees Celsius.

3. Ice crystals enter the icy water drop layer during the falling process, and water freezes on the surface of the ice crystals, forming white hail.

4. Hail continues to fall to the warm layer containing water droplets, and the water droplets freeze on the hail surface again.

When the updraft can't bear its weight, the hail will fall to the ground.

Summer or the turn of spring and summer is the most common. It is some ice particles as small as mung beans and soybeans and as big as chestnuts and eggs.

Introduction to hail:

Hail often occurs in February-May when cold and warm air meet fiercely, and may also land in a strong and persistent thunderstorm in midsummer. Every year, all parts of China are hit by different degrees of hail.

Especially in the mountainous and hilly areas in the north, the eastern part of the Qinghai-Tibet Plateau and the Yunnan-Guizhou area, the terrain is complex, the weather is changeable and there are many hail, which is very harmful to agriculture.

Heavy hail destroyed crops and houses, injured people and killed livestock. Extraordinary hail is bigger than grapefruit, which will kill people, destroy a large area of farmland and trees, and destroy buildings and vehicles. It has powerful lethality. Hail disaster is one of the serious natural disasters in China.