Why does it hail? Why does it hail?

It hails because when the updraft can't support the hail, it falls from the clouds. There is hail because of air convection, and water vapor will condense into ice particles after rising and cooling with the airflow.

The water on the local surface evaporates and rises into the air, condensing into a cloud containing a lot of water vapor. When encountering cold air without condensation nuclei, water vapor condenses into ice or snow, which means it snows. If the temperature drops sharply, it will form a bigger ice mass, which is hail.

Extended data:

Formation condition

1. There must be a rather thick unstable layer in the atmosphere.

2. Cumulonimbus clouds must develop to a temperature that can freeze a single large water drop (generally, the temperature is-12 ~- 16℃).

3. To have strong wind shear, the vertical thickness of the cloud should not be less than 6 ~ 8 kilometers.

5. Cumulonimbus clouds are rich in water. Generally, it is 3 ~ 8 grams per cubic meter, and there is an accumulation area of liquid supercooled water above the maximum rising speed. There should be inclined, strong and uneven updraft in the cloud, generally above10 ~ 20m/s. ..

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