What does the hail portend in winter?

Hail in winter is a sign of cold weather.

Hail in winter means that the temperature of water vapor in the clouds drops below zero degrees Celsius. Hail is also called "hail", commonly known as hail, and some areas are called Lengzi. It is some ice particles as small as mung beans and soybeans and as big as chestnuts and eggs.

When the temperature drops to a certain extent, the water vapor in the air is supersaturated, and if it encounters cold air, it will form a larger ice mass, which is hail. Hail disaster is one of the most serious disasters in China. Hail is common in summer or at the turn of spring and summer, which is a normal weather phenomenon.

Hail is also called "hail", commonly known as hail and "bully", and in some areas it is called "Lengzi" (such as Xuzhou and Gansu), which is a weather phenomenon and is the most common in summer or at the turn of spring and summer. It is some ice particles as small as mung beans and soybeans and as big as chestnuts and eggs.

Precursors of hail:

Feel hot and cold: If the hail season is cool in the morning, with high humidity and strong solar radiation at noon, resulting in strong air convection, it is easy to develop into cumulonimbus clouds and form hail. Therefore, there is a saying that "the morning is chilly, and the head is broken in the afternoon" and "the dew is heavy in the morning and the hail is fierce in the afternoon".

Identify the wind direction: there is often strong wind before hail, but the wind direction changes sharply. There are some agricultural proverbs, such as "evil clouds see the wind grow, hail falls with the wind", "wind twists clouds, hail flakes" and so on. In addition, if the south wind continues to blow, the wind direction becomes northwest or north wind, and when the wind increases, hail often follows, so there is a saying that "no east wind blows, no rain blows, no south wind blows, no hail falls".

Cloud-watching state: There are many proverbs all over the country to explain the precursor of hail from the color of clouds, such as "If you are not afraid of dark clouds, you are afraid of red clouds, but most afraid of white worms growing in red Huang Yun" and "The tail of dark clouds, hail killed cattle and sheep", because the top of hail was black at first, then red in the middle, forming white, black and red clouds, and the edge of the clouds was yellow.

There are also sayings that the cloud shape is a precursor of hail, such as "the dark clouds rolled into a ball in the afternoon, and the wind, rain and hail came together", "the sky was yellow and sultry, and the clouds rolled over, and the Tianhe water roared to prevent hail", indicating that the air convection was extremely strong at that time, and the clouds developed rapidly, like smoke going straight up and down, and the clouds rolled up and down, which made it easy to hail.

Listen to the thunder: the thunder is dull. In succession, the masses called this kind of thunder "Remore". Therefore, there is a saying that there is nothing wrong with thunder, and it is boring to lay an egg. This is because the frequency of horizontal flash in hail clouds is higher than that of vertical flash, and the range is wide The thunder and echo from all parts of the lightning are mixed together and sound continuous.