What are the signs before the hail comes?

Judging whether hail is coming can be: feeling hot and cold, distinguishing wind direction, watching clouds, listening to thunder, knowing lightning and seeing things.

1, feeling hot and cold.

If the hail season is cool in the morning and humid, and the solar radiation is strong 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".

2. 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".

Step 3 look at the clouds

There are many proverbs all over the country that explain the precursor of hail from the color of clouds, such as "I'm not afraid of dark clouds, but I'm afraid that dark clouds are red, and red Huang Yun is most afraid of white worms", and "The tail of dark clouds kills sheep and cattle". Because of the color of hail, the top is black with white background at first, and then red in the middle, forming a cloud with black and red white background and yellow edges.

There are also sayings that clouds are precursors of hail, such as "In the afternoon, the dark clouds rolled into a ball, and the wind, rain and hail came together", "The sky was yellow and sultry, and the clouds turned 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 rushing up, and the clouds rolled up and down, making it easy to hail.

Step 4 listen to 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 echoes emitted by various parts of lightning are mixed together and sound continuous.

Step 5 learn about lightning

Generally speaking, lightning in hail clouds is mostly inter-cloud lightning, that is, "horizontal lightning", which shows that the process of hail formation in clouds is very intense. Therefore, there is a saying that "vertical lightning can come, and horizontal lightning can prevent hail disasters".

Step 6 look at things

There is a lot of experience in detecting hail from different places. For example, there are some proverbs in Guizhou, such as "geese fly low, hail comes quickly", "willow leaves fly, hail falls in the sky", and there are some proverbs in Shanxi, such as "cattle and sheep don't lie on the beam at noon, beware of hail in the afternoon" and "the grass grows white beads, and the hail falls steadily".

It should be noted that the above experience can not be judged only by a certain article, but should be comprehensively analyzed and applied.