What are the signs of thunder in March?

Thundering in March is a normal climatic phenomenon, which means that the weather changes are following the season, so the weather is good, especially when it rains when the wheat seedlings are filling, so the wheat harvest is very good, so it is said that "thundering in March is a heap of wheat." .

Thundering in the first month means that it is abnormal to thunder in the first month, because the first month is still relatively cold, but thunder means that the weather has warmed up in advance, which is not in line with the normal solar terms and seasons. Climate change, and the warming and cooling of the climate follow each other closely. The weather that warms in advance means that the phenomenon of "late spring cold" may occur soon.

The late spring cold is very detrimental to agricultural production. Spring is the time when all things germinate. The sudden cold "late spring cold" will have an adverse impact on the growth of crops, resulting in reduced or even no harvests. People depend on food. If there is no harvest in the fields and there is no food source, they may starve to death and be buried in piles of earth.

This is the meaning of "Thunder in the first month of the year, and the earth is full of thieves". It is also because people have no food, so they have to steal. Therefore, there is also a saying of "Thunder in the first month of the year, thieves everywhere."

The formation of thunderous snow

1. After entering winter, the temperature in a certain area is warm and the warm and humid air is relatively strong. When the cold air moves southward, it meets the warm air mass, and the dramatic temperature difference will The warm and moist air flow rises rapidly, convection intensifies, and thunderstorm clouds are formed. At the same time, the air with higher humidity will cause rain and snow in winter, resulting in thunder and snow. When thunderstorms occur, the amount of snowfall is usually heavy, and can reach a heavy snowfall.

2. The occurrence of thunderstorms requires suitable atmospheric conditions. The upper layer is dry and cold, and the lower layer is warm and humid. This is the large-scale background for this phenomenon. Generally speaking, snowfall needs to meet three conditions: ① Sufficient water vapor. ② There must be a large number of ice crystal nuclei in the atmosphere to facilitate the adhesion of water vapor. ③The temperature near the ground is generally lower than 4℃.

3. Lightning is a discharge phenomenon that occurs within thunderclouds, between clouds, or between clouds and the ground. Thunder and snow may occur as long as the conditions for snowfall and thunder and lightning are met at the same time. This requires the atmosphere to have stratification instability conditions. There is a large temperature difference between the upper and lower layers, and the air will form convection.