Thunder struck the yard. Is there a sign?

It is common sense that it thunders in summer and snows in winter. However, the world is full of miracles. Although it thunders in winter and snows in summer, such a thing is little known, let alone seen, but it does happen. In China, people call the phenomenon of thunder in winter "winter thunder" and the phenomenon of snow in summer "six in the snow". In recent years, due to abnormal climate and other reasons, the phenomenon of "thunder for the winter" has appeared in some parts of China to varying degrees. Please look at the following example. On the evening of June 6, 2003, heavy snow fell in Beijing, Tianjin and Hebei, accompanied by rumbling thunder. This rare weather phenomenon appeared near the "beginning of winter" solar term, and people talked about it one after another, and even some rumors that were not conducive to social stability appeared. Coincidentally. June 65438+10/October 65438+6 o'clock in the morning of February 2002, several dull thunder mixed with showers broke the tranquility of dawn and woke people in Zhengzhou and Xinxiang along the Yellow River in the Central Plains from their sleep. Wenmou, a villager in Miaoli Village, Jinshui District, Zhengzhou City, who was busy in the hospital at that time, was struck by lightning and ruined his life. At about 6: 50, a big paulownia tree with a height of about 12 m and a diameter of more than 40 cm was smashed by a loud noise in a wheat field in Zhaocun, Zhao Gou Township, Zhongyuan District, Zhengzhou City. At the same time, in Wuzhi County, Jiaozuo City, hail mixed with thunderstorms also fell from the sky. It's really unusual to hear thunder, hail, beating people and smashing things for three days and nine days. For a time, there were rumors in the society. I have lived for more than 80 years and have never seen such strange weather, said an old man in fengqiu county. Why does it thunder or even hail in winter? We know that all kinds of abnormal phenomena are not without reasons, and there must be special reasons, and the abnormal weather like "Lei Dong" is no exception. Lightning is a discharge phenomenon in thunderstorm clouds in the atmosphere, and its formation must meet three conditions, that is, there must be enough water vapor in the air, there must be power to make warm and humid air rise, and the air must be able to generate strong convection up and down. In spring and summer, due to the influence of warm and humid air flow in the south, the air is humid and the solar radiation is strong, so the air near the ground is constantly heated and rising, while the upper cold air sinks, which is easy to form strong convection, thus often producing thunderstorm clouds, which is prone to thunderstorm weather and even hail. Winter is controlled by continental cold air mass, the air is cold and dry, and the solar radiation is weak, so it is difficult for the air to form strong convection, so it is difficult to form thunderstorm clouds, thunderstorms and hail. However, at a certain time in winter in some years, the warm and humid airflow is strong, the weather is warmer (the temperature in the incident is often above 0℃), there is strong cold air in the north, and the cold and warm air meet, and the light warm and humid airflow rises sharply, which leads to the instability of the atmospheric structure and the intensification of convection. At this time, it is possible to form a thunderstorm or thunderstorm weather phenomenon. When the warm and humid airflow is particularly strong and the air convection is particularly strong, hail may also form. Although the phenomenon of "thunder can't stop winter" is rare, it is not unique. There are many similar cases all over the world. The phenomenon of "thunder and winter" mostly occurs in the solar calendar 1 to March. At this time, it is in the transitional period between winter and summer, and the weather is hot and cold, so there are more opportunities for the phenomenon of "thunder and winter". Through long-term and careful observation of the phenomenon of "thunder in winter", China folk summed up the law of "thunder in winter and snow in winter", that is, thunder in winter means that the air humidity is high and it is easy to form rain and snow; There is also a folk saying that "when it thunders in winter, ten cowsheds are empty", which means that when it thunders in winter, the warm and humid airflow is very active and the cold air is also very strong. It's so cold and snowy that even cows may freeze to death. In ancient times, due to the limited ability of human beings to understand nature, the ancients believed that all abnormal natural phenomena, such as day and night, landslides, rivers drying up, winter thunder and Xia Xue, cold in the south and warm in the north, were related to human beings and were regarded as some kind of sign. Song Zhenzong used people's psychology to deceive themselves and others, and forged the so-called "gobbledygook" of 14. Whenever the "heavenly book" comes, hundreds of officials compete for beauty. Only Sun Mou, the servant of Longtuge, said to Zhenzong, "I have heard a saying,' What is Heaven!'" "God can't even speak, how can there be a book? He also hit the nail on the head to expose the ugliness of ministers: "Now seeing a wild eagle or a mountain deer is regarded as auspicious news, and even things like thunder in winter should be regarded as auspicious congratulations. There are many people who make fun of it." In today's highly developed science and technology, although people's understanding of various natural phenomena is much more objective than in the past, it is undeniable that the changes of the four seasons are still full of mystery in people's eyes. Therefore, we must learn to observe and understand the abnormal phenomenon of "thunder and winter" with scientific "eyes" and understand that this is a special natural phenomenon that appears under certain conditions, which will be strange and strange; Once it appears, you won't panic and think it is an ominous sign.