Why is it that when it rains in the summer, there is thunder, but when it snows in the winter, you c

Thunder and lightning are the phenomenon of electrical discharge in thunderstorm clouds. There are certain conditions for the formation of thunderstorm clouds, that is, there must be sufficient water vapor in the air, there must be a power to make the moist air rise, and the air must be able to produce violent convective movements. In spring and summer, due to the influence of the warm and humid airflow from the south, the air is humid, and at the same time, the solar radiation is strong, the air near the ground is constantly heated and rises, and the cold air in the upper layer sinks, which is easy to form strong convection, so there are many thunderstorms and even hail.

In winter, due to the control of the continental cold air mass, the air is cold and dry, and the solar radiation is weak, the air is not easy to form violent convection, so thundershowers rarely occur. However, sometimes the weather is warm in winter, and the warm and humid air is stronger, and when the strong cold air in the north occasionally goes south, the warm and humid air is forced to rise, and the convection intensifies, thundershowers will be formed, and the so-called "thunder winter" phenomenon appears. Meteorologists also say that the generation of thunderstorms does not depend on the temperature itself, but on the distribution of the temperature up and down.

In other words, although the temperature is not high in winter, if the temperature difference between the upper and lower reaches a certain value, strong convection can also be formed, resulting in thunderstorms. Winter thunderstorms are rare in China, but they are common in winter in Toronto, Canada.

When the air is extremely unstable, it is easy to have a strong upward convective movement, and form a towering cumulonimbus cloud, the cloud is full of water vapor rushing up and down, it will produce static electricity, the upper end of the cloud will produce a positive charge, the lower end of the cloud will produce a negative charge, and the ground is a positive charge, then, there is air as an insulator between the positive and negative charges, if the voltage difference between the positive and negative charges is large enough to break through the air of the insulator, so that the air expands in an instant**, heats up and glows, and the light is lightning, expanding** Making a loud noise is thunder.

The reason why there is no thunder in winter may be because of the difference in the living area. Thunder occurs in convective weather, when the warm air flow and the cold current in the sky meet, due to the different charges they carry, they combine with each other to produce thunder and lightning.

Thunder in winter, I often hear about it, in Harbin.

1. Snow and thunder are bad omen, and there will be disasters brought by nature, such as drought, always cloudy and rainy, and there will be natural disasters. Snow and thunder in the first month of the year, the ancients thought it was an unlucky omen. It is written in the ancient poem "The Evil One":

Winter thunder shakes summer rain and snow, heaven and earth are together, dare to be with you! Comparing thunder in winter to "snow in summer" is considered an impossible natural phenomenon.

2. Thunder in winter, commonly known as "winter thunder" or "thunder in winter". In winter, "thunder winter" is uncommon, but it exists. However, in ancient times, due to the underdevelopment of science and technology, people believed that thunder in winter was a bad omen.

Day and night are reversed, and the seasons are out of order, which is a bad omen in ancient times. Thunder strikes winter, nine out of ten bullpens are empty. In the eyes of the ancients, winter is the season when all things are hidden, and if there is thunder in winter, it is called "disturbing the sun".

In winter, the yang energy of heaven and earth is to be hidden. From a celestial point of view, there should be no thunder in winter. If there is thunder in winter, it means that the heavens and the earth cannot hide the yang energy, and the animals will definitely suffer.

3. The weather signs of snow and thunder are a few days before the incident, the local temperature is often above 0 degrees, the humidity is large, and on the day of the incident, there is strong cold air affecting the local area, when the strong cold air and the ground are relatively warm and humid. When the air is in contact, the lightweight warm and moist air is violently lifted, resulting in the formation of unstable stratification and the formation of thunderstorm clouds, and the temperature of the thunderstorm clouds formed by the uplift should be below 0 degrees, so the weather phenomenon of snow and thunder will occur.

Lightning is a phenomenon of electrical discharge, and it mainly comes in two forms:

1.When there are two types of electric charges in the cloud, the phenomenon of electrical discharge occurs in the cloud, which makes it easier to produce thunder, which often occurs in convective weather in summer.

2.When there is only a positive charge in the clouds and only a negative charge on the ground, there will be a tree root-like thunderbolt, which can occur all year round, and this kind of lightning can easily kill people.

In summer, due to the influence of the warm and humid airflow from the south, the air is humid, and the solar radiation is strong, the air near the ground is constantly heated and rises, and the cold air in the upper layer sinks, which is easy to form strong convection, coupled with the impact of the cold airflow from the north, the convection is more intense. The strong convection of the air will cause strong friction and produce a large amount of static electricity, and the water vapor stores these static electricity and brings it to the sky to form clouds, so that the clouds bring a lot of static electricity, and the static electricity carried by different clouds is different, and when they meet, the discharge phenomenon will occur, producing light and heat, and the air will be heated and expanded, and impact all around, so that we can see lightning and hear thunder.

In winter, due to the control of the continental cold air mass, the air is cold and dry, coupled with the weak solar radiation, the air is not easy to form violent convection, the air friction is less, the water vapor that stores static electricity is also less, and the static electricity carried by the clouds is also less, and the discharge voltage cannot be reached, and lightning and thunder cannot be formed naturally.

In winter, due to the control of the continental cold air mass, the air is dry and cold, the solar radiation is weak, and the air is not easy to form violent convection, so thunder rarely occurs.