Why do you like thunder?

According to experts' analysis, lightning is a discharge phenomenon in thunderstorm clouds. Thunderstorm clouds generally have two conditions, sufficient water vapor and strong convection. In winter, because the air is cold and dry, the solar radiation is weak, and convection is not easy to form in the air, so lightning is rare. But in winter, sometimes the temperature is high and the warm and humid air flow is strong. When there is occasional strong cold air going south in the north, the warm and humid air is forced to rise, and the convection intensifies, forming thunderstorm clouds, producing lightning, rain and snow weather, which is particularly strong, and can also form hail, which will produce the weather phenomenon of "thunder in winter". Since the middle of 5438+ 10, the warm and humid air flow has been extremely strong, and the temperature is obviously high. On June 5438+04, the highest temperature reached 22. 1℃, the highest in the same period in history. On June 5438+07, the strong cold air in the north went south, and the two met, not only snowing, but also thundering. Knowing these reasons, it is not surprising that it thunders in winter.

Why does it thunder on snowy days?

It is reported that one night in the early spring of 1970, the north wind roared in the middle and lower reaches of the Yangtze River in China, and it was snowing with rare goose feathers. Suddenly, there was lightning and thunder in the sky, which is a rare weather phenomenon and makes people feel strange. So, why does it thunder on snowy days?

Lightning and thunder are common weather phenomena in summer, while it usually snows in winter. These are two completely different weather phenomena. However, as long as the weather in a certain place has the conditions of snow and thunder at the same time, these two completely different weather phenomena can appear at the same time.

In winter, the sky is overcast, the temperature of the upper clouds is below zero, and the water vapor in the clouds condenses into snow. When snowflakes fall from the clouds, they will melt into raindrops if the air temperature near the ground is high. On the contrary, if the temperature near the ground is low and the snow cannot melt, it will snow.

Thunderstorms are caused by strong convection of warm and humid air in some places. The sharp rise of warm air produces the violent vibration of cumulonimbus clouds, which will accumulate a lot of charges and produce lightning.

The weather at that time was that the ground temperature was around zero, which made it possible to snow. At high altitude, warm and humid air climbs sharply, producing strong convection and cumulonimbus clouds, so it snows and thunders at the same time.

Why does it seldom thunder when it snows in winter and it rains and thunders in summer?

Lightning is a discharge phenomenon in thunderstorm clouds. The formation of thunderstorm clouds should meet certain conditions, that is, there should be enough water vapor in the air, the power to make wet air rise, and the air should be able to produce strong convection. Spring and summer are affected by the warm and humid airflow in the south, with humid air and strong solar radiation. The air near the ground is constantly heated up, and the upper cold air sinks, which is easy to form strong convection, so there are many thunderstorms and even hail.

In winter, controlled by the continental cold air mass, the air is cold and dry, the solar radiation is weak, and the air is not easy to form violent convection, so thunderstorms rarely occur. But sometimes the weather is warmer in winter, and the force of warm and humid air flow is stronger. When the cold air in the north occasionally goes south, the warm and humid air is forced to rise, and the convection intensifies, so-called "thunder into winter" phenomenon will occur. Meteorologists also say that the occurrence of thunderstorms does not depend on the temperature itself, but on the upper and lower distribution of temperature. 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. Thundering in winter is rare in China, but it often happens in Toronto in winter.

When the air is extremely unstable, it is easy to have strong upward convection and form towering cumulonimbus clouds. Clouds are full of water vapor running up and down, which will generate static electricity. The upper end of the cloud will produce positive charge, the lower end of the cloud will produce negative charge, and the ground will be positively charged. Then, there is air as an insulator between the positive and negative charges. If the voltage difference between positive and negative charges is large enough to break through the air of the insulator, the air will instantly expand, explode, heat and glow.