What happened after the thunder in beginning of winter?

Once the weather gets warmer in winter, a strong warm and humid airflow forms on the ground. When the cold air in the north goes south, the convection will naturally intensify. With such meteorological conditions, the phenomenon of "thunder in winter" naturally appears.

Although the phenomenon of "thunder in winter" is rare, it is not unique. If the weather is cold and hot, there will be more opportunities for the phenomenon of "thunder in winter" Under the influence of strong warm and humid airflow and strong cold air, the warm and humid air in the lower layer was forced to rise, resulting in strong convection, which created conditions for the formation of lightning. After the "beginning of winter", "thunder entered the winter" appeared.

Beginning of Winter

Beginning of winter is the 19th of the 24 solar terms and the beginning of winter. Bucket handle points to the northwest, and the longitude of the sun reaches 225, which intersects with Gregorian calendar165438+1October 7-8 every year. Stand still, build the beginning; In winter, everything will be collected in the end. Beginning of winter means that anger begins to close and everything enters a state of recuperation. Its climate has also changed from dry autumn to rainy and cold winter.

The commonly used methods of season division mainly include "solar terms method" and "temperature method". China traditionally takes the "beginning of winter" with "twenty-four solar terms" as the beginning of winter; The winter divided by the "solar terms law" means that everything enters a state of recuperation. According to the "temperature method", winter begins when the average temperature of the day falls steadily below 10℃ for five consecutive days. Winter divided by temperature means cold weather.

Refer to the above content: Baidu Encyclopedia-beginning of winter