June 2009165438+1October 10, it snowed and thundered in Shijingshan, Beijing at 0: 07.

It may thunder when it snows in winter. This is just a small opportunity.

Lightning usually occurs in strong convective weather. For example, in the tropical rain forest climate zone, the convective rain that often occurs in summer afternoons in China, and the typhoon rain that often occurs on the east coast of low latitude mainland are all accompanied by lightning.

Strong convective weather requires warm and humid air to rise rapidly. In summer, the temperature near the ground tends to rise rapidly, so there are often strong convective weather-thunderstorms.

There are few chances of strong convective weather in winter, but sometimes strong cold air goes south, which will also make the warm and humid air near the ground rise rapidly in some areas. At this time, snowstorms often occur, and it is normal to be accompanied by lightning.

165438+1On the evening of October 6, due to the influence of cold air, the temperature in North China was cold and it was going to snow. When the warm and humid airflow from the south meets the cold air from the north, the warm and humid airflow rises violently along the low-level cold air, forming strong convection, thus producing cumulonimbus clouds with thunderstorm phenomenon. The ice crystals in the clouds are charged and discharged, so there is snow and thunder.