Why didn't it thunder in the second half of the year?

In the second half of the year, due to factors such as airflow and low temperature, there was no thunder. According to the relevant public information, lightning is a positive and negative discharge phenomenon caused by the violent collision of convective clouds. In winter, it is mainly controlled by the northwest airflow, and the temperature is low, so there are few opportunities for the formation of convective clouds. In summer, when the temperature is high, the updraft on the ground and the cold airflow at high altitude form convective clouds, which are easy to produce electron clouds in violent collisions. When it reaches the discharge distance, it will produce discharge and form lightning, so there are many lightning.