Thunder is common in summer, because the ground temperature is high, and convective clouds are more likely to form when warm and humid air rises, which creates conditions for lightning. In areas with relatively large undulations, thunder and rain are more common. This is because the warm air is blocked by mountains during the horizontal movement to form convection.

In winter, the ground temperature is low, and there is no hot air pushing up under the clouds. The clouds are relatively calm and will not accumulate a large amount of electric charge. Therefore, lightning and thunder will not occur, it’s normal that is snowing but not thundering in winter, and it’s abnormal to be thundering.

But abnormal does not mean that it will not happen. Take the "Thunder Snow" of the Xilinguole League. The day before the local area was relatively warm. The next day the northern cold air mass quickly moved southward. The density of the cold air is high. It will be forced to insert under the warm and humid air and move forward quickly. It forces the warm air to rise, forming convective clouds in the high sky—even the thunderclouds in summer.

There was lightning and thunder in the clouds, and the falling ice crystals would not melt into water droplets, because the ground underneath was cold air, so we saw the spectacle of thunder and snow. Anhui Jinli, lightning protection experts, provide users with fast and high-quality services and create a safe and worry-free electricity environment.