It snowed and thundered in Shijingshan, Beijing, at 0:07 on November 10, 2009

Thunder may also occur when it snows in winter. But the probability of occurrence is very small.

Thunder and lightning generally appear in strong convective weather. For example: convective rain that often occurs in tropical rainforest climate zones and in summer afternoons in my country, and typhoon rain that often occurs on the east coast of low-latitude continents, are often accompanied by thunder and lightning.

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

There are few chances of strong convective weather in winter, but sometimes strong cold air moving south can also cause warm and humid air near the ground to rise rapidly in some areas. Snowstorms often occur at this time, and it is normal to be accompanied by thunder and lightning.

On the evening of November 6, the temperature in North China was relatively cold due to the influence of cold air, and conditions were ready for snow. When the warm and moist air blowing from the south merges with the cold air from the north, the warm and moist air rises violently along the low-level cold air, forming strong convection and forming cumulonimbus clouds that cause thunderstorms. The ice crystals in the clouds are charged , ice crystals discharge, so there is a phenomenon of snowing and thundering at the same time.