Will it snow and thunder in winter?
In winter, controlled by the continental cold air mass, the air is cold and dry, the solar radiation is weak, and the air is not easy to form violent convection, so thunderstorms rarely occur. But sometimes the weather is warmer in winter, and the power of warm and humid air is stronger. When the cold air in the north occasionally goes south, the warm and humid air is forced to rise, and the convection intensifies, so-called "thunder into winter" phenomenon will occur. Meteorologists also say that the occurrence of thunderstorms does not depend on the temperature itself, but on the upper and lower distribution of temperature. In other words, although the temperature is not high in winter, if the temperature difference between the upper and lower reaches a certain value, strong convection can also be formed, resulting in thunderstorms. Thunder in winter is rare in China, but "thunderstorm" often occurs in Toronto in winter, so "thunderstorm in winter" is only a weather phenomenon, which has nothing to do with omen.
There is also a folk proverb "it thunders and snows in winter", which means that thunder in winter means that the air humidity is high and it is easy to form rain and snow; And "when it thunders in winter, ten cowsheds are nine empty", that is to say, when it thunders in winter, warm and humid air is very active, cold air is also very strong, and the weather is cold, even cows may freeze to death.