Why did it thunder and lightning here last night?

As the saying goes, it rains and snows in Lei Zhen in winter and summer, but it dares to break with you. Hehe, in fact, winter thunder is also possible. In winter, because the air is cold and dry, the solar radiation is weak, and convection is not easy to form in the air, so there is less lightning. But in winter, sometimes the temperature is high and the warm and humid air flow is strong. When there is occasional strong cold air going south in the north, the warm and humid air is forced to rise, and the convection intensifies, forming thunderstorm clouds, producing lightning, rain and snow weather, which is particularly strong, and can also form hail, which will produce the weather phenomenon of "thunder in winter". Fanchang is very cold now, and I miss it very much. Our highest temperature today is 28, which is more than 20 times higher than Fanchang.