Tongzhou, Beijing suffered a suspected "tornado". How did it come into being?

The rainstorm in Beijing is a typical disastrous weather phenomenon in summer at about 40 degrees north latitude-strong convective weather caused by the southward movement of cold front. Simply put, the cold summit will move south quickly, and the warmer air will be driven away by the north high and the east low, so there will be a low pressure at the intersection of fronts. Under this mechanism, the warm air in the south will be further dragged in. Warm air condenses into precipitation after cooling. Because there is an intersection angle at the intersection of fronts, which is not completely vertical, in a certain area, air at different heights may move rapidly in different directions, and in some cases, it will form a vortex, which is easy to cause tornadoes. The common tornadoes in summer in the United States are caused by a cold front moving southward. However, there are not so many tornadoes in China because the terrain is much more complicated than the Central American Plains, but it is still possible. Because of the lack of further meteorological data (such as high-resolution radar, on-site weather station, etc.). ), it is difficult to determine whether it is a tornado or a downburst (another strong convective weather). The harm of downburst is also great, but unlike tornado, it is not a vortex, but a very strong wind. That's not true. Ask professionals to correct me ~

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