Do you think the tornado in Kaiyuan, Liaoning Province has anything to do with the terrain?

The history of tornado weather in Kaiyuan area of Tieling is rare, which may be related to topography. Kaiyuan city is high in the east and low in the west, with hilly areas in the north and south and mountainous areas in the southeast, while tornadoes generally occur in plain areas.

In China, the occurrence of tornadoes has certain regional and seasonal characteristics, with more in late spring and early summer, generally occurring in the plains of the middle and lower reaches of the Yangtze River, more in the plains than in the mountains and more in South China. Tornadoes are rarely seen in big cities because of the underlying surface.

Under the extremely unstable thunderstorm weather, the atmosphere has strong convection movement. The strong updraft interacts with the shear wind in all directions, which makes the middle of the airflow start to rotate and expand up and down, forming a columnar air vortex. Its rotating diameter gradually becomes smaller, its speed becomes faster and faster, and its air vortex becomes more and more violent. When the vortex slowly spreads down to the ground, it forms a strong negative pressure on the ground, which is a tornado with great destructive power.

Regarding the early warning and forecast of tornadoes, experts said that the main clue of the current forecast is the moderate cyclone with medium or above intensity. At the same time, we should pay close attention to the background conditions of tornadoes, such as unstable weather background and vertical wind shear.