Do you think the tornado in Kaiyuan, Liaoning is related to the topography?

Such tornado weather in the Kaiyuan area of ​​Tieling is rare in history, which may be related to the terrain. The terrain of Kaiyuan City is high in the east and low in the west, with hilly areas in the north and south and mountains in the southeast. Tornadoes generally occur in plain areas.

In my country, the occurrence of tornadoes has certain regional and seasonal characteristics. They are more common in late spring and summer. They generally occur in the plain areas of the middle and lower reaches of the Yangtze River. There are more plains than mountainous areas, and more in South China. Due to the underlying surface, tornadoes are rarely seen in large cities.

In extremely unstable thunderstorm weather, strong convective motion occurs in the atmosphere. The strong updraft interacts with shear winds from all directions, causing the middle part of the airflow to begin to rotate and expand up and down, forming a columnar air vortex. The diameter of its rotation gradually becomes smaller, the speed becomes faster and faster, and the air vortex becomes more and more violent. When the vortex slowly expands downward to the ground, a strong negative pressure is generated on the ground, which is a very destructive tornado

As for the early warning and forecast of tornadoes, experts said that the main clues of the current forecast are It is a medium cyclone of moderate or above intensity. At the same time, we must pay close attention to the background conditions for tornadoes, such as unstable weather background, vertical wind shear, etc.