Recently, Huludao, Liaoning Province was hit by a strong wind from Longquan. How destructive is a tornado?

Tornadoes are very destructive. They will blow down trees, houses, street lamps and so on, and sometimes cause casualties.

The formation principle of tornado The weather phenomenon of tornado is caused by many factors, including airflow and wind shear. First of all, the atmosphere will produce unstable energy under the influence of convection system, and then produce updraft. Then, the updraft will start to rotate horizontally under the combined influence of wind speed and wind shear. What is the basis of this phenomenon? Vertical vorticity.

After that, the converging airflow will make the rotating system gradually enter the convection system, and the core of the tornado will be produced in the troposphere. Finally, under the influence of downward flow, the vortex in the core will extend downward, resulting in a significant drop in ground pressure. Corresponding to the rapidly falling air pressure is the rapidly rising wind speed on the ground. At this point, a tornado formed.

Huludao Tornado On the afternoon of the 25th of this month, a tornado suddenly swept through Longgang District, Huludao City, Liaoning Province, and many communities in this area were attacked by this tornado. According to the statistics afterwards, more than 50 houses were damaged by the sudden tornado, and many of them had their windows blown away directly. In addition, many trees in Longgang District were uprooted by the tornado. In terms of casualties, one person was injured in the tornado.

Regional distribution of tornadoes According to relevant statistics, tornadoes are a global weather phenomenon. At present, tornadoes have occurred on all continents except Antarctica. The country with the highest frequency of tornadoes is the United States in North America, followed by Canada, which is also located in North America. As far as Asia is concerned, China, Japan and India are all high-incidence areas of tornadoes. There are more than 70 tornadoes in China every year, mainly in spring and summer, with July and August as the frequent periods.

Tornadoes in China mainly occur in central and eastern plains, such as Jiangsu, Anhui, Hubei and other provinces. Tornadoes, like typhoons, are big and small. But in terms of time, the duration of tornadoes is generally short, usually from a few minutes to more than ten minutes. Tornadoes are very destructive, and big tornadoes have the momentum to blow everything away. Therefore, when encountering a tornado, we must avoid dangerous houses, trees, street lamps, billboards and other places to prevent being smashed. In addition, don't stay in the car to avoid being blown away by the car. When avoiding a tornado outdoors, you should pay attention to escape along the vertical direction of the tornado.