The average annual is 4.8, why is there a lot of tornadoes in Jiangsu?

The intersection news "The sky is dark, the wind outside the window is bombarded, it is really scary!" On July 20, many netizens posted a strong convective weather map on social media. The Jiangsu Meteorological Observatory announced that the radar echo of Suqian Puyang and Lianyungang Guannan region appeared typical characteristics of tornado. The reporter learned that from 1991 to 2020 meteorological statistics, the number of tornado occurred in Jiangsu, Guangdong, Hubei, Anhui and other provinces. Among them, Jiangsu and Guangdong are the most, with averaging 4.8 and 4.3 annual tornado.

Why is there a lot of tornadoes in Jiangsu?

According to the information of China Weather Network, my country's spring and summer are the season of tornado. The number of tornadoes from April to August accounted for 92%of the year, of which in July accounted for the highest proportion, about 30%. my country has an average of 38 tornadies a year. There were relatively many tornado in the mid -1990s to the beginning of this century; in the early 1990s and from 2006 to 2020, there were relatively few tornado.

From a nationwide perspective, there are many tornadies in Jiangsu, Guangdong, Hubei, Anhui and other provinces. Among them, Jiangsu topped the average of 4.8 average annual. Why is Jiangsu a tornado area? Liu Anning, chief forecaster of Jiangsu Meteorological Observatory, explained that tornado occurred mainly in the eastern plain and the middle and lower reaches of the Yangtze River. Jiangsu is the plain, the water network is densely set, and the north -south climate is transferred. In Jiangsu, one of the tornado is the coast and the other is the Gaoyou Lake area.

Meteorological data show that there will still be strong precipitation in the Jiangsu area from the night of the 20th to the 21st. On the 23rd, high temperature weather will usher in the Jiangsu southern Jiangsu region.

What time is the most prone to strong tornado during the day?

Although the tornado, as a short -term strong convection weather, has a small influence and short duration is not easy to monitor, experts from Nanjing University of Information Engineering have studied the rules of the tornado of Jiangsu over the past 50 years.

The results showed that starting in April each year, the number of tornado occurred in Jiangsu gradually increased, and 70%of strong tornado occurred between 12:00 and 20:00. After daytime solar radiation, the atmosphere structure is unstable during this period, and the weather is most likely to occur.

"In addition to the time period, we have also studied the frequency of tornadoes in various places. Statistics show that Yancheng belongs to cities with medium frequency. The low -lying and flat terrain in northern Jiangsu region is intertwined with rivers and lakes. Easy accumulation of unstable energy will help the formation of tornado. "Relevant experts told reporters.

How to do it to ensure safety when encountering tornado?

The tornado lasted for about 1 minute, and it lasted for a maximum of more than 10 minutes, but the loss of personal property caused by it could not be ignored. So, when the tornado strikes, how to prevent and ensure your life safety?

In this regard, the relevant person in charge of the Nanjing People's Air Defense Office said that the tornado has the characteristics of jumping forward, and it is often on the ground for a while. After the tornado, a narrow destruction belt will be left. Even the objects next to the destroy belt are safe and sound even at hand, so when encountering the tornado, keep calm and actively find a way to avoid. The basement of the concrete building is the safest place.

It is very dangerous if you happen to meet the tornado in the wild in the wild. Because the tornado can not only "swallow" the cars and people along the way, but also cause a large air pressure difference inside and outside the car to cause explosion. Therefore, at this time, the people on the car should quickly abandon the car to the nearby cover. If you have no time to escape, you should also stop and quickly find a low -lying area (such as Tiangou) that is vertically in the direction of the tornado road. Because the tornado is always "straight and straight", as if a athlete with a 100 -meter sprint, it is very difficult to turn sharply.

"In addition to avoiding the tornado, you should also pay attention to cutting off the power in time under the emergency of the electric pole and the collapse of the house to prevent the electricity from hitting the human body or causing fire. The pole is to avoid being smashed, crushed, and electric shock. "The relevant person in charge said.

Xinhua Daily · Jiaojiao Reporter Li Shuang

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