Know the typhoon in one minute

Xinhua News Agency, Hangzhou, August 3 (Reporter Xu Shunda) Typhoon Sanda and Typhoon 6 of No. 6 this year have been generated. Meteorological analysis pointed out that in August, typhoons were brewing. How is the typhoon formed? What preparations do residents need to make before the typhoon comes? How to avoid danger when typhoons come? The reporter specially asked meteorological experts to conduct popular science.

Ruan Xiaojian, deputy director and senior engineer of Zhejiang Meteorological Popularization Center, introduced that the typhoon was formed on the tropical ocean. It has strict requirements on the water temperature of the sea, and the surface temperature of the sea must reach at least 26.5 ° C. The warm and wide foreign face contains huge energy, providing conditions for typhoon breeding. The warm sea water is under the sun, and the strong rainy clouds are formed over the sea. The continuous expansion of the accumulated rain cloud group was affected by the power of the ground, and rotated counterclockwise to form tropical cyclones.

On July 2 this year, the typhoon "Siaba" landed in the Dianbai coastal area of ​​Maoming City, Guangdong Province. The picture shows the fishing boat stopped near the Boga Bay Bridge near the Dianbai District of Maoming City. Xinhua News Agency reporter Huang Guobao Photo

Meteorological experts introduced that when the tropical cyclone develops and achieves a certain intensity, it is called typhoon in the Northwest Pacific, and it is called a hurricane near North America. Near East Asia's low latitudes, the typhoon is generally west or northwest after the typhoon is generated, and it may also turn to the northeast after a certain latitude. This depends on the game results of a variety of weather systems. The strong subtropical high pressure has the greatest impact on the typhoon path.

"Although Typhoon on the 5th and 6th this year has been generated, due to the inadequateness and the high pressure of the subtropical high pressure, the two typhoons have weakened and dissipated on the sea on the surface." Ruan Xiaocheng said. According to the situation of typhoons all year round, August will be the month when typhoons are generated the most in the year, with an average of 5.7 typhoons. From 1949 to 2019, a total of 130 typhoons landed in my country in August. In early August this year, the tropical disturbance of the South China Sea and the Northwest Pacific has become active, which may be generated by 1 to 2 typhoons.

The main disasters brought by typhoons include heavy rain, strong wind and storm tide. As a country with more typhoons, almost the summer of the coastal provinces will pay close attention to the typhoon movement, and all departments are waiting.

On October 13, 2021, citizens took the "round rules" landing on Typhoon "round rules" on the Central Coast of Poly in Haikou. Xinhua News Agency reporter Yang Guanyu

Meteorological experts suggest that before the typhoon comes, residents should listen, watch or check the typhoon forecasting early warning information in time; reserve food and water, prepare emergency items such as mobile power, flashlights; ; Residents living in all kinds of dangerous housing, factory buildings, and sheds must be transferred to a safe zone in time; residents in coastal areas are best to use tape to stick "rice" graphics on the window glass to prevent the window glass from crushing.

When the typhoon comes, you need to continue to pay attention to the dynamic information of typhoon and minimize your out. If you are outside, do not avoid wind and rain near temporary buildings, billboards, iron towers, big trees, etc. If you live in a tent, you should immediately put away the tent to avoid the wind in a strong and strong house; On the water (such as swimming), it should be immediately ashore to avoid wind and rain.

On October 13, 2021, on the eve of the typhoon "round rules" landed on the eve of the landing, it was shot in Haikou Bay, Haikou City. Photo by Xinhua News Agency reporter Pu Xiaoxu

In addition, Ruan Xiaojian said that the typhoon was not nothing. For my country's coastal areas, typhoon precipitation is an important source of water supplement in summer. "For typhoons, we cannot interfere with its formation and movement. What we can do is to actively respond to scientific scientific response, tend to avoid harm, and minimize the risk of disaster."

- END -