On the afternoon of June 11, this year's No. 2 typhoon "Miaobai" formed on the southeastern sea surface of the South China Sea and gradually approached the south Coast of China. The Central Meteorological Observatory issued a typhoon blue warning at 18:00 on June 11, and the China Meteorological Administration launched a four-level emergency response to major meteorological disasters (typhoons) and made every effort to do a good job in monitoring and forecasting and service work. As the first typhoon to make landfall in China this year, what are the characteristics of "Miaobai"? What is the impact of wind and rain? What precautions should be done? On the 12th, the China Meteorological Network and Xinhua Net interviewed Dong Lin, chief forecaster of the Typhoon and Marine Meteorological Forecasting Center of the China Meteorological Administration.
Guest: Dong Lin, Chief Forecaster of Typhoon and Ocean Weather Forecasting Center
Interviewer: Liu Jia, reporter of China Meteorological News, Hao Duo, reporter of Xinhua Net
Dong Lin (right) was interviewed by reporters. Zhao Tianyu Photography
Reporter: What is the formation and future development of Typhoon Miaobai No. 2 this year?
Dong Lin: The tropical depression in the South China Sea was formed at 14:00 on June 10 in the southeast of the South China Sea, and strengthened at 14:00 on the 11th into the no. 2 typhoon "Miaobai" (English name: MERBOK; name source: Malaysia; name meaning: a bird), which is also the first typhoon affecting China this year, located on the northern sea surface of the South China Sea 190 kilometers south of Shenzhen City, Guangdong Province, at 13:00 on the 12th.
The Central Meteorological Observatory predicts that "Miaobai" will move north-west at a speed of 20 kilometers per hour, with an estimated maximum intensity of tropical storm level or severe tropical storm level (magnitude 9-10, 23-25 m/s), and will make landfall in the coastal area from Zhuhai to Shantou from the evening of the 12th to the night, and the intensity will still be tropical storm level or severe tropical storm level (9-10 magnitude, 23-25 m/s) at the time of landing, and will gradually weaken and merge into the shear line in northern South China after landing.
Reporter: What are the characteristics of Typhoon "Miaobai"?
Dong Lin: Typhoon "Miaobai" has 4 characteristics. First, the path is stable, and it continues to move north-west since spawning. The second is that the movement speed is slightly faster, usually the movement speed of the typhoon is 10-15 km / h, and the "Miaobai" is close to the subtropical high pressure, guided by the basic air flow of the east wind belt on the south side of the subtropical high pressure, so the movement speed can reach more than 20 kilometers per hour. Third, the life history is relatively short, "Miaobai" is a typical South China Sea typhoon, generated in the southeast of the South China Sea, due to the close distance to China, coupled with the fast speed of movement, so from generation to landfall only two days. Fourth, the typhoon structure is asymmetrical, which is manifested by a narrow convection belt on the north side and a convective bandwidth on the south side, so the precipitation generated by the typhoon will not begin to appear until after the typhoon body lands. At the same time, the typhoon will weaken and dissipate rapidly on the 13th after landfall, but the residual circulation in the later period will be combined with the shear line in northern South China, and the two systems will work together to cause precipitation to last for a long time and will continue until the 16th.
Typhoon Miaobai No. 4 A Nebula No. 2 of this year (8:30 a.m. on June 12)
Reporter: What areas will the typhoon affect? What kind of wind and rain impact will it bring?
Dong Lin: The precipitation brought by the typhoon itself will mainly affect the central and eastern regions of Guangdong, and due to the combined impact of the shear line and the typhoon, several provinces in Jiangnan and South China will experience heavy to heavy rain. Specifically, on the 12th, under the joint influence of the shear line and "Miaobai", from 08:00 on the 12th to 08:00 on the 13th, there was heavy rain or heavy rain in parts of central and eastern Guangdong, southern Anhui, most of Zhejiang, northern Jiangxi, northern Hunan, eastern and southern Guizhou, eastern Yunnan and other places, of which there was heavy rain (100 to 180 mm) in the southeast of Guangdong; the above parts were accompanied by strong convective weather such as short-term strong precipitation, thunderstorms and strong winds or hail, and the maximum hourly rain intensity could reach 30 to 50 mm. Locally over 60 mm.
At the same time, from 08:00 on the 12th to 08:00 on the 13th, the winds in the central and northeastern parts of the South China Sea, the central and eastern coasts of Guangdong, and the southern coast of Fujian will gradually increase to 7-8, and the winds in the sea near the center of the typhoon can reach 9-10 and gusts of 11-12.
Reporter: What disaster prevention should be focused on in areas affected by typhoons and heavy rainfall?
Dong Lin: Before the typhoon came, the Central Meteorological Observatory issued the first blue warning of the typhoon of the year at 18:00 on June 11, and the China Meteorological Administration also launched a four-level emergency response to do a good job in meteorological support services. In addition, the Hainan Meteorological Bureau launched a typhoon four-level emergency response, and the Jiangxi, Anhui, Hunan and other provincial meteorological bureaus launched a four-level emergency response to heavy rain, and did a good job in monitoring and forecasting services.
The gusts brought by the typhoon are very strong, the maximum intensity can reach 11 to 12 levels, and the water operations and passing ships affected by the strong winds should return to the port to avoid the wind, strengthen the port facilities, and prevent the ships from anchoring, stranding and collision. At the same time, stop outdoor dangerous operations such as indoor and outdoor large gatherings and high altitudes; reinforce or dismantle structures that are easily blown by the wind. The public should not go out at will, and should stay in a safe place with wind as much as possible to ensure that the elderly and children stay in the safest place at home, and the personnel in dangerous houses are transferred in a timely manner. When the center of the typhoon passes through, the wind will decrease or stand still for a period of time, keeping in mind that strong winds will blow suddenly and should continue to stay in a safe place to avoid the wind.
Short-term heavy rainfall may cause urban waterlogging in some areas. In addition, continuous precipitation will also lead to increased risk of flash floods and geological disasters in Sichuan, Zhejiang, Jiangxi, Yunnan, Guizhou, Guangxi and other places, so it is necessary to strengthen the prevention of mountain flash floods and geological disasters, and mountain residents should be evacuated to safety in time.
Reporter: What has been the situation of typhoon generation since the beginning of this year?
Dong Lin: In terms of the number of typhoons generated, the number of typhoons generated this year is relatively small, as of now, only two typhoons have been generated. According to historical statistics, in the middle of June in previous years, the average number of typhoons generated could reach 3.3.
In terms of landing time, the time of the perennial landing in China's first platform is around June 27, and the landing time of Typhoon "Miaobai" is more than ten days earlier than usual.