Why did the Typhoon "Xuan Lannuo start to speed up?What is the impact?Meteorological expert answer

Zhejiang News Client reporter Wang Keyu Editor Ren Zhengbin

On September 3, the original typhoon "Xuan Lannuo" began to speed up! According to the Central Meteorological Observatory, at 12 o'clock on the 3rd, the "Xuanlan Nuo" center was about 760 kilometers from the south of the south of Zhujiajian Island, Zhejiang Province, and moved at a speed of about 15 kilometers per hour. The largest wind near the center is above 14 or more (45 meters/s).

Why did "Xuan Lan Nuo" speed up?

At 13 o'clock, the reporter learned from the Provincial Meteorological Station that at present, "Xuanlan Nuo" is moving north to west at a rate of 15 kilometers per hour, and gradually approach the coast of the northeast of our province. Sea area.

Why did "Xuan Lan Nuo" start to speed up? Xu Yan, the chief forecaster of the Provincial Meteorological Observatory, analyzed that after a day of adjustment, "Xuan Lannuo" has been separated from the control belt control of the subtropical convergence, and the subtropical high -voltage is broken into two rings. The influence of the ring height of the ring began to move north to west, and the speed was accelerated. It is expected that after moving into the East China Sea today, there will be a wave of speed up.

Will "Xuan Lannuo" log in?

According to expert analysis, judging from the current path of "Xuan Lannuo", it is less likely to land in my country. Zhang Ling, chief forecaster of the Central Meteorological Observatory, said that due to the consideration of the Western Wind Belt and a subtropical high -voltage, and some uncertain factors on the south side of it, there is also some uncertain factors on the bottom of the high pressure, which will lead to the typhoon The distance from the coastline of the center may be reduced to a certain extent. We currently consider this possibility of landing, but we think that it is still not the same as logging in, and this possibility of turning offshore will be greater.

According to Zhejiang Meteorological Observatory, the possibility of typhoon "Xuan Lannuo" is unlikely, and there is a high probability that it will turn north to the north around 123.5 degrees east longitude around the 5th. However, due to its huge volume, even if it is "passing by" from offshore, the impact on the storms of our province will not be absent.

"Xuan Lan Nuo" affects the geometry?

With the approaching of "Xuan Lannuo" to my country's coast, its impact on my country's storm is gradually prominent. Today, there are 9 to 10 gusts along the coast of the southern Zhejiang and South Zhejiang. From this night to the 5th, the coastal surface gusts are increased from south to the north to 10-12, of which the northern coastal seas of Zhejiang is 13-15. In addition, there are local heavy rains in the east to the east of the central Zhejiang region today. Among them, there are heavy rains in Ningbo, Zhoushan, and the eastern region of Shaoxing.

At present, the closest period of "Xuan Lannuo" and the nearest period of the coastal areas of East China will be from today to 5th, and the wind of Zhejiang coast will gradually increase. Meteorological experts remind that although Typhoon "Xuan Lannuo" is less likely to land in my country, the impact of wind and rain is still very strong. In the past, ships should return to the port to avoid wind and strengthen port facilities.

"Xuanlan Nuo" intensity may be strengthened again?

The intensity of "Xuan Lannuo" that enters the accelerated track will also be increased. Xu Yan said that because of the early high pressure of the subtropical, the sea temperature of the entire East China Sea was significantly higher than the year. Therefore, after reaching the East China Sea, the major environmental conditions are very conducive to the typhoon strengthening again. It is expected that from the night of the 4th to the morning of the 5th, "Xuan Lannuo" may be strengthened to a super typhoon again.

Zhang Ling, chief forecaster of the Central Meteorological Observatory, analyzed that after the development of yesterday, the wind -eye structure of Typhoon "Xuan Lannuo" was once again clear. It is expected that the future intensity will develop again. Belt and closer.

Zhang Ling, chief forecaster of the Central Meteorological Observatory: Yesterday, its intensity showed a state of attenuation, mainly due to the large vertical cutting, and some dry air was involved. level. Although the strength of Typhoon "Xuan Lannuo" has weakened, its entire framework structure is still very complete. As it gradually enters the East China Sea today, its structure will gradually appear in a tight state. Judging from the conditions of typhoon development, including the status of its sea temperature and the heat of the entire atmosphere, it is very conducive to the development of its intensity.

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