Why did the Typhoon "Xuan Lannuo start to speed up?What is the impact?Zhejiang Meteorological Expert Answer

Zhejiang News Client reporter Wang Keyu

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).

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.

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.

According to the Provincial 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. Today, there are 9-10 gusts on the coast of the south coast of Zhejiang. Today, from the 5th to the 5th to the 5th, the gusts of the coastal sea surface increased from south to the north to 10-12, of which 13-15 of the coastal seas of the northern Zhejiang. 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.

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