Chinanews.com, Haikou, September 8 (Liu Shuang and Liu Yuanyue) This year's typhoon No. 13 "Kang Sen" and No. 14 typhoon "San Du" have occurred recently. The distance between the centers of the two typhoons is only about 1,200 kilometers, forming a double typhoon. effect.
What is the double typhoon effect?
Are "Conson" and "Sando" affected by it?
Chen Hong, chief forecaster of the Hainan Provincial Meteorological Observatory, said that currently, the dual typhoon effect of typhoon No. 13 "Conson" and typhoon No. 14 "Sundu" this year, also known as the Fujiwara effect, refers to the interaction of two typhoons that are close together. The outer cloud system influences each other, resulting in changes in the path and intensity of the typhoon. The two typhoons rotate counterclockwise around the axis of the central line, which affects the form, intensity development and path of the typhoon.
Chen Hong said that according to the analysis of the current situation, under the guidance of the zonal subtropical high, the overall movement path of "Consen" and "Sandu" is northwest.
At the same time, due to the double typhoon effect, there is uncertainty about the specific movement paths of the two typhoons.
The water vapor and power conditions of "Sandu" are relatively good, and in the future it will be in a dominant position of twin typhoons.
However, the strength of "Conson" may weaken in the later period, and its moving path may be adjusted slightly to the south, or it may become stagnant or maneuvering near the Paracel Islands on 11-12.
Chen Hong said that the interaction of the two typhoons is only one aspect of the typhoon movement.
Changes in the path of typhoons are also affected by subtropical high pressure and monsoon troughs.
The Meteorological Department of Hainan Province will continue to pay attention to typhoon trends and adjust the forecast results in time.
According to the Hainan Meteorological Department on the 8th, "Conson" (severe tropical storm level) will pass through Luzon Island in the Philippines and enter the eastern sea surface of the South China Sea during the day on the 9th. The intensity will gradually increase, and then it will approach the eastern coast of Hainan Island.
The Hainan Provincial Meteorological Observatory predicts that under the influence of "Conson", it is expected that there will be strong wind and rain in the central and northern waters of the South China Sea and Hainan Island from the 9th to the 13th.
It is expected that from the night of the 10th to the 11th, there will be heavy rain and local heavy rain in the eastern half of Hainan Island; light to moderate rain and heavy local rain in the western half.
From the 12th to the 13th, there were heavy rains to heavy rains, local heavy rains to extreme heavy rains in the eastern, central and southern areas of Hainan Island; moderate to heavy rains and local heavy rains occurred in the western and northern areas.
In addition, coastal land will be accompanied by strong winds of magnitude 8 to 10, and winds of magnitude 6 to 8 on the rest of the land.
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