Typhoon Bailu crossed Guangdong after landing. The influence of wind and rain exceeded the landing point.

 Typhoon Bailu crossed Guangdong after landing. The influence of wind and rain exceeded the landing point.

Typhoon Bailu, the 11th typhoon of this year, landed in Dongshan, Fujian, this morning. Influenced by the precipitation of the typhoon itself and its later circulation, there will be heavy rains in Guangdong, Guangxi, Guangdong, Hunan, Hubei and other places today (25) and tomorrow. Guangdong will have a very heavy rainstorm. As typhoons carry wind and rain deep inland, high temperatures in parts of the South will be alleviated. Why is it raining heavier in Guangdong than near the landing site? When will the typhoon end? Shi Yan, Meteorological Analyst of China Weather Network, gives you a detailed analysis.

Why is it raining less at the landing site than around it?

Typhoon No. 11 of this year, Bailu (Strong Tropical Storm Level), landed at the coastal area of Dongshan County, Fujian Province, around 7:25 a.m. today (August 25). The maximum wind force near the center was 10 (25 m/s) and the lowest atmospheric pressure at the center was 988 hPa. Then the intensity gradually weakened to tropical storm level. It moved into Guangdong at 10:00 a.m. and the maximum wind near the center dropped to level 8 (20 m/s). It will move northwest at a speed of about 25 km/h, and the intensity gradually weakened.

This morning, the enclosure of Xiangan East Road in Xiamen was blown over. (Tu/Hong Ronglin)

Affected by typhoon, heavy rain or rainstorm occurred in the eastern coast of Zhejiang, southeastern Fujian, Fuzhou and Ningde yesterday, local heavy rain occurred in Zhangzhou, Fujian (100-123 mm); gusts of 8-10 grade appeared in the eastern coast of Fujian, and coastal gusts of Fuzhou, Putian, Quanzhou and Xiamen, Fujian, amounted to 11-13 grade.

Under the influence of wind and rain, a total of 63 high-speed trains from Guangzhou South Station and Shenzhen North Station to Shanghai Hongqiao Station have been suspended since the night of 24. A total of 19 ordinary speed trains stop or change routes to Guangzhou East and Shantou Stations. Seventeen flights were cancelled and some flights were delayed at Chaoshan International Airport in Jieyang. The Laichang Island passenger ship from Shantou to Nanao County, the only island county in Guangdong Province, stopped sailing at 22:00 on the 24th, while the inland ferry stopped sailing for shelter.

Radar maps show strong rain in Guangdong.

According to the fact that White Deer landed in Fujian this morning, heavy rainfall generally occurred in the southern coastal area of Guangdong. Why is it raining more in Guangdong than in Fujian? More serious? According to Shi Yan, a meteorological analyst at China Weather Network, when Typhoon Bailu made its second landfall in Fujian Province, its structure was loose and asymmetric. The convection in the North was weaker than that in the south, and the main rain areas were concentrated in the south. Therefore, the rains along the southern coast of Guangdong are stronger than those at landing sites. It is expected that the strongest rainfall will still be concentrated in the northern part of Guangdong Province during the daytime, and there will be a heavy rainstorm locally.

It is expected that after typhoon Bailu landed, it will cross from East Guangdong to North Guangdong, and the heavy rainfall area will sweep over most of Guangdong, which will be a test for Guangdong, especially in the mountainous areas. Looking back on 2010 Typhoon Fanbia, which crossed the inland of Guangdong from the central part, brought heavy rain to most of Guangdong. Maoming and Yangjiang suffered heavy rain (829.7 mm rainfall in Magui process of Gaozhou). This resulted in serious flood disaster. The main cause of casualties and disappearances was floods caused by heavy rains. Disasters, debris flow geological disasters and other secondary disasters. The path of typhoon Bailu is similar to that of Fanbia. The cities and counties of northern Guangdong, Eastern Guangdong and the Pearl River Delta need to strengthen their precautions.

The Central Meteorological Observatory predicts that there will be heavy rainstorms in the southwestern part of the Yangtze River, southeastern Fujian, Eastern Guangxi and Guangdong, local heavy rainstorms and extraordinary heavy rainstorms in the northern part of Guangdong. In the cities, there will be heavy rains in Meizhou and Shaoguan, Guangdong. Tomorrow, precipitation will be mainly brought by residual circulation of typhoon combined with cold air. Rainfall area will move westward and northward. It is expected that there will be heavy rains in central Hubei, western Hunan and Northern Guangxi, as well as local rainstorms.

Next Monday, the typhoons impact will basically end, but the combination of cold air and warm and wet air will still bring heavy rainfall to some parts of China. It is expected that there will be heavy rainstorms in northern Anhui, Eastern Hubei, Northwestern Hunan and southwestern Guizhou.

Meteorological experts warned that during the rainstorm, the public should avoid going out as far as possible and avoid serious areas of water accumulation. If it is really unavoidable to walk in water accumulation, the road should be carefully observed, away from eddies and springs, to prevent falling into wells and pits (holes); away from electrical equipment, to avoid electricity leakage and shock. Keep away from dangerous old walls and buildings as far as possible. Keep away from billboards and poles to prevent damage. At the same time, attention should be paid to the prevention of secondary disasters such as mountain torrents and debris flows.

Typhoon and Rain Temporarily Repelled the Summer Heat in Guangdong, Fujian and Southern High Temperature

How to relieve the summer heat, the non-cold air and rain countless. Affected by typhoon rains, the high temperature in South China will ease in the next few days. Later next week, however, the heat will return.

Yesterday, affected by the downdraft outside typhoon Bailu, the temperature of Renhua in Guangdong reached 40 C at 15:00, which was after 3 August 2003 and reappeared 40 C after 16 years. By 10 p.m., most of the temperature in Guangdong was above 30 C, the hottest in Chaoshan area, and the temperature in Jiexi was as high as 34.1 C. Typhoon peripheral circulation is the downward motion area of airflow. Upward airflow tends to condensate clouds and cause rain in the area affected by it. The downward airflow, on the contrary, tends to lead to clear skies, reduce relative humidity of air and increase temperature. This is called eating subsidence. In this muggy weather background, the atmosphere is also very unstable. Today, as typhoons penetrate inland and bring rainwater, the high temperature weather in Guangdong, Fujian and other places will be significantly alleviated.

In the middle of next week, the heat in the South will be more than half of the summer, and the summer heat will begin to subside. The tiger in autumn will be temporarily repelled by cold air. In contrast, the summer heat in South China is escalating. After 27 days, with the rain weakening and the return of summer heat, there will be continuous high temperature periods in Fuzhou, Guangzhou and other places.

Source: Editor-in-Charge of China Weather Network: Dai Wenjia_NB12498