Traditional Culture Encyclopedia - Weather forecast - What is the typhoon level in Guangdong?
What is the typhoon level in Guangdong?
The center of Typhoon Saddle No.9 this year landed in Dianbai coastal area of Guangdong at around 0: 30 this morning/kloc-0. When the saddle landed, the maximum wind force near the center was 33 m/s, with the magnitude of 12, and the lowest pressure in the center was 975 hectopascals, with typhoon intensity. △ Radar chart before typhoon saddle landed in Guangdong. Xu Yinglong, chief forecaster of the Typhoon and Marine Meteorological Forecasting Center of the Central Meteorological Observatory, analyzed that the typhoon "saddle" has two characteristics. First of all, it moves fast. Due to strong subtropical high, strong southerly wind and strong turning current, the moving speed of saddle is maintained at 30 to 35 kilometers per hour, while the average moving speed of typhoon in South China Sea is only 15 kilometers per hour. Saddle is much higher than this level. The second is structural asymmetry, which is reflected in the influence of wind and rain. The strong wind brought by "saddle" is concentrated on the east side of its direction, and the precipitation is concentrated on the west and south sides. Wang, a meteorologist from China Weather Network, said that the heavy rainfall brought by typhoon Saddle will mainly appear in Leizhou Peninsula, northern Hainan Island and southern Guangxi. For example, the local rainfall in the northern part of Hainan Island may reach 250-300mm, and these areas need to pay more attention to prevent the impact of heavy rainfall. The coastal area of Guangdong is located in the middle of subtropical high and typhoon, and the pressure gradient is large. In addition, due to the influence of coastal wind, the wind is relatively strong. △ The picture shows the cloud image of Fengyun-4 satellite at 8: 55 today. It can be seen that the typhoon "saddle" structure is asymmetric and there are many cloud systems in the south. (Image from National Satellite Meteorological Center) Due to the influence of the peripheral circulation of "Saddle", the wind and rain in Guangdong and Hainan started yesterday. In response to the typhoon, yesterday, Shenzhen sounded a typhoon-level emergency response. The home port of Shenzhen Shekou cruise ship was suspended, and the passenger ro-ro ship in Qiongzhou Strait stopped operating. With the deepening of the "saddle", the scope of wind and rain will expand. Because the "saddle" moves faster, heavy rainfall will not stay in one place for too long, shortening the impact time of the typhoon. Today "Saddle" mainly affects South China, and will be transferred to South Yunnan tomorrow. The Central Meteorological Observatory predicts that there will be heavy rains in central and southern Guangdong, central and southern Guangxi, Hainan Island and southern Yunnan from 24th to 26th. Among them, there will be heavy rain, local heavy rain (250-300 mm) in southwestern Guangdong, southwestern Guangxi and northern coastal areas of Hainan Island. However, it should also be noted that the local short-term rain intensity will be stronger. Small and medium-sized rivers such as Fangcheng River and Qinjiang River in the Pearl River Basin may have excessive warning water levels. Relevant departments and the public also need to guard against secondary disasters such as urban and rural waterlogging.
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