今年第18号台风沙德尔的残涡已移入南海北部 1。中央气象台于8月30日17时对沙德尔停止编号 1。残涡中心位于北纬20.7度、东经110.4度的广东省雷州市东部近海海面 1，以每小时15～20公里的速度向偏南转偏东方向移动 1。气象部门预计该残涡在8月31日白天可能再次发展为热带低压，并进一步加强为热带风暴级 1。
受残涡与南海季风槽共同影响，海南岛西南半部地区出现大暴雨到特大暴雨 1。8月30日08时至31日08时，海南儋州、昌江等8个市县共53个乡镇降雨超过50毫米 1，其中儋州市洋浦经济开发区降雨量最大，达207.4毫米 1。预计8月31日至9月2日，海南岛四周沿海陆地伴有6至9级阵风 1。气象部门已发布防御预警，建议加强水利、交通等基础设施安全巡查 1。
The remnant circulation of Typhoon Shader, this year's 18th typhoon, has entered the northern South China Sea and is forecast to potentially redevelop into a tropical depression by August 31 and further strengthen to tropical storm intensity 1. The system's center was located at approximately 20.7°N, 110.4°E over waters east of Leizhou, Guangdong Province 1. Moving at a speed of 15 to 20 kilometers per hour in a generally south to east direction 1, the system continues to pose weather threats to the region.
Heavy rainfall has already impacted Hainan Island, with the effects stemming from the combined influence of the remnant circulation and the South China Sea monsoon trough 1. Between August 30 and 31, rainfall exceeded 50 millimeters across 53 towns in eight municipalities including Danzhou and Changjiang, with the maximum recorded at 207.4 millimeters in the Yangpu Economic Development Zone of Danzhou 1. The southwestern portions of Hainan Island experienced severe to exceptional rainfall 1. Coastal areas surrounding Hainan are expected to experience gusts of 6 to 9 levels from August 31 through September 2 1. The Central Meteorological Administration discontinued the official naming of Shader on August 30 at 5 p.m. 1, while meteorological authorities have issued defensive warnings recommending strengthened safety inspections of water management and transportation infrastructure 1.
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