running man

A |     AI摘要      福州启动防汛Ⅳ级响应，发布暴雨预警。    

    A rescue boat is seen moves through a flooded area in Longzhou, South China's Guangxi Zhuang Autonomous Region, on August 24, 2026, after heavy rainfall brought by Typhoon Narra and upstream inflows caused water levels along the Zuojiang River to rise. Photo: VCGTyphoon Narra, the 19th typhoon of the year, made landfall along the coast of Changjiang county in South China's Hainan Province at around 6:40 pm on Tuesday, after bringing heavy rainfall and flooding to southern regions, triggering evacuation of 50,000 people across Guangxi Zhuang Autonomous Region.
Guangxi faced its most severe flooding in decades, with 14 rivers at 20 hydrological stations surpassing warning levels by 0.37 to 7.69 meters. The Mingjiang River recorded its highest flood peak since records began in 1953, surging 6.69 meters above the warning level, while the Zuojiang River saw its highest levels since 1986, the Xinhua News Agency reported on Tuesday. 
According to a report from China News Service, the flood which hit the Zuojiang River brought the peak water level to 123.54 meters, 7.34 meters above the warning level. 
A total of 15,535 people in Longzhou county have been evacuated and relocated, while rescue teams are carrying out relief operations for affected residents, China News reported on Tuesday.
Longzhou county lies along the China-Vietnam border, where the Ping'er River, an upstream tributary of the Zuojiang River, flows across the border. Flood conditions in Longzhou therefore depend not only on local rainfall but also on water flowing in from Vietnam. The Chinese side remains in daily contact with the Vietnamese side to keep track of inflows along the Ping'er River, China News Service reported.
An earlier report from Xinhua said that, as of Sunday, the typhoon had affected 61,000 people across Guangxi, with 54,000 people relocated due to the disaster and 8,087 placed in emergency shelters. 
Since forming on August 21, Typhoon Narra has barely moved, lingering over the Beibu Gulf. As of 1 pm Tuesday, its center was located over the Beibu Gulf about 55 kilometers west-northwest of Dongfang city in South China's Hainan Province, maintaining tropical storm intensity, China Central Television (CCTV) News reported on Tuesday. 
The Guangxi water resources authority on Tuesday upgraded its flood-control emergency response for Guigang, while maintaining higher-level responses in several other cities, including Chongzuo, Fangchenggang and Nanning, CCTV reported. 
China's National Meteorological Center (NMC) said Typhoon Narra would make landfall or brush past Hainan, making landfall in Guangdong and Guangxi coastal areas on Tuesday night or Wednesday morning. It was packing winds of up to 20 meters per second near its center, with gale-force winds extending 100 to 150 kilometers outward — roughly comparable to the distance between New York City and Philadelphia. Narra is expected to weaken rapidly after making landfall.  
Global Times 
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B | 受台风“简拉维”等影响，24至25日有暴雨到大暴雨。“沙德尔”25日后或影响福建。

C | 气象部门解析台风效应，提醒防范强降水及次生灾害。         近期台风十分活跃，那么，台风将如何影响福州？未来，福州天气会如何变化？围绕市民关心的问题，记者采访了福州气象部门。    福州市气象台8月23日16时升级发布“暴雨预警Ⅲ级”。

D | 福州市防指8月23日16时启动防汛Ⅳ级应急响应。

E |          23日福州局地暴雨。记者 池远 摄     海上四系统共存     眼下，第18号台风“沙德尔”、第19号台风“紫檀”、第20号台风“简拉维”，叠加台湾以东洋面热带低压，海上四系统共存，环流互相牵制。    记者从气象部门了解到，台风“沙德尔”路径存在较大不确定性：一种可能西行趋向台湾、福建及华东沿海，一种可能后期北上转向。它预计8月25日下午进入福建台风警戒区；8月25日下午至29日，有可能先后对福建外海渔场、沿海乃至陆上造成风雨影响。

F | 8月25日之前，“沙德尔”距离遥远，对福州无直接风雨影响。

G |     台风“紫檀”中心活动于北部湾海面，主要影响广西、广东西部、海南沿海，距离福建遥远，市民不需要为该台风担忧。    台风“简拉维”预计8月24日在台湾海峡近海减弱消散，不会直接登陆福州。但是它和季风槽相互耦合，是当前福州强降雨的重要助推系统。台风外围环流源源不断输送水汽，叠加福建地形抬升，放大短时强降雨效率。8月24日之后，“简拉维”消散，对福州直接风雨影响基本结束。

H |     此外，台湾以东洋面热带低压短期发展为编号台风概率有限。

I | 它与季风槽、“简拉维”环流互相叠加，进一步打通东南方向水汽通道，间接抬升福州局地暴雨发生概率，增大短时强降水风险。    根据福州气象部门预报，8月24日至25日，全市阴有大雨到暴雨，部分大暴雨。26日降雨将有所减弱。    认识台风的“三大效应”     眼下是台风活跃季，台风的有关效应值得认识。

J |     列车效应。对流系统反复生成发展，使很多降水云团先后经过同一个地方，就像列车的不同车厢先后经过同一铁轨一样，导致强降雨长时间不下线。2023年，受台风“杜苏芮”环流影响，福州降水明显，出现列车效应。    藤原效应。双台风或多台风的活动盛期在7月至9月，三台风共存的现象平均每年会出现1.5次。双台风可能会引发双台风效应（藤原效应），即它们会围绕共同的中心旋转，互相影响路径和强度，尤其是两者距离在1000公里左右时效果更明显。    空调外机效应。台风中心属于低气压，周围的气压较高，气流会向台风中心压缩，使得台风中心存在上升气流。由于台风外围辐散的高空气流下沉在地面辐散，使得地表出现炎热现象，即空调外机效应。    此外，转向、掉头、转圈乃至直角，是台风路径中的常见变化。比如，在2023年，台风“卡努”路径呈现“之”字形；“苏拉”沿着广东海岸线一路前行，堪称“描边大师”。（记者 林舒颖 郑瑞洋）。

K |