Influenced by the residual cloud systems and monsoon outside Typhoon "Haikui", several cities and counties in the Pearl River Delta have been battered by torrential and locally severe rainstorms. The ongoing downpour is expected to continue affecting Guangdong Province, leading to a high risk of flash floods, hill torrents, geological disasters, and urban and rural flooding. Responding to the situation, the flood, drought and typhoon control headquarters of south China's Guangdong Province decided to upgrade the flood control emergency response from Level IV to Level II at 1:30 am on September 8th.

The control headquarters advised localities and relevant departments to evaluate disaster risks based on their responsibilities, task divisions, and pre-established plans, and swiftly enhance the level of emergency response.　They are required to undertake effective and orderly rainfall defense efforts to ensure the safety of people's lives and property as well as minimise disaster losses.

Guangzhou experiences strongest rainfall of the year 2023

From 08:00 on September 7th to 03:00 on September 8th, Guangzhou experienced its most powerful rainfall so far this year, reaching a level of extremely serious impact. The city's command headquarters for meteorological emergency decided to upgrade the region's Level III emergency response for heavy rain to Level II from 00:19 on September 8th. As of 7:45 am on September 8th, red warning signals of heavy rain were in effect in four districts of Guangzhou, including Haizhu, Tianhe, Panyu, and Nansha, which led to class suspensions; while six other districts, Yuexiu, Liwan, Huangpu, Baiyun, Huadu, and Zengcheng were under orange warning signals, which delayed school openings.

Shenzhen records its highest ever 3-hour rainfall

On September 8th, the emergency, meteorological, and education departments in Shenzhen warned that the city had experienced widespread, severe rainstorms from last night to this morning, and the red warning signals for rainstorms remained in effect, according to reports from Shenzhen. Schools across the city, encompassing kindergartens, high schools, and primary schools, suspended classes for the day. Shenzhen reservoirs began to discharge floodwaters at 00:15, with a flow rate of 70-80 cubic meters per second. People in Futian, Luohu, and Longgang districts are urged to stay away from river areas and closely keep an eye on information on flood discharge, taking safety precautions promptly.

Hong Kong issues black rainstorm warning signal overnight

In less than two hours s from 9:25 pm to 11:05 pm on September 7th, the Hong Kong Observatory changed the warning signal twice before issuing a black rainstorm warning. Various parts of Hong Kong suffered severe flooding, setting a record for the "one-hour rainfall" since records began in 1884. The Government of the Hong Kong Special Administrative Region, including the Drainage Services Department, Highways Department, Constitutional and Mainland Affair Department, and other departments, have taken full measures to respond. The Hong Kong Police and the Fire Services Department, among other disciplined services, have been deployed for rescue operations. Meanwhile, the emergency incident coordination center of the Constitutional and Mainland Affair Department has been activated, with 12 temporary shelters currently open.

暴雨袭击珠三角，广州深圳香港均现城市内涝

受台风“海葵”外围残留云系和季风影响，珠江三角洲多个市县已经出现大暴雨、局部特大暴雨，且研判认为降雨过程将持续影响广东省，发生中小河流洪水、山洪、地质灾害和城乡内涝风险极高。广东省防汛防旱防风总指挥部决定于9月8日1时30分将防汛Ⅳ级应急响应提升至Ⅱ级。

广东省防汛防旱防风总指挥部要求各地、各部门高度重视，按照职责分工和预案规定，结合本地实际认真研判灾害风险，及时提升应急响应等级，有力有序有效开展强降雨防御工作，全力以赴确保人民群众生命财产安全，最大程度减少灾害损失。

广州出现今年以来最强暴雨过程

7日8时至8日3时，广州出现今年以来最强暴雨过程，已达到特别严重影响等级。市气象灾害应急指挥部决定从8日0时19分起将广州市气象灾害（暴雨）Ⅲ级应急响应升级为Ⅱ级应急响应。截至9月8日7时45分，广州海珠、天河、番禺、南沙等4区暴雨红色预警信号生效，按指引应当停课；越秀、荔湾、黄埔、白云、花都、增城等6区暴雨橙色预警信号生效，按指引应当延迟上学。

深圳滑动3小时雨量破历史极值

9月8日，据深圳发布消息，应急、气象、教育部门提醒：昨晚至今晨深圳市普降特大暴雨，暴雨红色预警继续生效中，9月8日，全市中小学、幼儿园全日停课。深圳水库0时15分开始排洪，流量为70-80立方米/秒，请福田区、罗湖区、龙岗区组织相关人员远离河道区域，并密切关注排洪信息，及时采取安全防护措施。

香港深夜挂黑色暴雨警告信号

从7日晚9时25分至11时05分不到两个小时内，香港天文台连续两次更改直至发出黑色暴雨警告信号。香港全港多处遭受严重水浸，更录得自1884年有记录以来“一小时雨量”的最高纪录。特区政府包括渠务署、路政署、民政事务署等多部门全力采取应对措施，香港警方及消防处等纪律部队投入救援行动。同时，香港民政事务总署紧急事故协调中心启动运作，目前已开放12个临时庇护中心。

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