台风“桦加沙”来袭：香港已有82人受伤、有轮船撞毁护栏 深圳直径1米大树被吹倒 专家：降雨将成主要威胁

Core Viewpoint - The super typhoon "Haikui" has significantly impacted the Guangdong-Hong Kong-Macao Greater Bay Area, particularly in Shenzhen and Hong Kong, causing severe wind and storm surge effects [1][2]. Group 1: Impact on Hong Kong - As of 3 PM on September 24, Hong Kong reported 700 tree collapse incidents and 82 injuries during the storm, along with 16 flooding reports [2][4]. - The Hong Kong Observatory issued a No. 10 hurricane signal, the highest level of tropical cyclone warning, at 2:40 AM, which was downgraded to No. 8 at 1:20 PM [4][7]. - The water level in Victoria Harbour rose 1.3 meters above normal tide levels by 5 AM on September 24 [4]. Group 2: Impact on Shenzhen - In Shenzhen, a tree with a diameter of approximately 1 meter was uprooted, causing damage to surrounding pavement and roads [2][6]. - The city implemented a "five stoppages" policy (stopping work, business, market, transport, and classes) which was lifted at 4 PM on September 24, allowing for the resumption of metro services [7]. Group 3: Comparison with Previous Typhoons - The impact of "Haikui" on Hong Kong was less severe than anticipated, with wind and storm surge effects weaker than those of the super typhoon "Mangkhut" in 2018 [3][8]. - The maximum wind speed of "Haikui" was recorded at 230 km/h, compared to "Mangkhut," which reached 250 km/h [8][10]. - Historical context shows that "Mangkhut" caused 394 injuries and significant damage in Hong Kong, while "Haikui" has not yet reached such levels of destruction [10][11].