The Hong Kong Observatory has issued its second black rainstorm warning signal this week, indicating rainfall exceeding 70 mm per hour across the region. Triggered by a strong low-pressure trough, the downpour has been especially intense on Lamma Island, where hourly precipitation surpassed 100 mm.
In response, the Hong Kong Special Administrative Region (HKSAR) government activated its Emergency Coordination Centre and opened temporary shelters. Public services, including outpatient clinics and schools, have been suspended, and residents are advised to avoid country parks.
This latest alert follows a similar warning issued on July 29, marking a period of severe weather across East Asia. In Beijing, torrential rains have claimed at least 30 lives, mostly in the mountainous districts of Miyun and Yanqing. Over 80,000 people have been relocated, with rainfall in Miyun reaching 543.4 mm. The storms have damaged roads, disrupted power in over 130 villages, and highlighted the growing impact of extreme convective weather driven by subtropical moisture.