Hong Kong Issues Black Rainstorm Warning as Torrential Downpour Disrupts City Services

Hong Kong Issues Black Rainstorm Warning as Torrential Downpour Disrupts City Services

Hong Kong has been brought to a standstill after issuing its highest-level "black" rainstorm warning on Tuesday, August 5, following an intense overnight downpour that triggered flooding and disrupted key public services. The Hong Kong Observatory first raised the black warning late Monday night and reissued it in the early hours of Tuesday morning as rainfall exceeded dangerous thresholds in various parts of the city.

The warning, which signals more than 70 millimeters of rain per hour, remained in effect through much of the morning, with the Observatory recording rainfall rates between 60 to 90 millimeters per hour in some districts. The city also experienced nearly 10,000 lightning strikes within a single hour, reflecting the severity of the storm system moving across southern China.

The black rainstorm signal, part of Hong Kong’s three-tier warning system, is rarely issued and compels the suspension of most non-essential services. All schools were ordered to cancel both morning and full-day sessions. Courts, tribunals, and land registration offices also remained shut, with authorities stating they would resume operations only after two hours of safe conditions following the cancellation of the warning.

Public hospital services were partially suspended, with general outpatient clinics and non-urgent day services such as geriatric and psychiatric units closed. Emergency departments, however, continued to operate. Hongkong Post also halted deliveries and branch operations across the city.

Despite the severe conditions, the Hong Kong Stock Exchange remained operational, following a policy shift last year to keep financial markets open regardless of weather warnings. Hong Kong Disneyland stayed open with limited services, though the storm affected visitor turnout.

Public safety agencies urged residents to stay indoors and avoid low-lying areas, steep slopes, and flood-prone zones. Violent wind gusts were reported, particularly in areas like Cheung Chau where wind speeds exceeded 90 kilometers per hour.

This latest weather emergency follows deadly flash floods in nearby Guangdong province over the weekend, where at least five people were killed and emergency crews were deployed to rescue stranded residents. The storm system has continued to move through southern China, raising concerns about ongoing flood risks.

Although no serious injuries or fatalities have yet been reported in Hong Kong from the current downpour, authorities remain on high alert. The rainstorm warning system is expected to remain in effect until conditions significantly improve. The Observatory will continue to monitor the situation and provide updates as necessary.


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