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Climate change
Opinion
SCMP Editorial

EditorialCommunity preparation is key as Hong Kong braces for extreme weather

As the city explores green infrastructure and AI forecasting as mitigation solutions, residents must also take up the mantle of safety

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People brave the rain at Wan Chai promenade while a black rainstorm warning is issued by the Hong Kong Observatory on August 14, 2025. Photo: Nora Tam
The long-range weather forecast for Hong Kong may seem like good news at first. The city’s weather experts have predicted four to seven typhoons between the months of June and October, or fewer than half the record-breaking 14 recorded last year. However, complacency could be dangerous. The Hong Kong Observatory also projects above normal temperatures under the influence of the warming El Nino weather phenomenon amid intensifying global climate challenges.

Hong Kong Observatory director Chan Pak-wai said on Monday that Hong Kong’s annual mean temperature has a high chance of reaching the “warmest top 10 on record”. He said residents should prepare for heavy rain and localised torrential downpours. Chan’s warning takes on greater urgency in a city emerging from its warmest winter since records began in 1884. The numbers reflect a shift to a “new normal” of mercury rising and blurred seasonal lines – as well as more frequent severe conditions.

Even in relatively “quiet” years, a single No 10 signal storm can be devastating. And even without any direct hits, the threat of black rainstorms is damaging and potentially deadly. In 2025, there were a record five such warnings. Hong Kong must continue to move away from a posture of reaction to one of foresight. It is good that green infrastructure and artificial-intelligence-driven forecasting are being explored to mitigate the downpours that can pose as much risk as high winds and waves.
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Authorities also deserve praise for gearing up for the more recent severe weather with greater swiftness than in many past storms. City workers were out clearing drains and deploying powerful pumping robots to high-risk areas. Clear alerts were delivered about the duration of typhoon signals, well in advance. Even storm chasers seem to be getting the message about not playing games with their safety and that of rescuers.

The shifting effects of nature are, of course, impossible to predict with great certainty. Community preparation is the only sensible response. As authorities try to improve infrastructure and emergency responses, disciplined individual preparation will be critical to keep the city safe in an era of unpredictable extremes.

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