
'Mature' mechanism in place for severe weather: CS
Chief Secretary Eric Chan says no one could have predicted Tuesday's heavy rain would last so long. File photo: Reuters
Hong Kong has a "mature" mechanism that will be activated automatically to respond to inclement weather despite challenges in predicting rainfall, Chief Secretary Eric Chan said on Saturday.
Torrential rain pounded the city in recent weeks, prompting the Hong Kong Observatory to issue four black rainstorm warnings within a space of eight days. The fourth signal, issued on Tuesday, was up for more than 11 hours.
"I can honestly say that no one could have predicted the downpours would last this long, nor could anyone have predicted the rain's intensity," Chan told a Commercial Radio programme.
Chan also defended the government's decision not to hold a meeting of an inter-departmental committee that he chaired – which last convened to make preparations in response to Tropical Cyclone Danas in July.
The Emergency Monitoring and Support Centre, he said, will be up and running whenever a black rainstorm alert or a No 8 typhoon signal is in force.
"While we might not be able to predict rainfall sometimes, we have a response mechanism that can be up and running immediately," Chan said.
"This time proved that the existing mechanism was operating smoothly.
"I hope residents understand that not holding a meeting of the steering committee does not mean there was less protection."
The steering committee on handling extreme weather will meet and make advanced preparations when extreme weather conditions are expected to have a widespread and severe impact on the city, Chan added.

Try Our AI Features
Explore what Daily8 AI can do for you:
Comments
No comments yet...
Related Articles


South China Morning Post
2 days ago
- South China Morning Post
‘Extreme conditions' notice not a stop-work order, Eric Chan tells Hongkongers
An 'extreme conditions' announcement in Hong Kong does not constitute an order to suspend work, the No 2 official has said, following criticism that the government did not make such a declaration to prevent workers from commuting ahead of Tuesday's record-breaking downpours. Chief Secretary Eric Chan Kwok-ki on Saturday addressed criticism for failing to convene a steering committee meeting on handling extreme weather, which he chairs. He said that members of the public were well protected as the committee's emergency coordination command centre was automatically activated, with all-out support across all government departments to address devastation. 'The 'extreme conditions' announcement is not a work-suspension order. I hope members of the public do not have this kind of misunderstanding,' he told a radio programme. The highest-level black rainstorm warning remained in force for more than 11 hours on Tuesday, as the poor weather triggered flash floods and landslides. Play The city has already recorded the highest number of black rainstorm signals for a single year, with the Hong Kong Observatory issuing four such warnings within eight days as of Tuesday.


RTHK
2 days ago
- RTHK
'Mature' mechanism in place for severe weather: CS
'Mature' mechanism in place for severe weather: CS Chief Secretary Eric Chan says no one could have predicted Tuesday's heavy rain would last so long. File photo: Reuters Hong Kong has a "mature" mechanism that will be activated automatically to respond to inclement weather despite challenges in predicting rainfall, Chief Secretary Eric Chan said on Saturday. Torrential rain pounded the city in recent weeks, prompting the Hong Kong Observatory to issue four black rainstorm warnings within a space of eight days. The fourth signal, issued on Tuesday, was up for more than 11 hours. "I can honestly say that no one could have predicted the downpours would last this long, nor could anyone have predicted the rain's intensity," Chan told a Commercial Radio programme. Chan also defended the government's decision not to hold a meeting of an inter-departmental committee that he chaired – which last convened to make preparations in response to Tropical Cyclone Danas in July. The Emergency Monitoring and Support Centre, he said, will be up and running whenever a black rainstorm alert or a No 8 typhoon signal is in force. "While we might not be able to predict rainfall sometimes, we have a response mechanism that can be up and running immediately," Chan said. "This time proved that the existing mechanism was operating smoothly. "I hope residents understand that not holding a meeting of the steering committee does not mean there was less protection." The steering committee on handling extreme weather will meet and make advanced preparations when extreme weather conditions are expected to have a widespread and severe impact on the city, Chan added.


HKFP
2 days ago
- HKFP
Hong Kong Observatory looks to expand use of AI forecasting models for extreme weather prediction
The Hong Kong Observatory is considering expanding the use of artificial intelligence (AI) forecasting models to predict extreme weather conditions, a meteorologist has said, after the models predicted Tuesday's torrential rain. The Observatory's acting senior scientific officer He Yuheng said on Friday that the AI models predicted a week in advance the movement of a westward rainband that affected the coast of Guangdong province last weekend and triggered a black rainstorm warning on Tuesday. Speaking on RTHK on Friday, He said that rainfall and rain distribution forecasts made with AI prediction tools might not be fully accurate but would still help the Observatory make predictions earlier. The meteorologist's remarks come after Hong Kong recorded 358.8 millimetres of rainfall at its Tsim Sha Tsui headquarters at 5pm on Tuesday, marking the highest daily rainfall in August since records began in 1884. The Tuesday rainstorm marked the fourth time the black rainstorm signal, the city's highest rain warning, was hoisted this year – all in a week. The Hong Kong Observatory raised the black rainstorm signal twice within six hours earlier this week: first at 11.45pm on Monday, before lowering it to the red rainstorm warning at 2.10am on Tuesday, then again, more than three hours later, at 5:50am. The second black rainstorm signal lasted more than 11 hours, causing widespread flooding across the city. The Observatory began using AI models on a trial basis in mid-2023, He said. Now, AI models are just as capable, if not more so, than conventional methods for predicting large-scale meteorological patterns, including the area or intensity of an anticyclone aloft or subtropical ridge, he said. The Observatory's use of AI is still at a 'preliminary stage,' but AI models 'have reached – or even slightly surpassed – the level of conventional methods,' the meteorologist said. He also said that AI models boasted a smaller margin of error between 300 to 500 kilometres, when producing five-day forecasts of tropical cyclone paths, compared with the 500 to 800 kilometres for traditional models. Predicting the intensity of typhoons, however, was a weak point of AI models, He said. Meanwhile, a major road in the New Territories damaged by a landslide triggered by Tuesday's downpour has been partially reopened. The Highways Department announced on Thursday evening that a single lane of Bride's Pool Road was back in service for two-way traffic.