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Hong Kong Observatory Cancels Amber Rainstorm Warning

about 2 hours ago2 MIN
Hong Kong Observatory Cancels Amber Rainstorm Warning

Summary

The Hong Kong Observatory cancelled the Amber Rainstorm Warning Signal at 11:40am after heavy rain affected parts of the city earlier in the day. Before the cancellation, the Observatory had warned that strong thunderstorm bands south of Hong Kong could require an upgrade depending on their development, while outlying islands including Po Toi Island and Lamma Island saw particularly intense rainfall.

Key Points

  • The Hong Kong Observatory cancelled the Amber Rainstorm Warning Signal at 11:40am, ending a warning that had been in force since 8:40am.
  • During the warning period, rainfall on Po Toi Island and Lamma Island was at one stage exceptionally heavy and was expected to have exceeded 70 millimetres per hour.
  • The Observatory issued a localised heavy rain advisory for the Islands District, saying Po Toi Island could face serious flooding and urging residents to take precautions.
  • At 10:20am, the Observatory said persistent strong thunderstorm bands over waters south of Hong Kong meant any need for a Red Rainstorm Warning would depend on their movement and development.
  • The Observatory said upper-air disturbances and a southwesterly airstream would bring showers and squally thunderstorms today, with more frequent showers in some areas early tomorrow.

Why It Matters

Although the amber warning has been lifted, the Observatory said thunderstorms, squally showers and localised downpours could still affect Hong Kong in the near term, especially into early tomorrow. Residents in low-lying or outlying areas remain exposed to sudden flooding risk when hourly rainfall reaches or exceeds 70 millimetres.