The Hong Kong Observatory issued an amber rainstorm warning at 10.05am on Wednesday and urged residents to take precautions such as staying away from watercourses. The forecaster warned that widespread heavy rain could affect Hong Kong in a couple of hours and that intense gusts could continue to affect the city. It told residents to stay vigilant during the adverse weather. “This means that heavy rain has fallen or is expected to fall generally over Hong Kong, exceeding 30mm in an hour, and is...