This story has been made freely available as a public service to our readers. Please consider supporting SCMP’s journalism by subscribing. Hongkongers can expect more showers with some thunderstorms on Sunday, the weather forecaster has said, after widespread downpours on Saturday triggered an amber warning and left some hikers requiring rescue. The Hong Kong Observatory issued the amber rainstorm warning, the lowest in a three-tier system, at 11am. Rain was particularly heavy in Tai Po...