The Hong Kong Observatory has issued an amber rainstorm warning, with the signal expected to remain in place until 10pm on Sunday. The weather forecaster issued the warning at 8.20pm. “A few squally thunderstorms are expected to occur over Hong Kong,” a spokesman for the Observatory said. Showers would be heavy at times in the evening. The forecaster also warned that intense gusts reaching 70km/h (43mph) could affect the city. It said there would be flooding in some low-lying and poorly drained...