Hong Kong Observatory issues red rainstorm warning

This story has been made freely available as a public service to our readers. Please consider supporting SCMP’s journalism by subscribing. The Hong Kong Observatory issued a red rainstorm warning on Monday evening and forecast heavy rain for the next 24 hours. The forecaster first issued an amber warning – the lowest level in a three-tier system – at 7.20pm before upgrading it to red 30 minutes later. Earlier, at 5pm, it warned that rainfall could reach around 100mm (four inches) in 24 hours as.