1. Black Rainstorm, 2023
This particular rainstorm that hit Hong Kong on September 7 and 8 was definitely one for the history books. As the remnants of tropical cyclone Haikui passed by, a Black Rainstorm Warning was issued for an unprecedented duration of 16 hours and 35 minutes – the longest ever recorded since the warning system was introduced in 1992. On September 7, the Hong Kong Observatory measured an astounding hourly rainfall of 158.1 millimetres, shattering records dating back to 1884.
The storm brought about flash floods and landslides, causing widespread disruptions to traffic and damage to buildings. Initial reports mentioned 75 landslides and 60 instances of flooding. People found themselves stranded in various parts of the city, with some having to evacuate their homes. Temporary interruptions occurred in power and water supply in certain areas. Sadly, two fatalities were reported, and over 140 individuals were injured during the rainstorm.