Hong Kong experienced its first red rainstorm warning of the year on May 4, 2024, leading to widespread flooding and disruption across the territory. The heavy rainfall, attributed to an upper air disturbance, prompted the issuance of additional warnings for landslips and thunderstorms. The impacts were particularly felt in the New Territories area of Lohas Park, where vehicles were submerged in a flooded public car park, and in Tseung Kwan O, where road closures and bus suspensions disrupted daily life. The Saikung district recorded up to 140mm of rainfall in less than two hours, with more rain expected, leading to the suspension of school classes and limited services in some hospital clinics in the area.