The Hong Kong Observatory issued its highest-level rainstorm warning, the black rainstorm signal, on July 29 as heavy downpours swept through the city, leading to flooding in several areas.⁣ ⁣ In a residential district on the eastern side of the region, the intense rainfall triggered a flash waterfall, with water streaming continuously down a hillside.⁣ ⁣ #Rainstorm #Flooding #HongKong #Weather #Alert⁣ ⁣