Tropical Cyclone Warning Bulletin Here is the latest Tropical Cyclone Warning Bulletin issued by the Hong Kong Observatory. The Standby Signal, No. 1 is in force. This means that a tropical cyclone now centred within about 800 kilometres of Hong Kong may affect us. At 4 a.m., Tropical Storm Mitag was estimated to be about 240 kilometres east-southeast of Hong Kong (near 21.4 degrees north 116.3 degrees east) and is forecast to move northwest at about 15 kilometres per hour in the general direction of the coast of eastern Guangdong and intensify gradually. Dispatched by Hong Kong Observatory at 03:45 HKT on 19.09.2025