When a tropical cyclone forms within or
enters the area bounded by 7-36N and 100-140E, the Observatory will issue the first tropical cyclone track within
two hours.
Notes
(1) When a tropical cyclone is located within the above area but outside the area
bounded by 10-30N and 105-125E, the Observatory will update the tropical cyclone track at 04:00, 10:00,
16:00 and 22:00 Hong Kong time (corresponding to the observation time at 02:00, 08:00, 14:00 and 20:00
respectively).
(2) Tropical cyclone warnings for shipping will be issued by the Observatory
for tropical cyclones located within the area bounded by 10-30N and 105-125E. The forecast tracks for these
tropical cyclones will be updated at 3-hourly intervals.
