[UPDATE - Tuesday, July 17, 4.35pm]
The Hong Kong Observatory (HKO) issued typoon signal No 3 at 4.25pm today, as Son-Tinh will be closest to Hong Kong in the next few hours.
At about 4.25pm, the Hong Kong Observatory estimated that Tropical Depression Son-Tinh was about 300km south of the city.
According to the HKO, the chance of issuing signal No 8 remains low; however, they expect occasional squally showers tonight and tomorrow morning.
Members of the public are advised to stay away from the shoreline and not to engage in water sports.
The typhoon signal No. 1 was issued at 2.40am on Tuesday morning and remained in force in Hong Kong, although the city’s weather authorities said the chances of it being upgraded to signal No 3 before 2pm were not high.
It added local winds were not expected to strengthen significantly.
A tropical depression is the lowest classification for tropical cyclones.
The Observatory predicted that the tropical depression would move west towards Hainan Island and the Leizhou Peninsula.
The forecaster will consider whether to issue the strong wind signal in the afternoon or at night.
The forecast for the next few days is for showers and sunny intervals, although rain is expected from the weekend.