According to the National Center for Hydro-Meteorological Forecasting, Bach Long Vy island district has strong winds of level 6-7, gusting to level 8-9; Con Co island has strong winds of level 7, gusting to level 8.
During the day and night of October 30, the Gulf of Tonkin, the sea area of Quang Tri, and the sea area northwest of the North East Sea will have strong winds of level 6, gusting to level 7-8. Rough seas, waves 2-4m high. From the night of October 30, the wind will gradually decrease.
The northeastern sea area of the North East Sea has winds gradually increasing to level 7 - 8, gusting to level 9 - 10. The sea is rough, with waves 3 - 5m high.
The sea area from Khanh Hoa to Ninh Thuan; the central East Sea area has strong winds of level 6, gusting to level 7-8. Rough sea, waves from 2 - 4m high. From the night of October 30, the wind will gradually decrease.
The sea area from Binh Thuan to Ca Mau, the sea area west of the South China Sea (including the sea area west of Truong Sa archipelago) has strong winds of level 5, sometimes level 6, gusting to level 7 - 8. Rough sea, waves from 2 - 3m high.
Gulf of Tonkin, the North and Central East Sea (including the waters of the Hoang Sa archipelago), and the waters from Quang Tri to Quang Ngai will have showers and thunderstorms. There is a possibility of tornadoes and strong gusts of wind during thunderstorms.
On the day and night of October 31, the northeastern sea area of the North East Sea will have strong winds of level 10 - 12, gusting to level 15; rough seas; waves 5 - 7m high.
The meteorological agency warned that the level of disaster risk due to strong winds at sea is level 2.
All vessels operating in the above areas are at high risk of being affected by cyclones, strong winds and large waves.