Latest update from the National Center for Hydro-Meteorological Forecasting, at 7:00 p.m. on October 3, the center of storm No. 11 Matmo was at about 17.3 degrees north latitude; 119.4 degrees east longitude, in the eastern sea of the northern East Sea. The strongest wind near the storm center is level 10 (89-102 km/h), gusting to level 13. The storm is moving west-northwest at a speed of about 25 km/h.
It is forecasted that in the next 24 hours, the storm will move west-northwest, at a speed of about 25 km/h and is likely to strengthen.
At 7:00 p.m. on October 4, the center of the storm was at about 19.1 degrees north latitude; 114.0 degrees east longitude, in the northern East Sea, about 350 km east-southeast of the Lusian Peninsula (China).
According to the representative of the meteorological agency, this is also the time when the storm is strongest with strong winds of level 12, gusting to level 15.
The danger zone is latitude 15.5 degrees north - 21 degrees north, east of longitude 112 degrees east. Level 3 natural disaster risk for the northern East Sea area.
It is forecasted that in the next 48 hours, the storm will move west-northwest, at a speed of 20-25 km/h. At 7:00 p.m. on October 5, the center of the storm was at about 20.8 degrees north latitude; 109.4 degrees east longitude, in the sea east of the northern Gulf of Tonkin, about 200 km east-southeast of Mong Cai (Quang Ninh). Strong wind level 11, gust level 14.
The danger zone is north of latitude 17 degrees north, longitude 107.5 degrees east - 116 degrees east. Level 3 natural disaster risk for the northern East Sea and the northern waters of the Gulf of Tonkin.
It is forecasted that in the next 72 hours, the storm will move west-northwest, at a speed of about 20 km/h.
Both current storm scenarios predict that the focus of the storm will be in Quang Ninh province, only differently in the north of Quang Ninh or the south of Quang Ninh. After making landfall, the storm weakens into a tropical depression, followed by a low pressure area.
At 7:00 p.m. on October 6, the center of the tropical depression was at about 22.6 degrees north latitude; 105.2 degrees east longitude, in the mountainous provinces north of the North. Strong winds below level 6, gusting below level 8.
The danger zone is north of latitude 19 degrees north, west of longitude 112 degrees east. The natural disaster risk level is level 3 for the northwestern sea area of the northern East Sea, the northern area of the Gulf of Tonkin and the coastal areas of the provinces from Quang Ninh to Ninh Binh.
Regarding the impact of the storm at sea, the sea area east of the northern East Sea will have strong winds of level 8-9, the area near the center of the storm will have strong winds of level 10-11, gusts of level 14, waves 4-6 m high, and rough seas.
From the morning of October 4, the northern East Sea area will have strong winds of level 8-10, the area near the storm center will have winds of level 11-13, gusts of level 16, waves 4-6 m high, the area near the storm center will have waves of 6-8 m, the sea will be very rough.
From the afternoon of October 5, the sea area east of the northern part of the Gulf of Tonkin (including the Bach Long Vi special zone) will have winds gradually increasing to level 6-7, then increasing to level 8-9, near the storm's eye level 10-11, gusting to level 14, waves 2-4 m high, near the storm's eye 3-5 m, the sea is very rough. Ship operating in the above-mentioned dangerous areas are likely to be affected by thunderstorms, whirlwinds, strong winds and large waves.
Regarding the situation of heavy rain, the North, Thanh Hoa, Nghe An will face widespread rain lasting from the night of October 5 to the end of the night of October 7.
The Northern region and Thanh Hoa, Nghe An will have heavy to very heavy rain with common rainfall of 100 - 200mm, locally over 300mm. The focus of rain in the mountainous and midland areas of the North will have rainfall ranging from 150-250mm, locally over 400mm.
With such a rain situation, warn from October 6 to 9, in the North, Thanh Hoa, Nghe An, there will be 1 flood, the flood peak on the rivers will be from above alert level 2 to above alert level 3.
