Latest update from the National Center for Hydro-Meteorological Forecasting, at 4:00 a.m. on September 28, the center of storm No. 10 Bualoi was at about 16.2 degrees north latitude; 110.2 degrees east longitude, in the sea west of Hoang Sa special zone, about 200 km east of Da Nang city. The strongest wind near the storm center is level 12 (118-133 km/h), gusting to level 15. The storm is moving west-northwest at a speed of 30 km/h.
This is a very fast moving storm (nearly double the average speed), strong in intensity, wide range of influence, which can cause the combined impact of many types of natural disasters such as strong winds, heavy rain, floods, flash floods, landslides and coastal flooding.
Storm strengthens in the next 12 hours before making landfall
It is forecasted that in the next 12 hours, the storm will move west-northwest at a speed of about 30 km/h and is likely to strengthen. At 4:00 p.m. on September 28, the center of the storm was at about 17.5 degrees north latitude; 107.6 degrees east longitude, in the waters of Nghe An - Quang Tri. Strong wind level 12-13, gust level 16.
The danger zone is from latitude 14.0 degrees north to 20.0 degrees north, west of longitude 113.0 degrees east. Level 3 natural disaster risk for the western sea area of the northern and central East Sea (including Hoang Sa special zone), the sea area from Thanh Hoa to Quang Ngai.
It is forecasted that in the next 24 hours, the storm will move west-northwest at a speed of about 25-30 km/h, entering the mainland of the Central provinces. At 4:00 a.m. on September 29, the center of the storm was at about 18.9 degrees north latitude; 105.2 degrees east longitude, on the mainland of the provinces from Thanh Hoa to Ha Tinh. Strong winds of level 9-10, gusting to level 13.
The danger zone is from latitude 15.0 degrees north to 20.0 degrees north, west of longitude 112.0 degrees east. The natural disaster risk level is level 4 for the coastal mainland area from Nghe An to the north of Quang Tri, level 3 for the western sea area of the northern and central East Sea (including Hoang Sa special zone), the sea area from Thanh Hoa to Quang Ngai.
It is forecasted that in the next 36 hours, the storm will move west-northwest at a speed of about 20-25 km/h, moving deep into the mainland and weakening into a tropical depression, then a low pressure area in the Upper Laos area. At 4:00 p.m. on September 29, the center of the low pressure area was at about 20.6 degrees north latitude; 102.0 degrees east longitude. Wind power below level 6.
The danger zone is north of latitude 16.0 degrees north, west of longitude 106.5 degrees east. Level 3 natural disaster risk for the area from Thanh Hoa to Quang Tri (including Hon Ngu island) and the northern Gulf of Tonkin (including Bach Long Vy, Van Don, Co To, Cat Hai and Hon Dau island), the mainland area from Ninh Binh to Quang Tri.
Storm causes heavy rain and strong winds on land from today
At sea, the sea area west of the northern and central East Sea (including Hoang Sa special zone) will have strong winds of level 8-9, near the center of the storm will have winds of level 10-13, gusts of level 16, waves 6-8 m high, near the center of the storm 8-10 m, the sea will be very rough. The sea area from Thanh Hoa to Quang Ngai (including Hon Ngu island, Con Co and Ly Son special areas) will have strong winds of level 6-7, then increase to level 8-9, the area near the storm's eye will have levels 10-13, gusts of level 16, waves 5-7 m high, and rough seas. Excessive destructive power, extremely strong waves, and the ability to sink heavy ships.
In the northern Gulf of Tonkin (including Bach Long Vy, Van Don, Co To, Cat Hai and Hon Dau island), the wind will gradually increase to level 6-7, then increase to level 8-9, gust to level 11, waves 3-5 m high, very rough seas, very dangerous for ships.
The storm surge in coastal areas and islands from Ninh Binh to Ha Tinh is 0.5-1.5 m high, while South Thanh Hoa to North Ha Tinh is 1.0-1.5 m high. The risk of flooding dykes, coastal roads, and riverbanks in the evening and night of September 28 due to rising sea water and waves during the storm is very high. Warning: The weather at sea and in coastal mainland during the storm is extremely dangerous, unsafe for any vehicle or structure in the danger zone. Vehicles are likely to overturn or be destroyed; flooded due to strong winds, large waves and rising sea levels.
On land, the area from southern Quang Tri to Da Nang city will gradually increase to level 6-7, gusting to level 8-9. From noon on September 28, on the mainland from Thanh Hoa to northern Quang Tri, the wind will gradually increase to level 6-7, then increase to level 8-9, near the storm center level 10-12, gusting to level 14. From the afternoon of September 28, coastal areas from Quang Ninh to Ninh Binh will have strong winds of level 6-7, gusting to level 8-9.
From September 28-30, in the North and the area from Thanh Hoa to Quang Ngai, there will be widespread heavy rain with a total rainfall of 100-300 mm, locally over 450 mm. In the Northern Delta, southern Phu Tho and from Thanh Hoa to northern Quang Tri, the average is 200-400 mm, locally over 600 mm. Warning of the risk of heavy rain over 200 mm in 3 hours.
