According to the National Center for Hydro-Meteorological Forecasting, at 1:00 p.m. on August 23, the center of the storm was at about 17.4 degrees north latitude; 115 degrees east longitude, about 300 km east-northeast of Hoang Sa Special Zone. The strongest wind near the storm center is level 9 (75 - 88 km/h), gusting to level 11; moving west-northwest at a speed of about 25 km/h.
Storm No. 5 gusts to level 15 when in coastal waters from Thanh Hoa to Quang Tri
It is forecasted that in the next 24 hours, the storm will move west-northwest at a speed of 20 - 25 km/h and continue to strengthen.
At 1:00 p.m. on August 24, the center of the storm was at about 17.9 degrees north latitude; 110.1 degrees east longitude, in the sea south of Hainan Island (China). Strong wind level 11 - 12, gust level 14.
The danger zone is from 16 to 20 degrees north latitude; from longitude 108 to 117 degrees east longitude. Level 3 natural disaster risk, the affected area is the northern East Sea (including Hoang Sa special zone) and the sea off the coast of Quang Tri - Hue.
It is forecasted that in the next 48 hours, the storm will move west-northwest at a speed of 15 - 20 km/h.
At 1:00 p.m. on August 25, the center of the storm was at about 18.3 degrees north latitude; 106.2 degrees east longitude, in the coastal waters from Thanh Hoa to Quang Tri. Strong wind level 12, gust level 15. The danger zone is from 16 to 20 degrees north latitude; west of longitude 112.5 degrees east longitude. The natural disaster risk level is level 3 for the northwest of the East Sea (including Hoang Sa special zone), level 4 for the Gulf of Tonkin and the southern sea area of Quang Tri - Hue.
It is forecasted that in the next 72 hours, the storm will move west-northwest at a speed of 15 - 20 km/h and gradually weaken into a tropical depression.
At 1:00 p.m. on August 26, the center of the tropical depression was at about 18.9 degrees north latitude; 102.3 degrees east longitude, on the mainland of Central Laos. Strong wind level 6, gust level 8. The danger zone is from 16.5 to 20 degrees north latitude; west of the longitude 109.0 degrees east longitude. Level 3 natural disaster risk for the Gulf of Tonkin and southern Quang Tri - Hue.
Storm No. 5 causes a combination of very heavy rain and strong winds on land
At sea, the northern East Sea area (including Hoang Sa special zone) has strong winds of level 8 - 9, near the storm center level 10 - 11, gusts of level 14, waves 4 - 6 m high, the sea is very rough. From noon and afternoon of August 24, the sea area from Thanh Hoa to Hue (including Con Co and Hon Ngu specialties) will have winds gradually increasing to level 6 - 8, then increasing to level 9 - 10, near the storm's eye level 11 - 13, gusts of level 15, waves 4 - 6 m high, near the eye 6 - 8 m, the sea will be very rough. From the afternoon of August 24, the sea area north of the Gulf of Tonkin (including the Bach Long Vi special zone) will have winds gradually increasing to level 6 - 7, gusting to level 9, waves 2 - 4 m high, and rough seas.
The storm-prone water in coastal areas from Ninh Binh to northern Quang Tri will rise by 0.5 - 1.2 m. The water level in Sam Son (Thanh Hoa) is 3.2 - 3.6 m high, in Hon Ngu (Nghe An) is 3.3 - 3.8 m, in Vung Ang (Ha Tinh) is 2.2 - 2.8 m and in Cua Gianh (Quang Tri) is 1.5 - 2 m. There is a risk of flooding in low-lying coastal areas, river mouths, islands from Nghe An to northern Quang Tri.
On land, from the night of August 24, on land from Thanh Hoa to Quang Tri, the wind will gradually increase to level 7 - 9, near the storm center level 10 - 12, gusting to level 14 - 15.
Heavy rain from the night of August 24 to the end of August 26, the Northern Delta, Southern Phu Tho and from Thanh Hoa to Hue will have widespread heavy rain, common rainfall of 100 - 150 mm, some places over 250 mm; from Thanh Hoa to Quang Tri, heavy rain to very heavy rain, commonly 150 - 300 mm, some places over 600 mm. Warning of the risk of heavy rain over 200 mm/3h.
From August 25 to 26, the capital Hanoi and Da Nang will have moderate rain, heavy rain and thunderstorms; Ho Chi Minh City will have rain, showers and thunderstorms in the late afternoon and evening. During thunderstorms, beware of tornadoes and strong gusts of wind.
From August 25 to 27, upper Laos and central Laos will have heavy rain, with common rainfall of 100 - 250 mm, in some places in central Laos over 500 mm.
