Latest update from the National Center for Hydro-Meteorological Forecasting, due to the impact of storm No. 4, the Northeast region has moderate to heavy rain. Total rainfall from the night of August 21 to 10 pm on August 22 is commonly 50-100mm. Especially the areas of Quang Ninh, Lang Son, Hai Phong provinces have very heavy rain with common rainfall of 100-200mm, locally over 250mm such as Mau Son (Lang Son) 359mm, Ban Chat (Lang Son) 353mm, Hoanh Bo (Quang Ninh) 275mm, Ky Thuong (Quang Ninh) 299mm,...
At 10 pm on August 22, the storm center was located at about 20.9 degrees North latitude - 108.0 degrees East longitude, over the sea area of Quang Ninh - Hai Phong, about 110km east of Quang Ninh, about 140km east-northeast of Hai Phong, about 100km north of Bach Long Vi special zone. The strongest wind near the storm center is strong at level 8 (62-74 km/h), gusting at level 10.
Forecast for the next 24 hours, the storm will move in a South direction, at a speed of about 3 km/h.
By 10:00 PM on August 23, the storm's center will be located at about 20.4 degrees North latitude - 107.9 degrees East longitude; in the sea area north of Bach Long Vi special zone, about 130km east-southeast of Hai Phong. Wind intensity is strong at level 8, gusting at level 10.
Forecast for the next 48 hours, the storm will move in a Southeast-east direction, at a speed of about 5 km/h and is likely to strengthen further.
By 10 pm on August 24, the storm's center will be located at about 20 degrees North latitude - 108.6 degrees East longitude; in the Gulf of Tonkin area, about 100km east of Bach Long Vi special zone. Wind intensity is strong at level 9, gusting at level 11.
Forecast for the next 72 hours, the storm will move in a Northeast direction at a speed of about 5 km/h. By 10:00 PM on August 25, the storm's center will be located at about 20.8 degrees North latitude - 109.7 degrees East longitude; on the coastal area west of Leizhou peninsula (China). Wind intensity is strong at level 8, gusting at level 10.
From 72 to 120 hours later, the storm is likely to move northward, then Northwest, moving about 5km per hour and gradually weakening into a tropical depression.
Regarding the impact of the storm at sea, the Gulf of Tonkin area (including special zones: Bach Long Vi, Van Don, Co To, Cat Hai; Hon Dau island), the coastal sea area of Quang Ninh and Hai Phong provinces has strong winds of level 6-7, the area near the storm center passing through strong level 8, gusts of level 10; sea waves are 2-4m high; strong rough seas.
The coastal mainland of Quang Ninh and Hai Phong provinces has strong winds at level 6-7, gusts at level 8-9. Strong winds can blow off roofs, damage temporary structures, break down green trees, billboards; affecting electricity and traffic systems.
Regarding heavy rain, the Northeast region, the south of Phu Tho and Thanh Hoa provinces from the night of August 22 to the end of August 24 will have common rainfall of 60-120mm, locally over 200mm; especially Quang Ninh, Hai Phong commonly 150-250mm, locally over 400mm; Lang Son, Bac Ninh commonly 100-200mm, locally over 300mm.
Rain developments are forecast to likely continue after August 24. Heavy rain may cause flooding in urban areas, industrial parks and low-lying areas; increasing the risk of floods on small rivers and streams, flash floods and landslides in mountainous areas.
In addition, due to the impact of the storm's circulation, it is necessary to prevent the risk of thunderstorms, tornadoes and strong gusts of wind.
