Beware of the risk of thunderstorms, tornadoes and strong gusts of wind before and during the storm.

Photo caption — Beware of the risk of thunderstorms, tornadoes and strong gusts of wind before and during the storm's landing. Illustrative photo (document): VNA

According to the National Center for Hydro-Meteorological Forecasting, at 10:00 a.m. on September 23, the center of the super typhoon was at about 20.2°N; 117.7°E, in the northeastern sea of the North East Sea. The strongest wind was level 16-17 (184-221 km/h), gusting above level 17. Moving in the West Northwest direction, at a speed of about 20 km/h.

The specific developments of storm No. 9 in the coming days are as follows:

At 10:00 on September 24, about 340 km east of Leizhou Peninsula (China) with strong winds of level 15-16, gusting over level 17; moving in the West Northwest direction, traveling 20-25 km per hour and gradually weakening. The affected area is the sea area north of the North East Sea with disaster risk level 4; east of the North Gulf of Tonkin

At 10:00 on September 25, the storm was in the sea area of Quang Ninh - Hai Phong with strong winds of level 10, gusts of level 12; moving westward, traveling 20-25 km per hour and continuing to weaken. The affected area is the northwest sea area of the North East Sea with disaster risk level 4; the Gulf of Tonkin, the coastal area of the Northeast with disaster risk level 3.

By 10 p.m. on September 25, the storm on land in the Northern Delta and midland region with strong winds of level 6, gusts of level 8; moving in the West Southwest direction, traveling 25 km per hour and weakening into a tropical depression. The affected area is the Gulf of Tonkin, the Northeast region of the North and Thanh Hoa. Natural disaster risk level 3.

At 10:00 a.m. on September 26, the tropical depression in the Upper Laos region moved west-southwest with winds of about 25 km/h and weakened into a low pressure area.

Due to the impact of the storm, the northern sea area of the North East Sea has strong winds of level 10-14, the area near the center of the super storm has winds of level 15-17, gusts above level 17, waves over 10m high; rough seas.

From September 24, the eastern sea of Bac Bo Gulf (including Bach Long Vy special zone) will have winds gradually increasing to level 6-7, gusting to level 9. From the evening and night of September 24, the Bac Bo Gulf area (including Bach Long Vy special zone, Van Don, Co To, Cat Hai and Hon Dau island) will have winds gradually increasing to level 8-9, waves 2-4m high, the area near the storm center will have winds of level 10-12, gusting to level 14, waves 4-6m high, and rough seas.

The coastal areas of Quang Ninh - Hai Phong provinces have storm surges of 0.5-1m high. There is a high risk of landslides on sea dykes and embankments, destruction of aquaculture areas, ships and boats anchored along the coast due to strong winds, rising sea levels and big waves.

On land, from the morning of September 25, coastal areas from Quang Ninh to Thanh Hoa have winds gradually increasing to level 6-7, then increasing to level 8, areas near the storm center have winds of level 9-10, gusting to level 12; areas deep inland in the Northeast have strong winds of level 6-7, gusting to level 8-9.

From the night of September 24 to the end of the night of September 26, the Northern region, Thanh Hoa and Nghe An will have heavy to very heavy rain with common rainfall of 100-250 mm, locally over 400 mm. Beware of heavy rain causing urban flooding.

Heavy rains can cause flooding in low-lying areas; flash floods in small rivers and streams, and landslides on steep slopes.

Source: https://baotintuc.vn/van-de-quan-tam/de-phong-nguy-co-xay-ra-dong-loc-va-gio-giat-manh-truoc-va-trong-khi-bao-do-bo-20250923120741490.htm