The cold front combined with Typhoon No. 12 will cause heavy rain from the afternoon of October 22nd.

The strengthening cold front combined with Typhoon No. 12 will bring heavy rain to Central Vietnam, concentrated from the afternoon of October 22nd, leading to the risk of flash floods, landslides, and flooding.

A cold front combined with Typhoon No. 12 caused heavy rain in central Vietnam. Photo: VNA

According to the National Center for Meteorological and Hydrological Forecasting, on the morning of October 22nd, a cold front affected some areas in the Central region of Vietnam. At Bach Long Vi station, strong northeasterly winds of level 7, gusting to level 9, were recorded; at Con Co station, strong northeasterly winds of level 6, gusting to level 7, were recorded.

Forecasts indicate that on the afternoon and night of October 22nd, the cold air mass will continue to affect other areas in Central Vietnam. Inland areas will experience strong northeasterly winds of level 3, level 4 in coastal areas, and level 5 in some places; coastal areas of provinces from Quang Tri to Da Nang City will experience gradually increasing winds of level 6, sometimes level 7, with gusts of level 8-9, due to the influence of the circulation of typhoon No. 12 combined with the strong strengthening cold air mass. From the afternoon of October 22nd, winds will gradually strengthen to level 6, sometimes level 7, with gusts of level 8-9.

In the Northern region and Thanh Hoa , it will be cold in the morning and at night, with some mountainous areas experiencing freezing temperatures. The lowest temperatures in the plains and Thanh Hoa will be 19-22 degrees Celsius; in the midland and mountainous areas, the lowest temperatures will be 17-19 degrees Celsius; and in high mountainous areas, temperatures may drop below 16 degrees Celsius.

In the Hanoi area, it will be sunny during the day and rainless at night. It will be cool in the morning and at night. The lowest temperatures during this cold spell will generally be between 19 and 22 degrees Celsius.

According to Mr. Mai Van Khiem, Director of the National Center for Meteorological and Hydrological Forecasting, under the Department of Meteorology and Hydrology, due to the influence of the circulation of typhoon No. 12 combined with a strong increase in cold air, from the afternoon of October 22nd, coastal areas of provinces from Quang Tri to Da Nang city will experience increasingly strong winds, reaching level 6, sometimes level 7, with gusts of level 8-9.

Representatives from the meteorological agency specifically emphasized that due to the influence of the storm's circulation and cold air combined with easterly wind disturbances and topographic effects, central Vietnam is facing a period of very heavy rainfall.

From noon on October 22nd to October 27th, the area from Ha Tinh to Quang Ngai experienced widespread heavy rain. The total rainfall in the area from Ha Tinh to northern Quang Tri and Quang Ngai was generally around 200-400 mm, with some localized areas exceeding 500 mm.

Heavy rainfall was concentrated from the afternoon of October 22nd to the end of October 23rd. In southern Quang Tri, Hue, and Da Nang, rainfall was commonly 500-700 mm, with some areas exceeding 900 mm. Central Vietnam is likely to experience a large-scale flood, especially in the river basin from southern Quang Tri to Quang Ngai, with flood levels potentially exceeding alarm level 3 – equivalent to or even higher than the major flood of November 2017.

"The flood levels may not be as high as in 2020, but the complex nature of the situation until the end of October and the beginning of November requires continued monitoring and updates," Mr. Khiem analyzed.

The director of the meteorological agency further warned of the possibility of heavy rainfall with precipitation of 200-300 mm/3 hours, associated with the risk of flash floods and landslides in mountainous areas, and flooding in low-lying areas and urban areas. The National Center for Meteorological and Hydrological Forecasting recommends being prepared for the risk of thunderstorms, tornadoes, and strong gusts of wind in the area affected by the storm's circulation, both before and during the storm's landfall.

Due to the influence of a cold front combined with the circulation of Typhoon No. 12, the northern East Sea area (including the Hoang Sa Special Economic Zone) will experience strong northeasterly winds of force 7-8; particularly in the western sea area near the center of the typhoon, winds will be strong at force 9-10, gusting to force 12, with waves 3-5m high, and 5-7m high near the center of the typhoon. The sea will be very rough. The Gulf of Tonkin will have strong northeasterly winds of force 7, gusting to force 9, with rough seas and waves 2-4m high.

The sea area from Quang Tri to Quang Ngai (including Con Co Special Economic Zone, Ly Son Special Economic Zone and Cu Lao Cham Island) will experience strong winds of force 6-7, reaching force 8 near the storm's center, with gusts up to force 10, and waves 3-5 meters high. The sea will be very rough.

Experts warn that tornadoes, lightning, hail, and strong winds can damage agriculture, uproot trees, damage houses, and affect transportation and infrastructure. Heavy rains risk flooding low-lying areas; flash floods on small rivers and streams; and landslides on slopes. Intense rainfall over a short period can cause flooding in urban and industrial areas. Strong winds and high waves affect shipping and other activities at sea.

In particular, cold weather at night and in the morning can affect health, especially for the elderly and young children.

Source: https://baotintuc.vn/xa-hoi/khong-khi-lanh-ket-hop-bao-so-12-se-gay-mua-to-tu-chieu-2210-20251022103128634.htm