People in Thai Nguyen light flares to signal for help, staying up all night to hold out against rising floodwaters.

09/10/2025

The historic flood on the Cau River, caused by the remnants of Typhoon Matmo and heavy rains from the evening of October 6th, brought record rainfall to Thai Nguyen, with water levels exceeding previous flood peaks and isolating more than 5,400 houses. On the night of October 7th, residents in deeply flooded areas such as Gia Sang and Phan Dinh Phung had to climb onto rooftops and fire SOS flares to signal for help. In response to the critical situation, thousands of officers and soldiers were mobilized in a large-scale rescue operation to evacuate people and property from the dangerous areas.

Thai Nguyen is currently battling a historic flood on the Cau River, surpassing all previous records and leaving thousands of residents struggling through sleepless nights, desperately seeking help.

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The combined influence of Typhoon Matmo's circulation and upper-level wind convergence unleashed a torrential downpour on Thai Nguyen province from the evening of October 6th, causing severe flooding, isolating over 5,400 homes, and paralyzing much of the city center. Many locals consider this event the worst flood in the past 60 years.

Theo đánh giá của các ngành tỉnh Thái Nguyên, đây là đợt “thiên tai chồng thiên tai”. Hoàn lưu bão số 11 đã gây tác động chưa từng có trong tiền lệ tại địa phương này

According to assessments by relevant departments in Thai Nguyen province, this is a case of "natural disaster upon natural disaster." The remnants of Typhoon No. 11 have caused unprecedented impacts in this locality.

From 7 PM on October 6th to 4 PM on October 7th, the meteorological agency recorded rainfall in Thai Nguyen generally ranging from 200-400 mm, with some areas exceeding 500 mm, such as Hoa Thuong station (564 mm) and Gia Bay station (541 mm). This extremely heavy rainfall caused the water level of the Cau River to rise rapidly, exceeding all forecasts.

Do ảnh hưởng của hoàn lưu bão số 11 (tên quốc tế Matmo), từ đêm 6 đến ngày 7/10, tỉnh Thái Nguyên đã hứng chịu một đợt mưa lớn trên diện rộng, lượng mưa phổ biến 250–400mm, nhiều nơi vượt 500mm

Due to the influence of the circulation of Typhoon No. 11 (international name Matmo), from the night of October 6th to October 7th, Thai Nguyen province experienced widespread heavy rainfall, with precipitation generally ranging from 250–400mm, and exceeding 500mm in many areas.

At the Gia Bay Hydrological Station (Gia Sang Ward), at 4 PM on October 7th, the water level of the Cau River reached 29.26 m, exceeding the third warning level by 2.26 m and surpassing the historical flood peak (established after Typhoon Yagi in 2024) by approximately 0.45 m. The situation continued to worsen during the night. By 7:30 PM on October 7th, the water level had reached 29.57 m, officially exceeding last year's historical flood peak by approximately 0.76 m. At its peak, from 2-3 AM on October 8th, the water level of the Cau River at the Gia Bay station remained at an extremely dangerous warning level, reaching 29.89 – 29.90 m.

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The Thai Nguyen Meteorological and Hydrological Station has issued a warning about the risk of a historic flood on the Cau River, putting 21 out of 92 communes and wards in the province at risk of widespread flooding. In particular, riverside areas such as Gia Sang and Phan Dinh Phung wards in the center of Thai Nguyen City, along with areas like La Hien and Dan Tien (Vo Nhai commune), have been surrounded by floodwaters, with some areas submerged up to 4 meters deep.

Amidst rising floodwaters that spiraled out of control, the center of Thai Nguyen lost power and was plunged into complete darkness. After nearly a day of isolation and cut off from communication, residents in the flooded areas had to battle through the night to stay safe. Many families had to close their roller doors to prevent water from entering their homes and moved all their belongings to the second floor or climbed onto the roof to escape the raging currents.

Trong đêm người dân vùng bị cô lập phải đốt pháo sáng kêu cứu

During the night, people in the isolated area had to light flares to signal for help.

According to preliminary statistics as of 5:00 AM on October 8th, Thai Nguyen province recorded 4 deaths, 2 missing persons, and 2 injured. Throughout the province, 5,450 houses were affected, including 22 houses with damaged roofs, 359 houses affected by landslides, and 70 houses requiring urgent relocation; 5,096 houses were flooded or isolated, of which 490 were evacuated in time.

In the middle of the night on October 7th, a terrifying and moving image was captured: a long streak of light, believed to be an SOS flare, rose from an isolated area. This action was not only a warning but also a desperate cry for help from residents enduring the raging floodwaters all night, after having to share their coordinates on social media to request assistance. Despite the cold, rainless night, anxiety remained as floodwaters from upstream continued to pour in. Immediately, an emergency rescue operation was activated by the authorities in Thai Nguyen. Military Region 1, the Provincial Military Command, and the Thai Nguyen Provincial Police mobilized thousands of officers, soldiers, militia members, and youth to participate in the rescue effort.

Mưa lũ làm sạt lở, ngập úng nhiều tuyến giao thông, gây chia cắt, cô lập nhiều địa phương như Võ Nhai, Tràng Xá, Dân Tiến, Nam Hòa, Hợp Tiến, Linh Sơn, Phan Đình Phùng, Quan Triều, Văn Lang… Các lực lượng cứu hộ đã khẩn trương tiếp cận, đưa người dân vùng ngập sâu đến nơi an toàn

Heavy rains and floods caused landslides and inundation on many roads, cutting off and isolating many localities such as Vo Nhai, Trang Xa, Dan Tien, Nam Hoa, Hop Tien, Linh Son, Phan Dinh Phung, Quan Trieu, Van Lang… Rescue forces have urgently reached and brought people from deeply flooded areas to safety.

Authorities used rescue boats to reach deeply flooded residential areas, focusing on assisting with the evacuation of residents and moving property from dangerous zones. The rescue team's tireless efforts throughout the night helped many families escape danger. However, traffic in the city center was completely paralyzed as many roads were submerged in nearly a meter of floodwater, and at intersections and bridge areas, the strong currents posed significant risks.

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By noon on October 8th, floodwaters from the Cau River continued to inundate residential areas in Gia Sang and Phan Dinh Phung wards. Residents had to use every means possible, from trucks to boats, to navigate the streets, evacuate belongings, or wade through the floodwaters to find clean water. With the devastation caused by this flood, which is recorded as exceeding the historical peak flood level after Typhoon Yagi in 2024, the recovery efforts and stabilization of people's lives in Thai Nguyen are predicted to be prolonged and fraught with difficulties.

Khanh Linh - Source: Compilation
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