Heavy rain is forecast to continue across northern and north-central Vietnam, with parts of Hanoi expected to receive more than 250mm from the evening of Sept. 14 through the night of Sept. 15, raising the risk of urban flooding. Several rivers could also experience floods, while flash flood and landslide risks are rated high to very high in some areas.

Hanoi could see exceptionally heavy rain

Vietnam’s National Center for Hydro-Meteorological Forecasting has issued an updated assessment of rainfall, flooding, flash floods and landslide risks for Sept. 14, 2026.

Between 7 a.m. and 4 p.m. on Sept. 14, Hung Yen, Ninh Binh, southern Hanoi, the southern part of the former Hoa Binh Province, Thanh Hoa and northern Nghe An recorded heavy rain, generally ranging from 50-100mm, with some locations receiving more than 130mm.

Some of the highest totals were recorded in Hong Minh, Hung Yen, at 168mm; Khanh Trung, Ninh Binh, at 152mm; Nghia Dan, Nghe An, at 149mm; and Dinh Hoa, Thanh Hoa, at 148mm.

From the evening of Sept. 14 through Sept. 16, Bac Ninh and the former Hoa Binh Province are forecast to receive heavy to extremely heavy rainfall of 100-250mm, with localized totals exceeding 400mm.

Southern Lao Cai, covering areas that formerly belonged to Yen Bai Province, is expected to receive 70-150mm.

Hung Yen, Ninh Binh, southern Phu Tho and Thanh Hoa are forecast to receive 200-400mm, with some locations potentially exceeding 550mm.

Lang Son, northern Phu Tho, southern areas of Thai Nguyen, Tuyen Quang, Son La and Lao Cai, as well as Nghe An, are also forecast to experience moderate to heavy rain and thunderstorms, with totals generally ranging from 80-170mm and localized amounts exceeding 300mm.

Hanoi, in particular, is forecast to receive 100-250mm of heavy rain from the evening of Sept. 14 through the night of Sept. 15, with some southern parts of the capital exceeding 250mm.

Rain is expected to continue through Sept. 16.

Forecasters warned that intense downpours could exceed 100mm within three hours, creating a risk of urban flooding, particularly in low-lying areas.

Heavy rain across northern Vietnam and Thanh Hoa is expected to gradually ease from the night of Sept. 16.

Rivers could flood as landslide risks rise

Rivers from Quang Tri to Hue are currently receding, while rivers in northern Vietnam, Thanh Hoa and Nghe An remain below the first warning level.

From Sept. 14-16, however, floods could develop on several rivers in Phu Tho, Ninh Binh, Thanh Hoa and Nghe An, with water levels in some locations potentially exceeding the second warning level.

Authorities have warned of high to very high risks of flash floods and landslides in Phu Tho, Thanh Hoa, Nghe An, Ha Tinh and Quang Tri.

Low-lying areas, urban districts and industrial zones have also been advised to prepare for possible flooding.

Bao Anh