From the night of September 10 to the morning of September 11, parts of the Northern Delta region, including Quang Ninh, Hai Phong, Thanh Hoa, Hoa Binh, and sections of Yen Bai and Lao Cai provinces, experienced continuous rainfall. Some areas saw accumulations ranging from 50 mm to 120 mm, with isolated locations receiving over 200 mm.
While heavy rains are expected to ease by the afternoon of September 11, localized downpours may still occur in certain areas across the Northern region.
Heavy rain causes many streets in Hanoi to be flooded.
According to the National Center for Hydro-Meteorological Forecasting, rising water levels today (September 11) pose significant flood risks. Flooding could affect low-lying regions along rivers, alluvial plains, and areas outside the main dykes. This may lead to dyke overflows, landslides, and severe impacts on vulnerable dyke systems, embankments, and riverside infrastructure in provinces such as Hanoi, Ha Nam, Nam Dinh, Hai Duong, Hung Yen, Thai Binh, and Ninh Binh.
Water in Thao river in Yen Bai have exceeded historical levels and are causing flooding in many places.
Areas with the highest flood risk include low-lying regions in Lang Son, Cao Bang, Lao Cai, Yen Bai, Phu Tho, Bac Giang, Bac Kan, Thai Nguyen, and Hoa Binh. Flash floods and landslides are also a major concern for the mountainous northern provinces.
Floods in rivers and streams are causing deep inundation in riverbank areas, including alluvial islands, impacting waterway traffic, aquaculture, agriculture, and economic activities—particularly in the lower reaches of the Red River and Thai Binh River systems.
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Source: Vietnam Insider