
Flash floods in northern Vietnam destroyed homes and left five missing. A key highway linking Hanoi to the north is damaged. Up to 250 mm more rain expected through Sunday.
Flash floods swept through Lai Chau and Son La provinces early Friday, killing at least one person and leaving five others missing. The waters damaged a key highway linking Hanoi with northern provinces and destroyed a dozen homes.
The hardest-hit areas included Muong Than and Than Uyen communes in Lai Chau, and Ngoc Chien commune in Son La. Heavy overnight rain driven by a low-pressure trough sent torrents off mountains more than 1,000 meters high, overwhelming drainage and sweeping across National Highway 32.
The Phuc Than observation station recorded 206 millimeters of rain between 9 a.m. Thursday and 9 a.m. Friday, the National Center for Hydro-Meteorological Forecasting said. The bulk fell overnight, catching many residents asleep.
In Hamlet 11 of Muong Than Commune, floodwaters collapsed two multi-story houses, tore apart sections of the highway, and toppled power poles. A family of four was swept away when their home was destroyed. The father was found more than a kilometer downstream with a broken leg. Rescuers continued searching for his wife and two children as of Friday afternoon.
Local officials in Than Uyen Commune mobilized personnel to evacuate residents from landslide-prone areas. Floodwaters also rose in neighboring Muong Kim Commune, overflowing streams and paralyzing traffic.
Authorities in Lai Chau confirmed one death, five missing, and two injuries, all in Muong Than and Than Uyen. The floods destroyed or damaged 22 houses in the region. Thirteen homes were washed away in Muong Than alone. Five houses in Pa U Commune were damaged by landslides.
In Son La's Ngoc Chien Commune, a landslide buried three homes in Dong Xuong Village. No casualties were reported because residents had evacuated before the debris struck, the commune People's Committee said.
The weather service warned that the danger is not over. From Friday night through Sunday, mountainous and midland areas in northern Vietnam can expect another 60 to 120 mm of rain, with isolated spots receiving more than 250 mm. Rainfall intensity may exceed 100 mm within a single three-hour window, raising the risk of urban flooding, flash floods, and landslides.
Rain is expected to continue through Sunday night into Monday, delivering 20 to 50 mm widely and more than 100 mm locally. After days of rainfall, soil moisture models indicate that Lai Chau, Dien Bien, Son La, and Lao Cai provinces are near or at full saturation, the center said, making the ground unstable and prone to further slides.
The damage to National Highway 32, a crucial transport corridor connecting Hanoi with Phu Tho, Lao Cai, and Lai Chau, has cut off road access between Lai Chau and Dien Bien provinces, creating transit disruptions that could affect the movement of agricultural goods and supplies in the region.
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