Rainfall of 50-120 mm is forecast across Thai Nguyen, Tuyen Quang, Phu Tho, Lao Cai, Lai Chau, Dien Bien and Son La provinces, with some areas expected to receive more than 250 mm, according to the National Centre for Hydro-Meteorological Forecasting.
The forecast also warns of thunderstorms, flash floods, landslides and urban flooding, with rainfall exceeding 100 mm within three hours possible in some locations.
Authorities have urged local governments to monitor weather conditions, relocate residents from high-risk areas, clear drainage channels and prepare emergency response teams. Traffic restrictions may also be imposed on flooded roads and areas affected by landslides.
Officials have also been asked to inspect dams, reservoirs, mining sites and construction projects, while maintaining emergency response teams and public warning systems.
