A cold airmass has caused widespread rainfall and thunderstorms across the Bắc Bộ and Bắc Trung Bộ regions of Vietnam starting late yesterday and continuing through early October 5th. Some areas have experienced very heavy rainfall. The meteorological agency is warning of a high risk of flash floods and landslides in numerous locations. Residents in Bắc Bộ and Bắc Trung Bộ are advised to take precautions. The inclement weather is expected to persist for the immediate future, necessitating continued vigilance. Authorities are monitoring the situation closely and preparing for potential disaster response. Further updates will be provided as the situation evolves.