According to the National Center for Hydro-Meteorological Forecasting, in the past 6 hours (from 2am to 8am on August 23), the areas of Son La, Lao Cai and Quang Ninh provinces have had moderate to heavy rain such as Chieng Khay 55.8mm (Son La), Lung Vai 63.2mm (Lao Cai); Co To 55.8mm, Long Dinh 51.8mm (Quang Ninh);... Soil moisture model shows that some areas in the above provinces are nearly saturated (over 85%) or have reached a state of saturatation.
In the next 3 - 6 hours (from 8:45 a.m. on August 23), the above provinces will continue to have rain with common accumulated rainfall of 10 - 30mm, some places over 80mm.
In the next 6 hours (from 8:45 a.m. on August 23), there is a risk of flash floods on small rivers and streams, landslides on steep slopes in the above provinces, especially in the communes/wards of Muong Bu, Muong Chien, Muong Gion, Muong Khieng, Muong La in Son La province; Bac Ha, Ban Lau, Ban Lien, Cao Son, Lung Phinh, Muong Khuong, Pha Long, Si Ma Cai, Ta Cu Ty in Lao Cai; Co To Special Zone, Van Don Special Zone in Quang Ninh.
The meteorological agency warns that the risk of natural disasters due to flash floods, landslides, and land subsidence due to heavy rain or water flow is level 1.
Flash floods and landslides can have serious impacts on the environment, threaten people's lives; cause local traffic congestion, affect the movement of vehicles; civil works and economic infrastructure, causing damage to production activities and social life.
The meteorological agency recommends that localities proactively review flow bottlenecks and vulnerable areas to take timely preventive and response measures to the above risks.