According to the National Center for Hydro-Meteorological Forecasting, through monitoring on satellite images and weather radar images, convective clouds are developing in Thuan An and Phu Dong communes; Phuc Loi, Viet Hung, Bo De, Long Bien wards.... This cloud area tends to develop and expand towards the inner city of Hanoi.
Warning from the next 30 minutes to 3 hours (from 2:45 p.m. on September 1), Phuc Loi, Viet Hung, Bo De, Long Bien wards ... will have showers and thunderstorms; then affect Hong Ha, Ba Dinh, Hoan Kiem, Ngoc Ha, Tay Ho, Giang Vo wards ... The thunderstorm area may expand to other wards in Hanoi's inner city.
During the rain, there is a possibility of tornadoes, lightning and strong gusts of wind. The warning level of natural disaster risk due to tornadoes, lightning, and hail is level 1.
The Northern Delta and coastal areas, the area from Thanh Hoa to Ha Tinh during the day and night of September 1, are forecast to have scattered showers and thunderstorms with rainfall of 10 - 30mm, locally heavy rain over 80mm.
In the area from Quang Tri to Lam Dong and the South in the afternoon and evening of September 1, there will be showers and scattered thunderstorms with rainfall of 10 - 40mm, locally heavy rain over 90mm.
The meteorological agency warns of the risk of heavy rain with rainfall greater than 80mm within 3 hours. During thunderstorms, there is a possibility of tornadoes, lightning, hail and strong gusts of wind. Localized heavy rains are likely to cause flash floods on small rivers and streams, landslides on steep slopes and flooding in low-lying areas. The warning level of natural disaster risk due to tornadoes, lightning, and hail is level 1.