According to the National Center for Hydro-Meteorological Forecasting, last night and this morning (September 21), the mountainous areas of the Northeast and Central Highlands had some places with heavy rain and thunderstorms. Rainfall from 7pm on September 20 to 8am on September 21 was measured by monitoring stations over 40mm such as: Phi Hai station (Cao Bang) 68.4mm, Dak Gan 3 station (Lam Dong) 42.6mm,...
In the area from Thanh Hoa to Lam Dong and the Southeast region in the afternoon and evening of September 21, there will be scattered showers and thunderstorms with rainfall of 15 - 30mm, locally heavy to very heavy rain over 100mm.
In the Northern region, on the night of September 21, there will be scattered showers and thunderstorms with rainfall of 10 - 30mm, locally heavy rain over 70mm.
Warning of the risk of heavy rain with rainfall greater than 70mm 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.
Data analyzed by the meteorological agency also shows that from now until October 10, the Northern Delta and the provinces from Thanh Hoa to Gia Lai will have a total rainfall generally 5 - 15% higher than the average of many years. The remaining areas will have rainfall 5 - 10% lower than the average of many years in the same period.
The Northern Delta and the provinces from Thanh Hoa to Quang Ngai in the next month are likely to experience some widespread heavy rains. The Southern region and other places in the Central region will have many days of showers and thunderstorms; in which, some days may have moderate to heavy rain.
On a national scale, there is a continued possibility of dangerous weather phenomena such as thunderstorms, whirlwinds, lightning, hail and strong gusts of wind.