According to the bulletin issued at 3:05 p.m. on June 30 from the National Center for Hydro-Meteorological Forecasting, through monitoring on satellite images, lightning positioning data and weather radar images, convective clouds are developing in the area of Chuong My and Ung Hoa districts of Hanoi city.
In the next 10 minutes to 3 hours, the thunderstorm area in the Chuong My area will cause showers and may have thunderstorms in the Ha Dong district. The cloud area will then expand to other inner-city areas of the center of Hanoi such as Nam Tu Lien district, Thanh Xuan.... During thunderstorms, there is a possibility of tornadoes, lightning and strong gusts of wind.
The meteorological agency also said that the Northern region from now until the morning of July 2 is forecast to have moderate rain, heavy rain and thunderstorms, locally very heavy rain. Warning of the risk of local heavy rain with rainfall greater than 100mm within 3 hours.
Regarding the hydrological situation, the water level on the main rivers in the Red - Thai Binh river system fluctuates and is below alert level 1.
From now (June 30), until July 3, in the upper reaches of Thao, Lo, Cau, Thuong and Luc Nam rivers, small rivers in the Northern region are likely to experience a flood, with a flood amplitude of 2 - 4m on the rivers.
During this flood, flood peaks on small rivers, upstream of Thao River, Lo River, and small rivers are likely to rise to alert level 1 - alert level 2, some rivers are above alert level 2, downstream of Thao River, Lo River are still below alert level 1.
There is a high risk of flooding in low-lying areas along rivers, flash floods and landslides on steep slopes in the mountainous areas of the North. The warning level of natural disaster risk due to floods is level 1.
Floods on rivers and streams can cause flooding in low-lying areas along rivers, affecting activities such as waterway transportation, aquaculture, agricultural production, people's livelihood and socio-economic activities.
