On the morning of July 17, in the Northern Delta, Hoa Binh and North Central regions there was moderate rain, heavy rain and thunderstorms, locally in some places it rained very heavily with a common rainfall of 15-30mm, locally in some places over 70mm. From the afternoon of July 17, heavy rain gradually decreased.
From July 17-18, the Central Highlands and Southern regions had moderate rain, heavy rain and thunderstorms, locally in some places it rained very heavily with a common rainfall of 40-80mm, locally in some places over 120mm (rain concentrated in afternoon and night).
In addition, on the evening and night of July 17 in the Northern and Central regions there were scattered showers and thunderstorms, locally in places there was heavy to very heavy rain with rainfall from 15-30mm, locally in some places over 70mm.
The National Steering Committee for Natural Disaster Prevention and Control added that, day and night of July 17, the sea area from Khanh Hoa to Binh Thuan, the western sea of the South East Sea region (including the western sea of Truong Sa archipelago ) ) there is a strong southwest wind level 6, gusts level 7-8, rough seas.
In addition, on the day and night of July 17, in the sea area from Ba Ria-Vung Tau to Ca Mau, the southwest sea of the Mid-East Sea area had strong southwest winds of level 5, sometimes level 6, with gusts of level 7-8; Sea waves are 2.0-3.0m high; rough sea.
The North, Middle and South areas of the East Sea (including the waters of the Hoang Sa and Truong Sa archipelagos), the Gulf of Tonkin, the waters from Quang Tri to Quang Ngai, Binh Thuan to Ca Mau, Ca Mau to Kien Giang and the Gulf Thailand has showers and strong thunderstorms. During thunderstorms, there is a possibility of tornadoes and strong winds of level 7-8.
Regarding the hydrological situation, the water level of the rivers in the Northern region at 7:00 a.m. on July 17 on the Red River at Hanoi station was 4.20m; on Thai Binh river at Pha Lai station is 1.24m.
It is forecasted that the water level downstream of the Red River will rise rapidly, on the afternoon of July 17 at Hanoi station it is likely to be at 5.40m, then change slowly; In the next 36 hours, the highest water level at Pha Lai is likely to be at 1.55m and the lowest at 1.30m. The water level of Lo River in Tuyen Quang will rise quickly but still below the BDI.
In the rivers of the Central and Central Highlands, the water level of the rivers changes slowly, the water level of the downstream rivers fluctuates according to reservoir regulation and tides.
In the Southern rivers, the water level in the Mekong River's upstream fluctuates with the tide. By July 20, the highest daily water level in Tan Chau was 1.55m, in Chau Doc was 1.75m.
