Northern and North Central regions have thunderstorms, with some places having heavy rain.

According to the National Center for Hydro-Meteorological Forecasting, in the evening and night of August 17, the Northern and North Central regions will have scattered showers and thunderstorms, with localized heavy rain with rainfall of over 50mm; thunderstorms may cause tornadoes, lightning and strong gusts of wind. Localized heavy rain may cause flash floods on small rivers and streams, landslides on steep slopes and flooding in low-lying areas. Beware of heavy rain in a short period of time causing flooding in urban areas. Warning level 1 of natural disaster risk due to tornadoes and lightning.

At sea, the Gulf of Tonkin, the northern sea area of ​​the North East Sea area has showers and thunderstorms; in thunderstorms there is a possibility of tornadoes and strong gusts of wind level 7-8, beware of wave heights sometimes increasing to over 2m. All ships operating in the above areas are at high risk of being affected by tornadoes, strong gusts of wind and big waves. On August 18-19, the area from Nghe An to Ninh Thuan will have hot weather, some places will be extremely hot with the highest temperature commonly from 35-37 degrees Celsius, some places will be over 37 degrees Celsius; the lowest relative humidity commonly is 50-55%.

The Meteorological Agency said that the heat wave in the Central region is likely to continue in the coming days. Warning level 1 for natural disaster risk due to heat wave.

Forecast for the night of August 17 and 18: In the Northwest, there will be scattered showers and thunderstorms in the evening and at night, with some places having heavy rain; during the day, there will be showers and thunderstorms in some places; during thunderstorms, there is a possibility of tornadoes, lightning and strong gusts of wind. The lowest temperature will be from 24-27 degrees Celsius, with some places below 24 degrees Celsius. The highest temperature will be from 31-34 degrees Celsius, with some places above 34 degrees Celsius.

In the Northeast and Hanoi capital, in the late afternoon and at night, there will be scattered showers and thunderstorms, locally heavy rain; in thunderstorms, there is a possibility of tornadoes, lightning and strong gusts of wind; during the day, there will be showers and thunderstorms in some places. The lowest temperature is from 25-28 degrees Celsius. The highest temperature is from 31-34 degrees Celsius, some places above 34 degrees Celsius.

In the late afternoon and evening, the provinces from Thanh Hoa to Thua Thien-Hue will have scattered showers and thunderstorms in some places. In the North, there will be scattered showers and thunderstorms, with some places having heavy rain. During thunderstorms, there is a possibility of tornadoes, lightning and strong gusts of wind. During the day, it will be hot and sunny, with some places having extremely hot weather. In Thanh Hoa, it will be sunny. Southwest wind level 2-3. The lowest temperature is from 26-29 degrees Celsius. The highest temperature is from 34-37 degrees Celsius, with some places in the South being over 37 degrees Celsius.

Provinces and cities from Da Nang to Binh Thuan in the late afternoon and at night will have showers and thunderstorms in some places; in thunderstorms there is a possibility of tornadoes, lightning and strong gusts of wind; hot and sunny days, some places are very hot, except in Binh Thuan, sunny days. Southwest wind 2-3. Lowest temperature from 25-28 degrees Celsius. Highest temperature from 34-37 degrees Celsius, some places in the North are over 37 degrees Celsius.

In the Central Highlands, there will be showers and thunderstorms in some places in the late afternoon and at night; thunderstorms may cause tornadoes, lightning and strong gusts of wind; sunny during the day. Southwest wind level 2-3. Lowest temperature from 21-24 degrees Celsius. Highest temperature from 30-33 degrees Celsius.

In the South, in the late afternoon and at night, there will be showers and thunderstorms in some places; in thunderstorms, there is a possibility of tornadoes, lightning and strong gusts of wind; sunny during the day. Southwest wind level 2-3. Lowest temperature from 24-27 degrees Celsius. Highest temperature from 32-35 degrees Celsius.