Thunderstorms appeared in many areas, some places with very heavy rain.

The North Central region has scattered showers and thunderstorms, with localized heavy rain of 20-40mm, with some places over 70mm. In addition, in the afternoon and evening of May 15, the Central Highlands and the South will have scattered showers and thunderstorms, with localized heavy rain of 15-30mm, with some places over 70mm.

Warning, from May 17, thunderstorms in the Central Highlands and the South are likely to continue, with rain concentrated in the afternoon and evening. The risk of natural disasters due to heavy rain, tornadoes, lightning, and hail is level 1.

People need to be on guard against the risk of flash floods and landslides in mountainous areas and flooding in low-lying areas; heavy rain in a short period of time causing flooding in urban areas; thunderstorms may cause tornadoes, lightning, hail and strong gusts of wind.

Weather forecast for regions across the country on the day and night of May 15: The Northwest region will be cloudy, sunny during the day; moderate rain, heavy rain and thunderstorms in the evening and at night, some places will have very heavy rain; light wind; in thunderstorms there is a possibility of tornadoes, lightning, hail and strong gusts of wind. The lowest temperature is 22-25 degrees Celsius, in the Northwest region, some places will be below 21 degrees Celsius. The highest temperature is 28-31 degrees Celsius, some places will be above 31 degrees Celsius.

In the Northeast, there will be clouds, showers and thunderstorms in some places; in the evening and at night, there will be moderate rain, heavy rain and thunderstorms, some places will have very heavy rain; light wind; in thunderstorms, there is a possibility of tornadoes, lightning, hail and strong gusts of wind. The lowest temperature is 23-26 degrees Celsius, in mountainous areas, some places will be below 23 degrees Celsius. The highest temperature is 28-31 degrees Celsius, some places will be above 31 degrees Celsius.

Hanoi capital is cloudy, with showers and thunderstorms in some places; in the evening and at night there will be moderate rain, heavy rain and thunderstorms, some places will have very heavy rain; light wind; in thunderstorms there is a possibility of tornadoes, lightning, hail and strong gusts of wind. Lowest temperature 24-26 degrees Celsius. Highest temperature 29-31 degrees Celsius.

Provinces from Thanh Hoa to Thua Thien - Hue have clouds, scattered showers and thunderstorms; scattered showers and thunderstorms in the evening and at night, locally heavy rain; light wind; thunderstorms are likely to have tornadoes, lightning, hail and strong gusts. Lowest temperature 24-27 degrees Celsius. Highest temperature 30-33 degrees Celsius.

From Da Nang to Binh Thuan, it is cloudy, sunny during the day, some places have hot sun; in the afternoon there are scattered showers and thunderstorms, at night there are showers and thunderstorms in some places. East to Southeast wind level 2-3; in thunderstorms there is a possibility of tornadoes, lightning, hail and strong gusts of wind. Lowest temperature 25-28 degrees Celsius. Highest temperature 31-34 degrees Celsius, some places over 35 degrees Celsius.

The Central Highlands region is cloudy, sunny during the day, some places have hot sun; in the late afternoon and evening there are showers and scattered thunderstorms, locally there is moderate rain, heavy rain, then there are showers in some places; light wind; in thunderstorms there is a possibility of tornadoes, lightning, hail and strong gusts. The lowest temperature is 22-25 degrees Celsius, some places below 22 degrees Celsius. The highest temperature is 31-34 degrees Celsius, some places above 35 degrees Celsius.

The South is cloudy, sunny during the day, especially the East is hot; in the late afternoon and evening there will be showers and scattered thunderstorms, locally with moderate to heavy rain, then showers in some places; light wind; in thunderstorms there is a possibility of tornadoes, lightning, hail and strong gusts of wind. The lowest temperature is 25-28 degrees Celsius. The highest temperature is 33-36 degrees Celsius, some places above 36 degrees Celsius.