On the afternoon of May 17, through monitoring satellite cloud images, weather radar images, and lightning positioning, thunderstorms are developing, causing showers and thunderstorms in the provinces of Soc Trang, Tra Vinh, Kien Giang, An Giang, Ba Ria - Vung Tau, Dong Nai, etc.
In the coming hours, thunderstorms will continue to develop and cause showers and thunderstorms in the above areas, then thunderstorms will tend to expand and spread to other neighboring areas.
Rainfall is generally from 2-10 mm, in some places over 15 mm. During thunderstorms, beware of tornadoes, lightning, hail, strong gusts of wind of level 5-8 (8-21 m/s), heavy rain causing local flooding.
Weather forecast for the next 24-48 hours, the low pressure trough connecting with the hot low pressure area in the West will continue to operate and will have an axis at about 24-27 degrees North latitude combined with high-altitude wind convergence in the Northern region.
Above, the subtropical high pressure with an axis through the Central region is stable. The equatorial low pressure trough has an axis at about 6-8 degrees North latitude. The high-altitude East wind convergence will continue in the Southern region.
Weather forecast for the next 3 days, the equatorial low pressure trough with an axis of about 6-8 degrees North latitude will continue to move to the North and gradually become stronger. From May 23 onwards, a low trough with a Northwest - Southeast axis will form through the Central Central region connecting with a low-pressure disturbance area forming in the Southeast of the East Sea.
Low pressure grooves connected to the western low pressure area with axis of 25-28 degrees North latitude grow and expand to the southeast. The Southwest wind in the Southern region from May 21 and operated strongly. Above high, subtropical high pressure through the central operating weakly draws to the east.
Therefore, the weather in the South will have more and more thunderstorms in the afternoon and evening, with some places having moderate to heavy rain. From May 19-20, the rain will increase significantly in both area and volume.
