On the afternoon of May 15, in Ho Chi Minh City, thunderstorms are developing and causing rain with thunderstorms and lightning in Nha Be district, District 7, Thu Duc city, Binh Chanh, Hoc Mon district, District 12.
In the next 0 - 3 hours, thunderstorms will continue to develop, causing showers, accompanied by thunderstorms and lightning in the above districts, then expanding to other neighboring areas.
Rainfall is generally from 6-30 mm, in some places over 39 mm. During thunderstorms, beware of tornadoes, lightning, hail and strong gusts of wind of about level 5-7 (8-17 m/s), heavy rain causing local flooding.
The thunderstorms are caused by the high-altitude low pressure trough with the Northwest - Southeast axis through the South Central and South East Sea. Above, the subtropical high pressure will retreat to the East.
Weather forecast for the next 24-48 hours, the low pressure trough with an axis of about 24-27 degrees North latitude connecting with the hot low pressure area in the West will be compressed to the South. Above, the subtropical high pressure axis through the Central region will remain.
Weather forecast for the next 3 days, the low pressure trough connecting with the hot low pressure area in the West with an axis at about 24-27 degrees North latitude will gradually weaken.
From around May 19, the hot low pressure area in the West will develop and gradually expand to the East. The equatorial low pressure trough will gradually lift its axis to the North, from around May 19 it will be positioned across the South.
From May 20, the southwest monsoon tends to become more active. Above, the subtropical high pressure will remain, then from May 19 it will weaken and gradually withdraw to the East.
Therefore, the weather in the South has more frequent thunderstorms in the afternoon and evening, with moderate rain, heavy rain and thunderstorms, so beware of thunderstorms, tornadoes, hail and strong gusts of wind.
