On the afternoon of September 26, thunderstorms are developing and causing rain, thunderstorms, and lightning in Binh Chanh and Nha Be areas. In addition, thunderstorms in Dong Nai province are also moving towards Ho Chi Minh City.
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 such as Nha Be, Can Gio, District 7, District 8.
Rainfall is generally from 2-10mm, some places over 10mm. During thunderstorms, beware of tornadoes, hail and strong gusts of wind around level 5-7 (8-17m/s), heavy rain causing localized flooding.
According to the Southern Hydrometeorological Station, the situation causing thunderstorms in Ho Chi Minh City is the continental high pressure weakening and moving to the East. The wind is weak over the Southern sea. Above, the subtropical high pressure encroaches on the West with an axis crossing the Central region. The high-altitude East wind disturbance exists over the South East Sea moving to the West.
In the next 24-48 hours, the low pressure trough with axis 5-9 degrees North latitude will be weak. Winds will change direction with weak intensity over the Southern sea areas. Above, the subtropical high pressure will encroach on the West, the axis through the North Central region.
From 72 hours to the 10th day, the low pressure trough with an axis of 5-9 degrees North latitude gradually faded, and around September 29, a new low pressure trough with an axis through the Central region connected to the tropical cyclone in the Northeast of the Philippines.
From October 1, the continental cold high pressure will strengthen to the North of our country, compressing and pushing the low pressure trough to gradually move southward through the South Central region. The wind will change direction and become weak over the southern seas. Above, the subtropical high pressure will continue to encroach on the West, gradually weakening from September 29-30.
Therefore, the weather in the Southern region is sunny during the day, with thunderstorms in the evening and at night. From October 1, the rain will increase. Thunderstorms are likely to cause tornadoes, lightning and strong gusts of wind. Beware of the possibility of heavy rain causing localized flooding in low-lying areas and areas with poor drainage capacity.
