On the afternoon of October 18, combined with monitoring on satellite cloud images, lightning location data and weather radar images, it was shown that convective clouds still existed in the areas of Dong Nai, Binh Phuoc, Tay Ninh, Binh Duong, Ba Ria - Vung Tau, Ben Tre, Ho Chi Minh City...
From now until the next 4 hours, these convective clouds will cause showers and thunderstorms in the above mentioned area, then continue to expand and cause rain in neighboring provinces. During the thunderstorms, there is a possibility of tornadoes, lightning, hail and strong gusts of wind.
The thunderstorms are caused by the weakening of the continental cold high pressure. The equatorial low pressure trough has an axis through the Southern - South Central region. The high-altitude easterly wind disturbance has a positive impact on the weather in the South.
In the past 12 hours, the water level at the stations downstream of the Saigon - Dong Nai river system continued to follow the high tide of September 15 (Lunar calendar) and remained high. The water level at the stations downstream of the Saigon - Dong Nai river will likely rise slowly for the next 1-2 days, then fall again.
At Phu An and Nha Be stations, it can reach 1.75-1.80m (0.15-0.20m above alarm level III); Occurrence time is from 4-6am and 4-6pm. At Thu Dau Mot station (Sai Gon river), it can reach 1.85-1.90m (0.25-0.30m above alarm level III). At Bien Hoa station (Dong Nai river), it can reach 2.10-2.15m (0.10-0.15m above alarm level II).
The level of natural disaster risk in the downstream area of Saigon - Dong Nai River is at level 2.
Weather forecast for the next 24-48 hours, continental cold high pressure will be strengthened in the North of our country. The equatorial low pressure trough has an axis through the South with little change in intensity. The subtropical high pressure has an axis through the North Central region.
From 72 hours to the 10th day, the continental cold high pressure continued to strengthen in the North of our country, then around October 22-23 and from October 26-27 it was further strengthened.
The equatorial low pressure trough has an axis across the Southern region, from around October 23-24 it will gradually become stronger. Above, the subtropical high pressure trough has an axis across the North Central - Northern regions, operating stably, then weakening and retreating to the East around October 24-25.
Therefore, the Southern region continues to have rain, moderate rain and scattered thunderstorms, locally heavy to very heavy rain.
