According to Lao Dong, the rain lasted until more than 10:00 p.m. on November 4, causing some roads such as Ky Dong, Nguyen Duy Trinh, Nguyen Van Khoi... to be quickly flooded.
Many sections of the road have water level rising to half a wheel, making it difficult for vehicles to move, and a series of vehicles have to move on foot. Many people have to find temporary shelter or stop to wait for the water to recede.
According to the Southern Hydrometeorological Station, satellite cloud images, weather radar and lightning positioning show that the thunderstorm area is developing, causing widespread rain with thunderstorms and lightning, covering areas such as Vung Tau, Tam Thang, Rach Dua, Phuoc Hai, Can Gio, Phuoc Thang, An Khanh, Tang Nhon Phu, Thu Duc, Saigon...
Rainfall is generally from 10 - 70 mm, in some places exceeding 90 mm. During thunderstorms, it is necessary to be on guard against tornadoes, hail and strong gusts of wind of level 5 - 7 (8 - 17 m/s), which can cause local flooding.
The cause of thunderstorms is that the continental cold high pressure mass moves to the East and gradually weakens, while the tropical convergence zone remains in the Southern region, connecting with storm Kalmaegi in the East of the Philippines. In addition, disturbances at the 500 mb level are also active.
