At noon on September 22, according to satellite cloud images, weather radar and lightning positioning, convective clouds are developing, causing rain with thunderstorms and lightning in many areas of Ho Chi Minh City.
In the next 3 hours, convective clouds will continue to develop, causing showers, thunderstorms, lightning in wards and communes such as Cho Lon, Thanh An, Long Hoa, Tan Phuoc, Vinh Loc, Thoi Hoa, Lai Thieu, Tay Nam, Tan Nhut, Can Gio, Long Huong, Tam Long, Thanh An, Binh Gia, Phu An and Minh Thanh, then it is likely to expand to neighboring areas.
Common rainfall is 5-10 mm, in some places over 30 mm. During thunderstorms, it is necessary to watch out for tornadoes, lightning, hail and strong gusts of wind at level 5-7 (8-17 m/s). Heavy rain can cause localized flooding.
The weather pattern causing thunderstorms is due to the tropical convergence zone with its axis passing through the South Central Coast and the South being actively operating. The Southwest monsoon has a weak to moderate intensity. The convergence zone at sea tends to move towards the mainland of the South.
In the past 24 hours, Ho Chi Minh City recorded moderate rain, heavy to very heavy rain with thunderstorms at Nha Be 131.4 mm, Cat Lai 112.6 mm, Can Gio 109.8 mm...
From 1:00 PM on September 22 to 1:00 PM on September 24, Ho Chi Minh City and southern provinces and cities will continue to have moderate to heavy rain, with very heavy rain in some places. Total rainfall in 48 hours is commonly 70-150 mm, with some places over 150 mm.
From 1:00 PM on September 24 to 1:00 PM on September 25, heavy rain will continue to be maintained with rainfall of about 20-50 mm, in some places over 50 mm.
It is noteworthy that the water level at most stations on the Saigon River is rising rapidly according to the high tide of the full moon of the eighth lunar month. By September 26, the highest tide peak of the day at Phu An, Nha Be and Thu Dau Mot stations is forecast to be at alarm level II to III, in some places above alarm level III by about 0.06 m.
The meteorological agency warns that heavy rain combined with high tides may cause flooding in low-lying areas and riverside areas, affecting traffic and socio-economic activities in Ho Chi Minh City.
