The intertropical convergence zone has its axis passing through the South Central and Southern regions, connected to the circulation of the low pressure area. Southwest monsoon in the South operates with weak to moderate intensity.
Above, from September 19, the northern branch of the subtropical high pressure tends to encroach westward. At the same time, strong wind convergence is operating in the Southern region.
According to forecasts, in the next 3-10 days, the tropical convergence zone tends to gradually strengthen, combined with upper-level wind convergence passing through the South. The Southwest monsoon is operating at an average level.
Therefore, from 7 pm on September 18 to 7 pm on September 20, Ho Chi Minh City and southern provinces and cities will 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.
Heavy rain in the Southern region is forecast to continue until the end of September 24. Specifically from 7 pm on September 20 to 7 pm on September 21, the common rainfall is about 40-80 mm, in some places over 100 mm.
The meteorological agency warns that heavy rain may cause flooding in low-lying areas, urban areas, industrial parks, riverside areas and canals.
During thunderstorms, people need to be wary of the possibility of tornadoes, lightning, hail and strong gusts of wind.
In the Lam Dong - Dong Nai area, it is necessary to prevent the risk of flooding on small rivers and streams and landslides in steep slopes.
