In the next 24-48 hours, the hot low pressure area in the West tends to weaken. The low pressure trough in the Northwest - Southeast direction passing through the South Central and Southern regions will still maintain activity.
Above, the subtropical high pressure with its axis passing through the Southern - South Central region continues to gradually weaken. In the Southern sea area, southwest winds are operating with weak to moderate intensity.
From 3-10 days, the hot low pressure area in the West is likely to develop and gradually expand eastward. The subtropical high pressure at high altitude continues to weaken, and around May 20-21, it tends to encroach westward again with its axis passing through the South Central - Southern region, then gradually raise its axis to the Central and Northern regions.
Meanwhile, the low pressure trough facing Northwest - Southeast through the South Central Coast - South will gradually weaken. Southwest winds maintain weak to moderate intensity, especially in the period from May 22-25, it will be weaker. Around May 24-25, the possibility of forming a low pressure trough through the central area of the East Sea.
Due to the influence of the above weather patterns, in the late afternoon and evening of May 20, the Southern region will have scattered showers and thunderstorms, common rainfall from 10-30 mm, locally over 50 mm. From around May 22, the thunderstorm wave tends to gradually decrease, and the heat returns.
In the next 1-2 days, the water level at most stations in the Saigon River basin will change slowly, then recede rapidly. The highest tide peak of the day is at or above alarm level I, maintained until the end of May 20.
