Weather forecast for the next 24-48 hours, the low pressure trough connecting with the hot low pressure area in the West will be compressed and gradually move down to the mountainous and midland areas of the North, then gradually weaken.
Above, the subtropical high pressure with an axis through the Central region is stable. The south of the equatorial low pressure trough has an axis at about 5-8 degrees North latitude. The high-altitude East wind convergence will continue in the Southern region.
Weather forecast for the next 3 days, forming a low pressure trough with an axis at about 25-28 degrees North latitude, from around 22/5 the low pressure trough will be compressed and pushed to the South.
In the South, the equatorial low pressure trough with an axis at about 4-7 degrees North latitude will gradually lift its axis to the North, from around May 21-22, the Southwest wind is likely to operate again.
Above, the subtropical high pressure will be stable, from around May 21 it will weaken and gradually withdraw to the East.
Therefore, from now until May 20, the probability of rain in the Southern region is 60-70%. After that, the probability of rain will gradually increase. Thunderstorms tend to appear more often and more frequently in the afternoon and evening, with moderate and heavy rain.