In the afternoon of May 31, through monitoring satellite cloud images, weather radar images and lightning positioning data, it was shown that thunderstorm cloud areas are developing strongly, causing showers with thunderstorms and lightning in many areas of Can Tho City, An Giang, Dong Thap, Tay Ninh, Dong Nai, Lam Dong and Ho Chi Minh City provinces.
Warning in the next 0-3 hours, thunderstorms will continue to develop and cause showers with thunderstorms and lightning in the above-mentioned areas, then tend to expand and spread to neighboring localities. Common rainfall is from 8-40 mm, in some places over 50 mm.
Weather pattern forecast for the next 24-48 hours, a low pressure trough with its axis passing through the South Central region is active, then tends to move slowly to the North. Southwest monsoon is active with average intensity over the South. Above, the subtropical high pressure with its axis through the North maintains a relatively stable state.
Weather pattern forecast from 3-10 days, the low pressure trough through the South Central region continues to raise its axis to the North and then gradually weakens. Southwest monsoon maintains medium intensity. Above, the subtropical high pressure weakens and moves to the East; around June 4-5, it is likely to encroach westward again with the axis passing through the Southern region.
Therefore, from 1:00 PM on May 31st to 1:00 PM on June 2nd, Ho Chi Minh City and southern provinces and cities are likely to experience moderate rain, heavy rain and widespread thunderstorms. Total rainfall is commonly from 90-150 mm, with some places over 150 mm.
From June 3rd, heavy rain tends to gradually decrease. Total rainfall during the day is commonly from 15-30 mm, with some places over 50 mm.