A low-pressure trough connecting with the low-hot pressure zone from the west, the intensify of the southwest monsoon and the newly-formed storm Choi-Wan in the southwest of the Philippines' Luzon Island have resulted in thundery showers in the sea and mainland of Vietnam.
Dangerous weather conditions like downpour, whirlwind and thunderstorms have caused human and property damage in the Southern provinces and cities in recent days, reported the National Center for Hydrology Meteorology Forecasting.
The wave of unseasonal thunderstorms and downpours is expected to hit the Southern region in the next 24 hours due to an impact of the strong high-cold pressure system in addition to the upper-east wind turbulence zone, updated the National Center for Hydrology Meteorology Forecasting.
Many cities in the Southern region will suffer from extreme harmful ultraviolet (UV) radiation in a range of red- color zone in the next three days, according to the National Center for Hydro-meteorology Forecasting.
A tropical depression is impacting on the operation of southwest monsoon in the Southern region and the southern part of the East Sea although the dangerous system formed in the middle of the East Sea.
The National Hydrology Meteorology Forecast Center warned that four highest flood-tide-hit Southern coastal region would be able to fall on September 18- 21, on October 15-19, on November 14-18 and on December 13-17 respectively.
The National Hydrology Meteorology Forecast Center predicted the gradual reduction of temperature and rainy, wintry days in the Southern and Central Highlands regions from May 15 following prolonged heat waves.
The National Hydrology Meteorology Forecast Center yesterday issued a new weather forecast of torrential rain, hail, lightning and thunderstorm after prolonged roasting days through the Southern region.