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Northern Vietnam Braces for Early Winter Cold Front, Heavy Rains, and Thunderstorms
Northern Vietnam, particularly Hanoi, experienced heavy rains and thunderstorms as an early winter cold front approached. Meteorological authorities have indicated that these unusual weather patterns signal a seasonal transition and are expected to persist for several days.
On the afternoon of September 9, strong convective clouds formed and developed in the central areas of Northern Vietnam, including Hanoi, bringing heavy rain and thunderstorms. This weather phenomenon is also a sign of an early winter cold front approaching the country's northern border. According to the National Center for Hydro-Meteorological Forecasting, satellite imagery, lightning detection data, and weather radar observations indicate that convective clouds are actively developing and expanding in districts such as Bach Mai, Phuong Liet, Tuong Mai, and Tam Hung in Hanoi. The cloud mass is showing a trend of continued development and further expansion. From around 3:30 PM on September 9, these areas began to experience heavy rains accompanied by thunderstorms, which subsequently spread to other districts like Dong Da, Tay Ho, and Ba Dinh. Data from the Hanoi Sewerage Company reveals that some stations recorded rainfall of 40-60mm, including Hoan Kiem and Truc Bach. Notably, Dong Anh district received 90mm of rain, and Gia Lam district recorded 77mm. Beyond Hanoi, scattered thunderstorms were also observed in some other parts of the Northern region. A leader from the National Center for Hydro-Meteorological Forecasting stated that the thunderstorms in Hanoi were caused by weather disturbances and not yet by the influence of the cold front. The meteorological agency forecasts moderate to heavy rainfall with thunderstorms in the Central Highlands and Southern regions from the afternoon of September 9 to the evening, with amounts ranging from 20-40mm, and locally exceeding 100mm. Coastal areas from Hue to Da Nang, and the eastern parts of provinces from Quang Ngai to Khanh Hoa, are expected to receive scattered showers and thunderstorms with rainfall of 15-30mm, and locally over 80mm. From the afternoon of September 9 to September 10, the Northern region is predicted to have scattered showers and thunderstorms, with rainfall between 10-30mm, and locally exceeding 70mm. These thunderstorms may bring whirlwinds, lightning, hail, and strong gusts. From the night of September 11 to September 12, areas from southern Nghe An to Da Nang will continue to experience moderate to heavy rainfall and thunderstorms, with widespread amounts of 30-70mm, and locally very heavy rainfall exceeding 120mm. The heavy rainfall in the Central region is likely to persist and develop in a complex manner. Regarding the cold front, it is forecast to affect the northeastern mountainous areas of the North from early morning of September 10, and then extend to other areas of the North and North Central regions. From September 10, the northeastern and North Central regions will experience cooler weather, with minimum temperatures generally ranging from 21-24°C, and below 19°C in some high mountainous areas of the North. In Hanoi, rain and thunderstorms are expected from the night of September 9 to September 10, with cooler weather beginning on September 10. Furthermore, on the morning of September 9, a tropical convergence zone and a low-pressure area formed in the central East Sea. It is predicted that this low-pressure area may strengthen into a tropical depression and subsequently a typhoon in the coming days. Source: The Saigon Times
Original source
The Saigon Times