Record Rainfall in Southern and South Central Vietnam Due to Intensified Tropical Convergence Zone

Heavy rainfall has been observed across a wide area in central and southern Vietnam on September 21st. According to the National Center for Hydro-Meteorological Forecasting, rainfall has increased, particularly in the South Central and Southern regions, due to the intensified activity of a tropical convergence zone. From the evening of September 20th to the morning of September 21st, moderate rain and thunderstorms occurred from Hue City to Da Nang City, eastern Quang Ngai Province, southern regions, and Lam Dong Province, with rainfall ranging from 20-40mm, and exceeding 80mm in some areas. Additionally, areas from Ha Tinh to Quang Tri, other parts of the South Central coast, and the Central Highlands experienced scattered showers and thunderstorms with rainfall of 10-30mm, and over 60mm in some locations. Furthermore, from the afternoon of September 21st to September 22nd, moderate to heavy rain and thunderstorms are forecast for eastern Gia Lai Province, Dak Lak Province, Khanh Hoa Province, Lam Dong Province, and southern regions. Rainfall is expected to be between 40-100mm, with potential for over 150mm in some places. The possibility of intense rainfall exceeding 100mm per hour has been warned. In the northern regions, Thanh Hoa, and Nghe An, there will be sunny spells, but showers and thunderstorms are expected at night. At sea, the presence of the tropical convergence zone extending from the South Central to the Southern regions will cause showers and thunderstorms in the waters from southern Quang Tri to Ca Mau, Ca Mau to An Giang, the Gulf of Thailand, the southwestern part of the North East Sea (including the Paracel Islands), and the central and southern parts of the East Sea (including the Spratly Islands). These maritime areas face an increased risk of lightning, strong gusts (level 7-8), and waves exceeding 2 meters. All vessels operating in these areas are at risk from whirlwinds and strong gusts, requiring careful navigation. In Hanoi, daytime will see some sunny spells, with the lowest temperature at 24-26°C and the highest at 32-34°C. Western North Vietnam will be cloudy with sunny days. The lowest temperature will be 21-25°C, and the highest will be 31-34°C. Eastern North Vietnam will be cloudy with sunny days. The lowest temperature will be 22-26°C, and the highest will be 31-34°C. Thanh Hoa to Hue: The northern part will be sunny during the day; the southern part will experience moderate rain and thunderstorms, with some areas receiving heavy to very heavy rain. The lowest temperature will be 23-26°C, and the highest will be 30-33°C. South Central Coast: Cloudy with moderate rain, and heavy to very heavy rain in some areas. The lowest temperature will be 23-26°C, and the highest will be 29-32°C. Central Highlands: Cloudy with showers, and heavy to very heavy rain in some areas. The lowest temperature will be 20-23°C, and the highest will be 27-30°C. Southern Vietnam: Cloudy with moderate rain and thunderstorms, and heavy to very heavy rain in some areas. The lowest temperature will be 23-26°C, and the highest will be 29-32°C. Ho Chi Minh City: Cloudy with moderate rain and thunderstorms, and heavy to very heavy rain in some areas. The lowest temperature will be 24-26°C, and the highest will be 31-33°C.