[REVISION HISTORY]

Vietnam weather: Tropical depression and extreme rainfall

Updated 29 times since CLSTR started tracking revisions of this situation.

What changed

2026-09-12 14:45 UTC → 2026-09-14 02:26 UTC · added ~~removed~~

Weather patterns in Vietnam continue to show significant regional divergence. By early September, the North transitioned toward pleasant autumn weather, though a cold air mass moving south has begun impacting the region. As of September 8, temperatures in Northern Vietnam are dropping, with nighttime lows in mountain areas potentially falling below 19 degrees Celsius. This cold air has triggered widespread rain and thunderstorms, including heavy rainfall in Hanoi that has caused localized urban flooding. Central Vietnam is facing increasingly severe weather as a The tropical depression ~~moves northwest~~ moving toward the coast between Ha Tinh and ~~Hue. The National Center for Hydro-Meteorological Forecasting warns that rainfall could exceed 800mm in some areas between~~ Hue has intensified weather risks across Vietnam. By September ~~11 and 14, specifically targeting Ha Tinh, Hue, Quang Tri, and Da Nang. In Quang Tri, heavy rains have already led to flooding and~~ 11, the ~~temporary isolation~~ system maintained maximum sustained winds of ~~mountainous areas due to submerged bridges and roads.~~ level 6 with gusts reaching level 8. In ~~Huế, heavy~~ Quang Tri, rainfall ~~has triggered widespread landslides, including approximately 2,000 cubic meters of earth and rock blocking National Highway 49 and the Ho Chi Minh Highway. Soil moisture levels~~ in ~~several~~ some areas ~~have reached or~~ exceeded ~~80% saturation, increasing~~ 480mm, leading to the ~~risk~~ relocation of ~~geological instability. Maritime incidents have~~ 59 households in Lao Bao commune. Fast-flowing floodwaters on the O Lau River also ~~been reported: a fishing vessel sank~~ swept away two barges belonging to the QT Nguyen Hoang Construction Materials Exploitation Company, leaving them stuck at ~~Thuận An port, and~~ the ~~24,000-ton cargo ship Star City ran aground in~~ My Chanh railway bridge. As of September 13, the ~~Chân Mây - Lăng Cô sea area. In~~ depression has weakened into a low-pressure area over western Quang Tri and is expected to move toward central Laos. However, its circulation and the ~~South,~~ intertropical convergence zone continue to trigger widespread heavy ~~rains have caused~~ rainfall. Forecasts indicate intense precipitation through September 16, with some regions expected to receive over 500mm of rain. In Northern Vietnam, including Hanoi, significant ~~traffic congestion and flooding in parts~~ rainfall is anticipated alongside a temperature drop of ~~Ho Chi Minh City, while the Dong Nai River has exceeded~~ 3-4 degrees Celsius. In Central Vietnam, from Thanh Hoa to Hue, heavy rain maintains a high risk of flash floods and landslides, with rivers potentially rising to alarm ~~level 2, prompting flood~~ levels BĐ1 through BĐ3. Authorities have issued warnings ~~for low-lying areas in Đồng Nai.~~ regarding potential lightning, hail, and strong wind gusts.

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