Vietnam’s National Center for Hydro-Meteorological Forecasting (NCHMF) issued an urgent flood bulletin (TIN LŨ KHẨN CẤP) around 21:00 on 2 November 2026: the Bo and Huong rivers (Hue city) and the Vu Gia–Thu Bon system (Da Nang area) are rising. The next bulletin is scheduled around 03:30 on 3 November. Natural-disaster risk due to flood is listed at level 3 (cấp 3). This is a new 2–5 November flood wave after late-October rain — separate from our earlier 27–29 October heavy-rain alert.
What the next 12–24 hours look like
- Next 12 hours: Huong and Bo keep rising above alarm level BD3; Vu Gia rises at BD3; Thu Bon rises but stays below BD3
- Next 12–24 hours: Huong, Bo and Vu Gia continue rising above BD3
- 2–5 November: rivers in Ha Tinh, Quang Tri and Quang Ngai may rise again; peaks on several rivers may reach BD2–BD3
- Risk: flooding in low-lying riverside / urban areas from Ha Tinh to Quang Ngai; elevated flash-flood and landslide risk on slopes in that belt
Practical tips for Hong Kong travellers
- Hoi An Old Town: autumn river rises often wet low streets; skip night lantern boats and riverside walks if water is up, and don’t wade (sewage, debris, cables).
- Hue riverside / Citadel fringes: Huong-side low ground is most exposed; follow operators and hotels if buses or private cars re-route.
- Da Nang: the city base usually stays usable, but beaches and outdoor spots such as Ba Na Hills may pause in strong weather or high water — keep malls and museums as backups.
- Flights & transfers: Hong Kong–Da Nang (HKG–DAD) may still operate with delays; pad airport–hotel transfers when roads slow.
- Stay flexible: prefer free-cancellation stays and activities; you needn’t cancel the whole trip, but don’t force outdoor peaks or flooded stretches.
- Northern note: NCHMF also flagged flash-flood/landslide warnings for Tuyen Quang and Dien Bien/Lai Chau/Lao Cai on 2 Nov — relevant if you’re on Ha Giang / Sapa loops; this post stays focused on the central coast.
Related pages
See Da Nang, Hoi An and Hue, plus transport & visas. For the earlier rain watch, see Central Vietnam heavy rain alert (27–29 Oct).
This post is an original summary, not a full reprint of forecast or press copy. Levels are from the bulletin — treat local authorities and on-the-ground conditions as the source of truth.