Xuan Anh noted that October is typically the rainy and flood-prone season in Hoi An, with storms and long downpours affecting central Vietnam. Heavy rain in the region is expected to persist through the end of the month.
Meteorological authorities have warned of high risks of flash floods and landslides in mountainous areas, and flooding in low-lying and urban zones.
The tropical depression has already brought heavy rainfall to Ha Tinh–Da Nang, with totals between 7 p.m. on Oct. 21 and 8 a.m. Oct. 22 exceeding 80 mm in many locations: Mac Khe Lake (Ha Tinh) recorded 149 mm, Truong Xuan (Quang Tri) 89 mm, and Bach Ma National Park (Hue) 108 mm.
Forecasters predict that from Oct. 22 to the night of Oct. 23, rainfall will reach 100–200 mm across Ha Tinh–Quang Ngai, with some areas exceeding 300 mm; particularly in southern Quang Tri–Da Nang, rainfall may reach 200–400 mm, locally surpassing 700 mm, with intense bursts over 150 mm within three hours.
Over the next 48–72 hours, rainfall in Ha Tinh–Quang Ngai will gradually decrease to 40–80 mm, though localized areas may still exceed 150 mm. Rain is likely to persist until the end of October, with river levels in southern Quang Tri–Da Nang potentially rising to alert levels 2–3.