Nari, packing winds of up to 150kph, battered central provinces on the morning of October 15, bringing heavy rains and triggering high waves.
The eye of the storm is now heading into Danang and Quang Nam provinces, according to meteorologists.
Initial reports show the storm brought down trees, pelt off roofs and broke windows of high-rise buildings.
No casualties have been reported.
In Danang, local residents spent a sleepless night in darkness to reinforce their houses and public works.
Minister of Agriculture and Rural Development Cao Duc Phat also stayed awake the whole night, directing storm prevention work.
Phat warned local people should stay indoors to avoid unexpected injuries.
Thousands of soldiers, rescue workers and militiamen were mobilised to evacuate more than 33,000 households from high-risk areas on the evening of October 14.
Vietnam Airlines decided to cancel 14 flights from HCM City, Hanoi and Haiphong to Danang and Hue on October 14-15, leaving more than 2,000 passengers stranded.
VOV
