Tropical storm Wutip lashed central Vietnam after sinking at least two Chinese fishing boats near the Paracel Islands, leaving 75 fishermen missing, officials said.
The storm uprooted trees, cut power lines and damaged more than 1,000 houses. There was no immediate word of injuries, flooding or major structural damage.
Vietnam's national weather center said Wutip had weakened from a typhoon to a tropical storm by the time it made landfall. It was packing sustained winds of 117 kilometres per hour, it said.
Officials evacuated tens of thousands of people from the storm's path over the previous day.
Schools in five central provinces closed and the coast guard told 61,000 fishing boats with 303,000 crew members to take shelter.