Vietnamese authorities said 37 people have died from floods and landslides caused by heavy rain.
Another 40 are missing, and thousands have been evacuated from their homes, as a tropical depression sweeps across northern and central Vietnam.
The latest bout began on Monday, and weather officials have warned that the tropical depression may intensify into a more powerful storm in coming days.
The death toll was one of the highest ever recorded in the country that was caused by flooding, Reuters reported Vietnam’s disaster prevention agency as saying.
Officials said at least 16,000 homes have been submerged.
Meanwhile 18 people were buried in an overnight landslide in Hoa Binh, with most of them still missing by Thursday.
Hundreds of soldiers have been deployed for rescue efforts. A disaster agency official told AFP news agency that they were “mobilising all forces to search for the missing”.