Six people have been killed, seven injured and 18 others remained missing in the flooding triggered by Typhoon Son Tinh in the northern mountainous province of Yen Bai, according to local authorities.

Downpour triggered by Typhoon Son Tinh has caused serious flooding in Yen Bai Province on July 20. Photo by Yen Bai Newspaper

The figures was announced in a report released Friday by the Yen Bai Provincial People's Committee which also said 346 houses had been damaged and 585 households evacuated as of July 20 evening.

Flooding in Yen Bai City. Photo by Transport Newspaper

Downpour and flooding triggered by Typhoon Son Tinh have also ravaged many other areas in the northern and central regions.

Son Tinh storm, the third occurring in the East Sea so far this year, directly devastated provinces from Thai Binh to Quang Binh from July 17-19. Water levels rose in the Red River, Thai Binh River, and Hoang Long River, along with other rivers from Thanh Hoa to Quang Binh provinces, causing widespread floods.

Leaders of some mountainous localities of Nghe An Province, which are at high risk of flashfloods and landslides, have rolled out response measures and warned locals.

As of July 19, the storm destroyed 1,000ha of farm land and industrial crops; 60ha of forest; 15,000 tonnes of salt; and 922 hectares of aquatic farms; while also damaging five schools in Nghe An, the Vietnam News Agency reported.

According to Director of the National Centre for Hydro-meteorological Forecasting Hoang Duc Cuong, heavy rains will continue covering the northern and northern central regions until July 21. From July 23, extremely heavy rains are forecast in the northeastern region, mostly in Quang Ninh and Lang Son, which will then spread to the whole northern region from July 24-27.