Risks of flash floods and landslides are warned for mountainous provinces, according to the national weather forecasting agency.
The rainfall is predicted to reach 100-150mm with over 200mm per period in several places in the Northern region and Thanh Hoa Province. During the thunderstorms there will be a possibility of tornadoes, lightening, hail and strong gusts.
In addition, flash floods, landslides and localised flooding are predicted in the mountainous provinces of Lai Chau, Son La, Hoa Binh, Ha Giang, Tuyen Quang, Cao Bang, Bac Kan, Lang Son, Thai Nguyen, Lao Cai, Yen Bai and Phu Tho.
In Hanoi, showers and thunderstorms will appear in the evening and at night until June 25.
Due to the large-scale rains, Northern provinces will see lower temperatures from June 23, with highest temperature of about 35C.
Meanwhile, central provinces from Ha Tinh to Phu Yen will continue to brave intense heat with over 38C in several places.
The heat wave in central region is forecast to continue for many days to come while hot weather is likely to reappear in the North from June 26.
