Tornadoes, lightning and strong winds are also likely to occur during the thunderstorms.
The northern region and Thanh Hoa Province will see scattered showers, with moderate to heavy localised rainfall measuring 20-40mm/24 hours, and over 60mm/24hours in some places, due to the impact of the low-pressure trough with an axis at about 21-24 degrees north latitude.
The low-lying areas in the provinces of Lai Chau, Dien Bien, Son La, Hoa Binh, Lao Cai, Yen Bai, Quang Ninh, Cao Bang, Ha Giang, Tuyen Quang, Lang Son and Bac Kan will face risks of flash floods, landslides and flooding.
In Hanoi, showers and thunderstorms will appear in the evening and night on July 30.
In addition, due to the strong influence of the southwest monsoon, the central highland and southern regions will suffer from showers and thunderstorms, with moderate to heavy localised rainfall. Tornadoes, lightning and strong winds are also likely to occur during the thunderstorms.
The central region is being faced with intense heat. (Image for illustration)
Also, according to the National Centre for Hydro-Meteorological Forecasting, the central localities will be faced with intense heat, with over 39C in several places.
People exposed to high temperature for a long time were warned of dehydration, exhaustion and heatstroke.
