From tonight to tomorrow (July 4), areas in the province will have moderate rain, some places will have heavy rain to very heavy rain and thunderstorms. Rainfall is generally 10 - 30mm/period, some places over 50mm/period. During thunderstorms, there is a possibility of tornadoes, lightning, hail and strong gusts of wind. Heavy rain is concentrated in Sa Pa town and the districts of Bao Yen, Bao Thang, Bac Ha, Van Ban, Muong Khuong, and Simacai.