According to the National Center for Hydro-Meteorological Forecasting, the weather forecast for June 21 is cloudy in the Northwestern provinces, with moderate rain, heavy rain and scattered thunderstorms, locally very heavy rain. Light wind. During thunderstorms, there is a possibility of tornadoes, lightning, hail and strong gusts of wind.
Lowest temperature from: 24-27 degrees Celsius, some places below 23 degrees Celsius. Highest temperature from: 30-33 degrees Celsius.
In Son La province, due to the influence of the southern edge of the low pressure trough with an axis at about 24-27 degrees North latitude connecting with the low pressure area in the West, it was compressed and pushed south, combined with a wind convergence of up to 5,000m to gradually strengthen. Cloudy forecast, moderate rain, heavy rain, some places with very heavy rain and thunderstorms (heavy rain concentrated from evening to morning). During thunderstorms, there is a possibility of tornadoes, lightning, hail and strong gusts of wind. Temperature from 22-25 degrees Celsius.
In Dien Bien province, it is forecasted to be cloudy, with rain, moderate rain, locally heavy rain, very heavy rain and thunderstorms, with the possibility of tornadoes, lightning and strong gusts of wind. Temperature from 22-29 degrees Celsius, high mountainous areas from 18-22 degrees Celsius.
In Lao Cai province, due to the influence of the southern edge of the low pressure trough with an axis at about 25-28 degrees North latitude connecting to the low pressure area in the West, combined with a wind convergence of up to 5,000m. Cloudy forecast, scattered showers and thunderstorms, some places have moderate to heavy rain. The highlands will have cold nights and mornings, and some places will be cold. Temperature from 25-27 degrees Celsius.
In Hoa Binh, Yen Bai, Lai Chau provinces, it is forecasted to be cloudy, with moderate rain, heavy rain and scattered thunderstorms, locally very heavy rain. Light wind. During thunderstorms, there is a possibility of tornadoes, lightning, hail and strong gusts of wind. Temperature from 22-30 degrees Celsius.