From around the night of March 17, this cold air mass will affect the Northeast region; then affect the North Central region, Northwest, Central Central and some places in the South Central region.
Inland, the northeast wind will strengthen to level 3, coastal areas level 3 - 4, some places will gust to level 6.
The North and the area from Thanh Hoa to Hue will continue to be cold, with some mountainous areas in the North experiencing severe cold. Cold, severe cold, and severe cold are likely to affect livestock and poultry; growth and development of crops.
Day and night of March 17, the North and North Central regions will have the lowest temperature of about 14 - 17 degrees Celsius, in the high mountains of the North, some places will be below 10 degrees Celsius. The average temperature is about 17 - 19 degrees Celsius; some places will be below 15 degrees Celsius.
Lai Chau and Dien Bien have the lowest temperature of about 18 - 20 degrees Celsius.
The Hanoi area is cold. The lowest temperature in this cold air mass is generally 15 - 17 degrees Celsius.
From Quang Binh to Hue, the lowest temperature is about 16 - 18 degrees Celsius; the average temperature is 18 - 20 degrees Celsius.
Day and night on March 18, the North and North Central regions will have the lowest temperature of about 14 - 17 degrees Celsius, in the high mountains of the North, some places will be below 10 degrees Celsius. The average temperature is about 16 - 18 degrees Celsius; some places will be below 15 degrees Celsius.
Lai Chau and Dien Bien have the lowest temperature of about 18 - 20 degrees Celsius.
From Quang Binh to Hue, the lowest temperature is about 16 - 18 degrees Celsius; the average temperature is 18 - 20 degrees Celsius.
Regarding other notable situations, due to the influence of the strengthening cold air, the area from Ha Tinh to Khanh Hoa will have scattered showers and thunderstorms, locally moderate to heavy rain. During thunderstorms, there is a possibility of tornadoes, lightning, hail and strong gusts of wind.
Thunderstorms accompanied by tornadoes, lightning, hail and strong gusts of wind can affect agricultural production.