According to the National Center for Hydro-Meteorological Forecasting, currently, the cold air mass is moving southward. The North has rain in some places, the lowest temperature is commonly 17 - 20 degrees Celsius.
Around nearly morning and January 31, this cold air mass will affect the Northeast region, then affect the North Central region, the Northwest region and the Central Central region.
From near dawn and January 31, on land, the wind will turn northeast at level 2-3, coastal areas at level 3-4.
On the night of January 30 and January 31, there will be rain and scattered light rain in the North and North Central regions.
The Northeast region from January 31st will turn cold, mountainous areas will have places with deep cold. From the night of January 31st, the North Central and Northwest regions (except Dien Bien and Lai Chau) will turn cold. Cold weather may affect livestock and poultry; affecting the growth and development of crops.
On January 31st day and night, the Northeast region and Thanh Hoa have the lowest common temperature of 14 - 17 degrees C, mountainous areas have places below 13 degrees C. The average common temperature is 17 - 19 degrees C.
The lowest temperature in this cold air wave in the Northern and North Central regions is commonly 12 - 15 degrees C, the Northern mountainous region 9 - 12 degrees C, the high mountainous region has places below 8 degrees C.
Hanoi area on the night of January 30 and January 31 has rain, scattered light rain; from January 31 it will turn cold. The lowest temperature in this cold air wave is commonly 13-15 degrees Celsius.
The area from Quang Tri to Da Nang city and the eastern provinces from Quang Ngai to Gia Lai will have rain, showers, locally moderate rain, heavy rain and thunderstorms from February 1st to the night of February 3rd due to the influence of cold air. In thunderstorms, there is a possibility of tornadoes and strong gusts of wind.
Localized heavy rain is likely to cause flooding in low-lying areas; flash floods on small rivers and streams, landslides on slopes. Heavy rain in a short period of time causes flooding in urban areas and industrial parks.
