According to the National Center for Hydro-Meteorological Forecasting, currently, the cold air has intensified and affected the northern part of the Central Central region. The Gulf of Tonkin has strong northeast winds of level 6, sometimes level 7, gusting to level 8.
On December 13, the cold air continued to affect other places in the Central Central region.
The North and North Central regions continue to be cold, the mountainous areas of the North are very cold, with some places experiencing severe cold.
The lowest temperature in the North and Thanh Hoa is about 11 - 14 degrees Celsius, in mountainous areas 8 - 11 degrees Celsius, some places below 7 degrees Celsius. The average temperature is about 14 - 16 degrees Celsius, in mountainous areas some places below 13 degrees Celsius.
Nghe An and Ha Tinh have the lowest temperature of about 13 - 16 degrees Celsius; average temperature of about 16 - 18 degrees Celsius.
Due to the influence of cold air combined with disturbances in the upper easterly wind zone, from December 13 to about December 15, the Central Central and South Central regions will have moderate rain, heavy rain and thunderstorms, locally very heavy rain; the North Central region will have rain, showers, locally heavy rain.
Thunderstorms may cause tornadoes, lightning and strong gusts of wind. Heavy rain may cause flooding in low-lying areas; flash floods in small rivers and streams; and landslides on steep slopes.
From the night of December 13, cold air will be strengthened and affect the South Central region. The northeast wind inland will be strong at level 3, and in coastal areas at level 4-5. Also from the night of December 13, the temperature in the North and North Central regions will decrease further.
The North and Thanh Hoa are experiencing severe cold, with severe cold in mountainous areas. The meteorological agency has warned that the cold weather could affect crops and livestock.
Hanoi area from the night of December 13th, the weather is very cold. The lowest temperature in this cold air mass is commonly 10 - 13 degrees Celsius.
During the day and night of December 14, the North and Thanh Hoa will have the lowest temperature of about 10 - 13 degrees Celsius; mountainous areas 7 - 10 degrees Celsius, some places below 6 degrees Celsius. The average temperature is about 13 - 15 degrees Celsius; mountainous areas have places below 12 degrees Celsius.
According to the temperature chart from the meteorological agency, the two days of December 14 - 15 will have the lowest temperatures in this cold spell. The lowest temperature in this cold spell in the North is generally from 10 - 13 degrees Celsius, in mountainous areas 7 - 10 degrees Celsius, in high mountainous areas below 5 degrees Celsius; in the North Central region, it is generally from 12 - 15 degrees Celsius.
At sea, on December 13, the Gulf of Tonkin has strong northeast winds of level 6, sometimes level 7, gusting to level 8 - 9; rough seas; waves 2 - 3.5m high. From the night of December 13, the northeast winds gradually increase to level 6 - 7, gusting to level 8 - 9; rough seas; waves 2 - 4.5m high.
During the day and night of December 13, the North East Sea area (including Hoang Sa archipelago) will have strong northeast winds of level 6 - 7, gusting to level 8 - 9; rough seas; waves from 3 - 6m high. The sea area from Quang Tri to Quang Ngai will have strong northeast winds of level 6, sometimes at night level 7, gusting to level 8 - 9; rough seas; waves from 3 - 5m high.
The northern sea area between the East Sea and the area from Binh Dinh to Phu Yen has strong northeast winds of level 6, gusting to level 7-8; rough seas, waves 2-4m high.
Strong winds and large waves at sea are likely to affect boating and other activities.
