According to the National Center for Hydro-Meteorological Forecasting, the cold air mass is continuing to move south. The Gulf of Tonkin has northeast winds of level 4.
Around the late afternoon and evening of October 22, this cold air mass will affect the mountainous areas of the North, then affect other areas in the Northeast, North Central, some areas in the Northwest and North Central. The northeast wind will strengthen to level 3, coastal areas to level 4-5.
Northern region and Thanh Hoa have scattered showers and thunderstorms.
From the night of October 22 to October 23, the weather in the North, Thanh Hoa and Nghe An will be cool. The lowest temperature in the North is around 21 - 24 degrees Celsius, in mountainous areas it is below 20 degrees Celsius. The average temperature is around 24 - 26 degrees Celsius, in mountainous areas it is below 24 degrees Celsius.
The area from Nghe An to Binh Dinh has rain, moderate rain, locally heavy rain to very heavy rain and thunderstorms. Thunderstorms are likely to cause tornadoes, lightning, hail and strong gusts of wind.
The meteorological agency warns that thunderstorms accompanied by tornadoes, lightning, hail and strong winds can affect agricultural production, cause trees to fall, damage houses, traffic works and infrastructure.
Localized heavy rains can cause flooding in low-lying areas; flash floods in small rivers and streams, and landslides on steep slopes.
From the night of October 23, the North and Thanh Hoa will have cold nights and mornings, especially in the mountainous areas of the North. The lowest temperature in the North is generally from 19 - 21 degrees Celsius, in the mountainous areas 17 - 19 degrees Celsius, in the high mountainous areas some places drop below 16 degrees Celsius; Thanh Hoa - Nghe An the lowest temperature is generally from 20 - 23 degrees Celsius.
Regarding sea weather, in the North East Sea, the northeast wind is strong at level 6, sometimes at level 7, gusting to level 8 - 9; the sea is rough; the waves are 2.5 - 4.5m high. In the Gulf of Tonkin, the northeast wind gradually increases to level 6, sometimes at level 7, gusting to level 8 - 9; the sea is rough; the waves are 1.5 - 2.5m high.
Strong winds and large waves at sea are likely to affect boating and other activities.
