According to the National Center for Hydro-Meteorological Forecasting, cold air has currently affected some places in the northern mountainous areas of the North.
In the afternoon and night of May 24, this cold air mass will affect other places in the Northeast.
From May 25, the cold air will be strengthened, affecting the North Central region and some places in the Northwest. On land, the wind will shift to the northeast level 2 - 3, coastal areas level 3.
The Northern region from May 24 to 25, is forecast to be cool. The lowest temperature in this cold air mass in the North is generally from 20 - 23 degrees Celsius, in high mountainous areas it is below 20 degrees Celsius. The average temperature is about 24 - 26 degrees Celsius.
The Hanoi area is cool. The lowest temperature in this cold air mass is generally 21-23 degrees.
Regarding another notable phenomenon, due to the influence of cold air compressing the low pressure trough, on May 24, the midlands, plains and coastal areas of the North, South Son La, and Hoa Binh will have moderate rain, heavy rain and thunderstorms, locally very heavy rain.
Day and night on May 24, the North Central region will have moderate rain, heavy rain and thunderstorms, locally very heavy rain.
Thunderstorms accompanied by tornadoes, lightning, hail and strong gusts of wind can affect agricultural production, break trees, damage houses, traffic works and infrastructure.
Heavy rain is likely to cause flooding in low-lying areas; flash floods on small rivers and streams, landslides on steep slopes; heavy rain in a short period of time causing flooding in urban areas and industrial parks.
Regarding the sea weather, the North of the Gulf of Tonkin, the North of the North East Sea will have strong northeast winds of level 4 - 5. From May 25, the northeast wind will strengthen to level 5, sometimes level 6, gusting to level 7, rough seas; waves 1.5 - 2.5m high.
Strong winds and gusts, large waves at sea are likely to affect the operation of ships and other activities.
