According to the National Center for Hydro-Meteorological Forecasting, currently, the cold air mass is still compressing and pushing a low pressure trough with its axis at about 25 - 27 degrees north latitude to move south. In the North, there are showers and thunderstorms in some places, especially in the Northwest region, there are scattered showers and thunderstorms, locally heavy rain, common temperature 29 - 32 degrees C.
Around noon and afternoon May 3rd, this cold air mass will affect the mountainous area and the Northeast of the Northern region, then affect other places in the Northeast and North Central regions, some places in the Northwest and Central Central regions. On land, the wind will turn northeast at level 2-3, coastal areas at level 3-4.
The Northeast and North Central regions from the afternoon and night of May 3rd will turn cool. The lowest temperature in this cold air wave in the Northeast region is commonly from 20 - 23 degrees C, mountainous areas in some places below 20 degrees C, in the North Central region commonly 21 - 24 degrees C.
Hanoi area in the afternoon and night of May 3rd has rain, moderate rain and scattered thunderstorms, locally heavy to very heavy rain; the weather turns cool. The lowest temperature in this cold air wave is commonly 21 - 23 degrees C.
Regarding rain developments, on the day and night of May 3rd, the Northern region and Thanh Hoa will have rain, moderate rain and scattered thunderstorms with rainfall of 20 - 40mm, locally heavy to very heavy rain over 90mm.
From the afternoon of May 3rd to the morning of May 4th, the area from Nghe An to Hue City will have scattered showers and thunderstorms with rainfall of 10 - 30mm, locally heavy rain over 50mm.
The meteorological agency warns that during thunderstorms, there is a high possibility of thunderstorms, hail and strong gusts of wind.
Rainstorms accompanied by tornadoes, lightning, hail and strong gusts of wind affect agricultural production, causing trees to fall, houses, traffic works, and infrastructure to be damaged. Localized heavy rains are likely to cause flash floods on small rivers and streams, landslides on slopes, and flooding in low-lying areas.
At sea, from the evening and night of May 3rd, in the north of the Gulf of Tonkin, the northeast wind turns strong at level 5, sometimes level 6, gusting at level 7, sea waves are 1.5 - 2.5m high, rough seas. From near dawn on May 4th, the northeast sea area of the northern east sea has strong northeast wind at level 6, gusting at level 7 - 8, sea waves are 2 - 3m high, rough seas.
Strong winds and big waves at sea are likely to affect the operation of ships and boats.
