According to the National Center for Hydro-Meteorological Forecasting, the cold air is forecast to affect the weather in the North in the next 24 to 48 hours.
On land in the early morning and morning of April 28, this cold air mass will affect the Northeast region, then gradually spread to the North Central region, some places in the Northwest and Central Central regions.

On land, the wind will shift to the Northeast level 23, coastal areas level 3.
On April 28, the Northeast and North Central regions will turn cool; some mountainous areas in the North will be cold. The lowest temperature is generally from 2023°C, in high mountainous areas it is below 18°C.
Hanoi weather forecast for April 28, the weather turns cool. The lowest temperature in this cold air mass is generally from 2123°C.
On April 28, in the Gulf of Tonkin, the Northeast monsoon will be strong at level 45, sometimes at level 6, gusting to level 7. Rough seas; Waves 1.52.5m high.
Due to the influence of cold air compressing the low pressure trough, from the evening of April 27 to April 28, in the Northeast region, there will be rain, moderate rain and thunderstorms, locally heavy to very heavy rain.
The Northwest, North and Central Central regions will have rain, showers and scattered thunderstorms, with some places having heavy rain.
People and tourists should be on guard during thunderstorms that are likely to be accompanied by dangerous weather phenomena such as tornadoes, lightning, hail, strong gusts of wind, broken trees, damage to houses, traffic works and infrastructure.