According to the National Center for Hydro-Meteorological Forecasting, in the afternoon of April 28, the cold air mass has reported that it is still compressing and pushing a low pressure trough with its axis at about 23-25 degrees North latitude moving southward. In the North, there are showers and thunderstorms in some places, the common temperature is 30-33 degrees C.
It is forecasted that around the night of April 28, this cold air mass will affect the Northeast region, then affect the North Central region, some places in the Northwest and Central Central regions.On land, the wind will shift to Northeast level 2-3, coastal areas level 3-4.
In the Northeast and North Central regions, the weather will turn cool.The lowest temperature in this cold air mass in the Northeast region is commonly from 20-23 degrees C, mountainous areas have places below 20 degrees C, in the North Central region it is commonly 22-25 degrees C.
Hanoi weather from the evening of April 28 to the morning of April 29 with showers and scattered thunderstorms, locally heavy rain; the weather turns cool. The lowest temperature in this cold air wave is commonly 21-23 degrees C.

From the evening of April 28 to the morning of April 29, in the North, there will be rain, moderate rain and scattered thunderstorms, locally heavy to very heavy rain.
Rainstorms are accompanied by tornadoes, lightning, hail and strong gusts of wind. Therefore, people and tourists in Hanoi participating in the art program "Echoes of the Fatherland", watching fireworks, pay attention to bringing umbrellas and raincoats when going out, to prevent sudden weather changes.