According to the National Center for Hydro-Meteorological Forecasting, this morning (September 28), cold air has affected most of the Northeast.
On April 28, this cold air mass will continue to affect other places in the Northeast, then affect the North Central region, some places in the Northwest. On land, the northeast wind is level 2 - 3, coastal areas are level 3.
The Northeast is cool, some mountainous areas of the North are cold. The Hanoi area is cool.
Day and night of April 28, the North will have the lowest temperature of about 20 - 23 degrees Celsius, in high mountainous areas it will be below 18 degrees Celsius. The average temperature is about 23 - 25 degrees Celsius. In the Northwest region, it will be 24 - 26 degrees Celsius.
The North Central region has the lowest temperature of about 22 - 25 degrees Celsius; the average temperature is about 24 - 26 degrees Celsius.
Regarding another notable situation, due to the influence of cold air compressing the low pressure trough, on April 28, the Northeast region will have rain, moderate rain and thunderstorms, locally heavy to very heavy rain; the rain will gradually decrease at night.
Day and night on April 28, the Northwest and North Central regions will have scattered showers and thunderstorms, with some places having heavy rain. During thunderstorms, there is a possibility of tornadoes, lightning, hail and strong gusts of wind.
At sea, on April 28, the Gulf of Tonkin has strong northeast winds of level 4 - 5, sometimes level 6, gusting to level 7. Rough seas; Waves 1.5 - 2.5m high.