By tonight, the cold front is going to strongly operate and impact to the south part of the central region.
Because of its influence, the northeast monsoon is expected to blow level 3-5.
The lowest temperature in the Red Delta region will drop down 9-12 degrees Celsius, even at 5-9 degrees Celsius in the mountainous areas at the mid-night or the early morning.
Frost and hoarfrost are expected to appear in the country's highest peak.
Meanwhile, the mid- central provinces see medium- heavy rains.
The east- northern and Hanoi capital is forecast to experience fog without rain, the northeast wind of level 3-5, air humidity of 45- 92 percent.
The provinces from Thanh Hoa to Thua Thien- Hue, from Da Nang to Binh Thuan, the central highlands and the southern region suffer rainy weather and high air humidity.
