low pressure grooves

The appearance of a hot, moist mass in the sea, the polar cold air mass and the low pressure groove turn Grayson into a battle

Due to the influence of low pressure ditches combined with high wind convergence, the Northern provinces, especially Hanoi, continue to have widespread rainfall.

Forecasting on May 14-15, in the North and North Central, there is a possibility of moderate rain and heavy rain on a large scale.

Hanoi from tomorrow night the cold weather with the lowest temperature popular 16-18 degrees C. Northern mountain region temperature from 13-16 degrees C, high mountains below 10