Floods have swept through several northern mountainous provinces in the last two days
Flash floods triggered by the storm have become destructive in northern mountainous provinces
The northern port city of Hai Phong is forecast to be the center of the storm
The storm is forecast to make landfall at the Vietnam-China border areas before weakening into a depression
Strong winds and rogue waves will affect Vietnam's coastal areas
The first typhoon of the year to hit China is expected to make landfall on or near the southern island...