The majority of northern Vietnam and many locales in central areas were under the effects of an extreme cold front on Friday morning, with mercury dropping to 11 degrees Celsius in Hanoi and below zero in some mountainous areas.
The northeast monsoon wind of level 6-8 and rough seas were recorded in the Gulf of Tonkin in northern Vietnam on Friday morning, said the National Center for Hydro-Meteorological Forecasting.
Northern monsoons also rumbled the waters of central and southern Vietnam, as well as the northern and central areas of the East Vietnam Sea, the center added.
The cold gusts of northeast wind are expected to stick around and spread their impact further down the central areas.
Due to its influence, the area saw rain, with several locales bracing for high precipitation on Friday.
In the meantime, the northern and north-central areas faced intense cold snaps, with the lowest temperature projected to be around 7-10 degrees Celsius, or even below zero at several highland spots, with chances of snowfall and frost to ensue.
Mercury at Ha Dong Weather Station in Hanoi plummeted to 11 degrees Celsius, while Mount Mau Son in the northern province of Lang Son saw -1,4 degrees Celsius.
Hanoi saw no rain, but faced severe cold with the lowest temperature fluctuating around 8-10 degrees Celsius.
The central provinces from Quang Binh to Quang Ngai also encountered cold weather, with temperatures hovering around 13-17 degrees Celsius.
The Central Highlands areas also saw cold, while the south-central and southern provinces will experience mild cold weather during the night and early morning, starting Saturday.