Bordering China, Lang Son Province is the first area in northern Vietnam to receive cold air outbreaks, and often experiences them most intensely. Early this morning, ice appeared and clung thickly to walls at elevations of nearly 1,200 meters.

Steel wire fences were coated in a thick layer of white ice.

The National Center for Hydro-Meteorological Forecasting recorded a temperature of 0.2 C at the monitoring station on Mau Son summit, the lowest in the country. By midday, thermometers at some lodging facilities showed temperatures around 3 C.

Low temperatures, light rain, and dense fog created favorable conditions for ice to form from about 100 meters below the summit downward.

As of 2 p.m., ice still heavily covered tree branches at the mountain peak.

Nguyen Van Huong, head of weather forecasting at the National Center for Hydro-Meteorological Forecasting, said this cold spell has pushed temperatures in mountainous areas down to 6-9 C and 10-12 C in the lowlands, and feels colder than during the Jan. 5-8 cold snap.

He explained that the early January cold spell was a dry cold, with little cloud cover, causing temperatures to drop sharply at night but rise noticeably during sunny days.

Lang Son Province is the first area in northern Vietnam to receive cold air outbreaks.

The current cold spell, however, is a humid cold, with heavy cloud cover keeping temperatures low both day and night. As a result, average daily temperatures are lower, making the cold feel harsher and more prolonged.

According to the National Center for Hydro-Meteorological Forecasting, the severe cold affecting northern Vietnam will last through Friday.

Minimum temperatures are expected to range from 10-12 C, with mountainous areas at 6-9 C and some high-altitude locations dropping below 3 degrees. High mountain regions are advised to be alert for frost and possible snowfall.

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