Meteorological expert explains the phenomenon of hot day, cold night

Expected to be very cold, it will last for a few more days, until December 13 and 14, the temperature will increase, the temperature difference will decrease.

From December 2, a strong cold wave began to appear and intensified in many northern mountainous areas. The Northern region has a common temperature of 5 - 8 degrees C in the high mountains, some places go below 3 degrees C, many places have icy and hoarfrost. Not only affecting the Northern region, this cold air also strongly affects the Central region, Central Highlands and the South.

It is forecasted that the cold spell will continue until December 14.

Typically in Ky Son district (Nghe An), the temperature at night to dawn the days down very low, ranging from 0 to 5 degrees Celsius, causing frost to form, covering trees and flowers. color, affecting the lives of people. In the high mountainous region of the Northwest, the temperature also drops from 5 to 8 degrees Celsius, in some places below 3 degrees Celsius, frost and frost appear.

Mr. Tran Quang Nang, Head of Weather Forecasting, Center for Hydrometeorological Forecasting, said : "This is a very cold cold spell and lasts for many days. It is expected that this cold spell will continue. lasting for three or four more days, by December 13-14, the temperature gradually increases, humid air is blowing in, the air is less dry, the freezing feeling fades, every day and night it increases by 2-3 degrees C ".

Explaining the temperature between day and night there is a big difference, the meteorologist said, essentially this cold air is dry and cold, so it will be clear clouds. At night, due to its cloudy nature, the temperature is not kept and released from the surface to the atmosphere, causing the temperature to drop sharply.

Meanwhile, the daytime is less cloudy, sunny, so the temperature increases rapidly, there are areas where the temperature increases from 10 to 15 degrees Celsius at night, creating a temperature difference between day and night during the days. by.

Mr. Tran Quang Nang also said that, in the next 10 days, the cold air will weaken, the weather will get warmer. After that, it is forecasted that at the end of December and early January 2020, there will be a new strong cold air, with a thicker frequency, on average every 3-5 days of an increase of cold air.