The cold front is coming again! Will it have an overlapping impact with the cold wave at the beginning of the month? Here comes the authoritative interpretation!

November 19-22

A strong cold front will move from west to east

Affects most of my country

What are the characteristics of this process?

Is there any overlapping impact with the cold wave at the beginning of this month?

Which areas need special attention?

Yang Shunan, chief forecaster of the Central Meteorological Observatory

This was interpreted

The cooling range is wide and the cold air has a quick impact. The lowest temperature is low.

This process is characterized by a wide impact range and low minimum temperature.

The cold air will mainly affect northern Xinjiang on the 19th;

On the 20th, the cold air will advance eastward, and strong winds and cooling will occur in the central and eastern parts of the Northwest and western Inner Mongolia.

The strongest impact period of the process will be from the 21st to the 22nd, when the cold air will move southward to most areas of central and eastern China.

Affected by this, the temperature in most areas will drop by 6℃ to 10℃, and above 12℃ in some local areas. The 0℃ line of the lowest temperature will be significantly moved southward to the middle and lower reaches of the Yangtze River and the northern part of the Sichuan Basin.

The minimum temperature will drop significantly during this process. The temperature in high-altitude mountainous areas in Jiangsu, Anhui, central and southern Zhejiang, northern Jiangxi, and northern Fujian will drop below 0°C. Most areas in the Huanghuai and south of it will also be accompanied by light to moderate rain, with heavy rain in some areas.

Experts suggest that in cold and wet conditions, the public will feel a lower temperature and need to pay attention to keeping warm.

Combined with the previous process, the strong wind and snowfall in the north are obvious

Affected by the cold air, while the temperature drops, most areas in the north will experience northerly winds of 4 to 6, with some gusts of 7 to 9. In addition, the eastern and southern seas of my country will experience strong winds of 7 to 9, with gusts of 10. Coastal areas in Shandong, Jiangsu, Zhejiang, Fujian and other places need to guard against the adverse effects of strong winds on maritime transportation and operations.

Experts pointed out that the impact of previous snowfall cannot be ignored. The snowfall area in Heilongjiang this time is more eastward than the last time, and the snowfall intensity is larger in some areas, with the new snow accumulation of 5 to 10 mm, and 15 to 20 mm in some places. It is expected that the local accumulated snowfall in the northeast will be around 30 mm. Attention should be paid to the adverse effects of slippery roads, snow and ice on transportation.

The intensity is not as strong as the cold wave at the beginning of the month, but we still need to guard against strong winds and cooling.

Compared with the extreme cold wave at the beginning of this month, the impact range of this process is basically similar, but the temperature drop, wind speed, and rain and snow intensity are significantly weaker.

Experts explained that this is because the Siberian High Pressure and the southwest warm and humid air flow are weaker than last time, and the mid-level circulation is straight and the water vapor conditions are poor, resulting in a wide range of precipitation but weak intensity, mainly light to moderate rain.

Although the intensity is not as strong as last time, the strong wind and cooling will still have an adverse impact on epidemic prevention and control, urban operations and agriculture and animal husbandry. Experts suggest that greenhouses, livestock pens and temporary structures should be reinforced in advance to prevent wind and strengthen respiratory disease prevention and health and epidemic prevention work.

Produced by China Meteorological News Agency

Author: Wu Tong

Editor: Shua Ke Yan Xin

Review: Duan Haoshu and Su Yujun