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According to the Central Meteorological Observatory, the strong cold air will affect the central and eastern regions of China from the 22nd to the 26th. Most areas will cool down by 6~10°C, and some areas in the northeast, north China and Inner Mongolia will cool down by 12~14°C, accompanied by 4-6. The northerly wind. From the night of the 23rd to the early morning of the 24th, the Hanshui, Jianghuai, and Jiangnan areas were changed from rain to sleet or snow. The southeastern part of the northwestern region, Hanshui, and the northern and western parts of the south of the Yangtze River have small to medium snow, and there is heavy snow in the local area. The amount of snowfall is 5 to 10 mm). Affected by cooling and precipitation, the temperature in the south will be the lowest at night on the 25th, and the lowest temperature in most parts of the south of the Yangtze River is generally 0 to minus 3 °C.
Although the intensity of the cooling in the southern region and the intensity of rain and snow are not as good as those from the 10th to the 16th, the rain and snow weather will still have adverse effects on transportation, electricity, agriculture and animal husbandry, etc. The relevant regions and departments need to take precautions. .
The cold air will affect most of China's need to prevent adverse effects on agricultural and livestock production
(1) From the 22nd to the 26th, there will be strong winds and cool weather in the central and eastern regions of China
It is expected that another strong cold air from 22nd to 26th will affect the central and eastern regions of China, accompanied by a northerly wind of 4-6. The temperature in most areas is 6-10 °C, and the temperature drop in the eastern part of Inner Mongolia, the eastern and northern parts of North China, and the north-central part of Northeast China is 12-14 °C, and the local area is 16 °C (Fig. 1). From the 23rd to the 25th, due to the influence of cold air, there will be strong winds of 7 to 9 in the eastern and southern sea areas. The Central Meteorological Observatory will issue a cold wave blue warning at 18 o'clock today.
The temperature in the south will be the lowest on the night of the 25th. The temperature zero line will be pressed to the south of the south of the Yangtze River. The lowest temperature in the Jianghuai area is minus 3 °C to minus 4 °C. The lowest temperature in most parts of the Yangtze River is generally between 0 °C and minus 3 °C. The lowest temperature in northern China is 2 to 4 °C, and the lowest in southern China. The temperature is 5 to 9 °C.
(2) Small to moderate rains (snow) will occur in the eastern and southern parts of the northwestern region, and heavy rains (snow) in the eastern part of the south and southwestern regions
From the 23rd to the 26th, there were small to moderate rains (snow) in the eastern part of the northwestern part of China, the eastern part of the Qinghai-Tibet Plateau, the Shandong Peninsula, the Jianghuai, Hanshui, Jiangnan, South China and the southwestern part of the country, and there was heavy rain in the eastern part of the south of the Yangtze River and the southwestern part of the country. The cumulative precipitation in the eastern part of the southwestern region, the south of the Yangtze River, and the south of China is 10 to 20 mm, with parts ranging from 25 to 30 mm in the western part of the south of the Yangtze River and northwestern part of South China (Fig. 2). From the night of the 23rd to the early morning of the 24th, there were rains and sleet or snow in Hanshui, Jianghuai and Jiangnan. There were small to medium snow in the southeastern part of the northwest, Hanshui and the north and west of the south of the Yangtze River. There was heavy snow and snowfall in the local area. The amount is 5-10 mm; after the snowfall process, the added snow depth is 3-8 cm.
During the period, the snowfall in the northern part of Xinjiang, the eastern part of the northwestern part, the northeastern part of Inner Mongolia, and the north-central part of the northeastern part of the country is 1 to 5 mm. The amount of local snowfall in the southeastern part of the northwestern region is 5 to 10 mm. In the northwestern part of Xinjiang and parts of the northern part of Heilongjiang. 10 to 15 mm; after the snowfall process, the added snow depth is 5 to 15 cm.
(3) There is no obvious precipitation in the meteorological arid areas such as central and southern China and Huanghuai, and the drought continues
Recently, there is no obvious precipitation in the meteorological arid areas such as the central and southern parts of North China and Huanghuai, and the drought will continue. Around the 24th, parts of the southeastern part of the northwestern region were small to moderately rainy (snow), and there was heavy snow in the local area, which had a certain effect on easing the local drought.
According to the analysis of meteorological experts, the cooling intensity and the intensity of rain and snow in this cold air process are less than the strong cooling, rain and snow weather from 10 to 16 days. Among them, the cooling range in the northern region is 12 to 14 °C, which is equivalent to the previous process, but the cooling rate in the southern region is weaker than the previous one. After the cold air, the southern zero temperature line is located in the south of the south of the Yangtze River, north of the previous process. The rain and snow range of this process is slightly souther than the previous one. Huanghuai basically has no precipitation, and the overall intensity of precipitation is weak. It is mainly moderate to moderate rain (snow) and local heavy rain (snow).
Concerns and Suggestions
First, the transportation, power, communications and health departments need to strengthen the prevention of adverse effects of low temperature rain and snow. During rain and snow, the visibility is low, the road is slippery, and some areas will be frozen. Relevant departments need to strengthen traffic safety management, timely clear snow and ice accretion on highways, airports, bridges, etc. The power and communication departments also need to strengthen. The inspection and maintenance of power supply lines and communication facilities; low temperature weather may lead to high incidence of colds, cardiovascular and respiratory diseases, and the health department needs to prepare for emergency work in advance.
Second, the southern region needs to strengthen field management to prevent waterlogging and freezing damage. In the short period of time, there are two consecutive rain and snow weather in the southern region. In some areas, soil over-wetting may continue or increase. Relevant localities need to take timely measures to prevent winter wheat, rapeseed, open field vegetables and fruit trees from being damaged by waterlogging; greenhouse greenhouses need to be done. Good insulation and warming work, and timely clear snow and ice.
Third, the northwest, north China, northeast and Inner Mongolia should strengthen the prevention of adverse effects of strong winds and low temperature snowfall. The pastoral area needs to do the livestock breeding, cold protection and warm shelter and windproof reinforcement work; the facility agriculture needs to do the windproof reinforcement, warmth and snow removal of the greenhouse.
Fourth, the drought in the dry areas such as Huanghuai in North China will continue, and the winter wheat area needs to strengthen field management. In the arid regions such as North China and Huanghuai, there is still no obvious precipitation, and the drought will continue. The winter wheat area should take measures such as suppression, fertilization and cover to protect the drought and freeze, so as to ensure the winter wheat safely.
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