Two recent cold air effects, temperature fluctuations and weak precipitation

The Central Meteorological Observatory predicts that two cold air will affect China in the next few days, and the central and eastern regions will once again experience rain and snow cooling. In addition, there will be two weak precipitation processes in the meteorological arid regions of the north, and the meteorological department is closely monitoring the weather trends and preparing for artificially increasing rain and snow.

Two cold air activities in the eastern part of the eastern rain and snow cooling temperature fluctuations

Yesterday (11th), with the cold air away, the national rain and snow range was not large, and the temperature in the central and southern parts of North China continued to rise slightly in the northern part of the Yangtze River. At 14 o'clock yesterday, compared with 14 o'clock the day before yesterday, there was a general rise of 2-6 °C. The southwestern part of the southwest, the south of the south of the Yangtze River, and the south of China continue to be affected by the cold air, which generally cools down. Especially in central Guangxi, central Guangdong, and southern part of Fujian, the temperature is “diving”, and the temperature drop is generally 10-16 °C. The cooling has made many people unable to adapt.

Starting today, affected by a new weak cold air, rain and snow will cool down in most parts of the central and eastern regions. The Central Meteorological Observatory predicts that on the 12th to 13th, the new weak cold air will affect the eastern, northern China, Huanghuai, Jianghuai, Jiangnan and South China regions of the northwestern region. The above areas will cool down by 3-6 °C, accompanied by 4-5 winds. At the same time, there will be a relatively obvious precipitation process in the southeastern part of the northwest, the southwestern part of the southwest, the central and western parts of the south of the Yangtze River, and southern China.

National Precipitation Forecast Chart (08:00 on the 12th to 08:00 on the 13th)

Among them, today's western Xinjiang, western Tibet, eastern northwestern region, central Inner Mongolia, northeastern central and eastern China, North China, Huanghuai West, Jianghan, Jianghuai, Jiangnan, southwestern China, South China, Taiwan and other places have small to medium snow (rain) or There is heavy snow in the northeastern part of Guizhou and northern part of Hunan; there is freezing rain in the mountainous areas of central Guizhou and western Hunan. There are 4 to 5 northerly winds in the central and western Inner Mongolia, Ningxia, and Northeast China.

After the end of the process, from 16th to 17th, another cold air will affect the central and eastern regions of China. There are 4-6 northerly winds north of the Huaihe River in the Qinling Mountains, and the temperature drops by 4-8°C. The eastern and northeastern parts of Inner Mongolia The regional temperature dropped by 10 °C; there were 1-3 mm of snowfall in the northeastern part of Inner Mongolia and the north and east of the northeastern part.

Since February, temperatures in most parts of China have continued to rise. In early February, most of the temperatures were mainly high, and the temperature was generally high 1-4 °C. In the middle of the year, due to the frequent influence of cold air, the high situation in the central and eastern parts will gradually reverse, and the temperature in Jiangnan and South China will be slightly lower. Experts remind that the recent temperature fluctuations are large, everyone should pay attention to doing warm work to avoid the occurrence of diseases such as colds.

The northern meteorological arid zone will welcome two weak precipitation processes

For the meteorological arid regions in the north, there will be weak precipitation from the 12th to the 13th and the 15th to the 16th. Among them, the cumulative precipitation in northern Hebei and Henan is 0~2 mm, and there are in Shanxi, Shandong and southern Henan. 1 to 3 millimeters of precipitation, 2 to 5 millimeters north of Susie. At present, the meteorological department is closely monitoring the weather trends and preparing for artificially increasing rain and snow.

Due to the frequent cold air, it will have an adverse impact on agricultural production. Agricultural experts suggest that first, we must pay close attention to weather changes and scientifically organize spring irrigation. It is estimated that from November 11 to 13, the average daily temperature in the winter wheat area north of the Huaihe River will fall below 3 °C, and the winter wheat and arid areas are not suitable for irrigation. In areas where the drought has not been effectively alleviated, it is necessary to wait until the average daily temperature rises to 3 °C before spraying or small water to ensure that the irrigation water can be completely infiltrated on the same day. Avoid flooding with large water to prevent the surface from freezing and freezing the wheat. .

The second is to do a good job in the field management of the returning green period according to the conditions of the seedlings and the public opinion. Winter wheat in the north will gradually enter the greening period, and all localities should do a good job in the preparation of wheat field management. For small or late-worn wheat fields, it is necessary to trace the returning green fertilizer while pouring the green water; in areas without irrigation conditions, measures such as rowing should be taken to protect the roots and promote the roots.