Affected by the strong cold air that continues to move eastward and southward, in the next three days, the north and lower reaches of the Yangtze River and its north area will have 4~6 northerly winds; the precipitation in the central and eastern regions will increase and increase, and some areas in the Jianghuai and Jiangnan areas will have Heavy rains; temperatures in the northwestern region, the southwestern region, the south of the Yangtze River, and southern China have plummeted, with a local drop of 6-12 °C. The weather is hot and cold, and the weather is warm and cold. Everyone needs to pay attention to the cold and keep warm.
Yesterday (21st), from 5 o'clock to 5 o'clock, snowfall (rain) or sleet 3~7 mm in the eastern part of Shaanxi, southwestern Shandong, southern Shandong, etc., local precipitation of 12~28 mm; southwest of Shanxi, Rainfall in most parts of Henan, northern Susong, southwestern and northeastern Hubei, northern Chongqing, northern Hunan, northeastern Guangxi and other places is 20~45 mm, and central Henan is 50~74 mm. Yesterday night, there were dust or sandstorms in the southern Xinjiang Basin and northern Qinghai.
Yesterday, the temperature rise and cooling in many areas of China were relatively large. The cooling range is mainly concentrated in the central and western regions, including most of Gansu, Qinghai, Shaanxi, Shanxi, and Henan, Chongqing, and eastern Sichuan. The cooling range is above 6 °C, and the local area is over 10 °C. Like Golmud and Dulan in Qinghai, the temperature is only 4 °C at 14 o'clock after cooling, which is 14 °C and 12 °C, respectively, compared with the previous day.
In the eastern part of Inner Mongolia, the northeastern part of China, the eastern part of Huanghuai, the Jianghuai area and most of the southern part of the Yangtze River, the temperature has shown a rising trend due to the cold air has not yet arrived. Among them, most of the northeast and the middle and lower reaches of the Yangtze River, the temperature rose back to 5 to 10 °C at 14:00. For example, Harbin's 14°C reached 6°C, which was 7°C higher than the previous day, which is the highest temperature since this year (5.5°C on March 15).
As the cold air moves eastward and southward, today, the precipitation in the central and eastern regions will increase. There is a large amount of rainfall in the south of southern China to southern China, especially in parts of the Jianghuai, eastern Hubei, northern and western parts of the Yangtze River, and northeastern Guangxi. There were heavy rains (50-60 mm) in the central and southern parts of eastern Yunnan and eastern Hubei. Areas with heavy rains need to be alert to strong convective weather such as short-term heavy rainfall and thunderstorms. In addition, there will be small to medium snow or sleet in the central and eastern parts of Inner Mongolia, the north-central and western parts of North China, and the eastern part of Heilongjiang. 
At the same time, most of Inner Mongolia, the northwestern part of the northwest, the north of the northeast, and the northeastern part of the country have 5 to 6 winds. Some areas in Xinjiang's southern Xinjiang basin, central and western Inner Mongolia, western Gansu, northern Ningxia, and northwestern Qinghai have sand. Or floating dust, there is a sandstorm on the ground. There are 5 to 7 northerly winds in the eastern sea area.
Tomorrow, there are small to medium snow or sleet in eastern Tibet, western Sichuan Plateau, eastern Inner Mongolia, northeastern Hebei, and most of the northeastern regions. Among them, there is heavy snow (5-8 mm) in the eastern part of Jilin. Some areas in southern Sichuan, northern and eastern Yunnan, Guizhou, Jiangnan, and southern China have moderate to moderate rainfall. There are 4 to 5 northerly winds in the central and eastern parts of Inner Mongolia and the western part of the northeastern part of China.
On the 24th, as the cold air gradually moved away, precipitation in most parts of the central and eastern regions tends to end. There are only small to medium snow in the northeastern region; there are light rains in southern Sichuan, western Guizhou, and eastern Yunnan.
Experts suggest that there will be rain and snow in North China, Huanghuai and other places, which will help the soil moisture increase, which is beneficial to the growth of wheat. Some areas in the south may have strong convective weather such as short-term heavy rainfall and thunderstorms. Please take precautions. In addition, the wind in the cold air process is relatively large, and the vessels on the rivers and lakes should pay attention to returning to the harbor in a timely manner to avoid accidents.
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